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| author | Sanjoy Das <sanjoy@playingwithpointers.com> | 2015-10-16 02:41:00 +0000 |
|---|---|---|
| committer | Sanjoy Das <sanjoy@playingwithpointers.com> | 2015-10-16 02:41:00 +0000 |
| commit | 25ec1a3e6046fa4a2dcf24dbf4a09c7827368c32 (patch) | |
| tree | 3a441e8bfb2db236c2f4f4ce68c1dd45f76caae0 /llvm/test/Transforms/RewriteStatepointsForGC | |
| parent | a51c4077c553c8703832e56ba763428334af8150 (diff) | |
| download | bcm5719-llvm-25ec1a3e6046fa4a2dcf24dbf4a09c7827368c32.tar.gz bcm5719-llvm-25ec1a3e6046fa4a2dcf24dbf4a09c7827368c32.zip | |
[RS4GC] Use "deopt" operand bundles
Summary:
This is a step towards using operand bundles to carry deopt state till
RewriteStatepointsForGC. The change adds a flag to
RewriteStatepointsForGC that teaches it to pick up deopt state from a
`"deopt"` operand bundle attached to the `call` or `invoke` it is
wrapping.
The command line flag added, `-rs4gc-use-deopt-bundles`, will only exist
for a short while. Once we are able to pipe deopt bundle state through
the full optimization pipeline without problems, we will "constant fold"
`-rs4gc-use-deopt-bundles` to `true`.
Reviewers: swaroop.sridhar, reames
Subscribers: llvm-commits, sanjoy
Differential Revision: http://reviews.llvm.org/D13372
llvm-svn: 250489
Diffstat (limited to 'llvm/test/Transforms/RewriteStatepointsForGC')
25 files changed, 1872 insertions, 0 deletions
diff --git a/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/base-pointers-1.ll b/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/base-pointers-1.ll new file mode 100644 index 00000000000..6af2a3012b5 --- /dev/null +++ b/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/base-pointers-1.ll @@ -0,0 +1,25 @@ +; RUN: opt %s -rewrite-statepoints-for-gc -rs4gc-use-deopt-bundles -spp-print-base-pointers -S 2>&1 | FileCheck %s + +; CHECK: derived %merged_value base %merged_value.base + +declare void @site_for_call_safpeoint() + +define i64 addrspace(1)* @test(i64 addrspace(1)* %base_obj_x, i64 addrspace(1)* %base_obj_y, i1 %runtime_condition) gc "statepoint-example" { +entry: + br i1 %runtime_condition, label %here, label %there + +here: ; preds = %entry + %x = getelementptr i64, i64 addrspace(1)* %base_obj_x, i32 1 + br label %merge + +there: ; preds = %entry + %y = getelementptr i64, i64 addrspace(1)* %base_obj_y, i32 1 + br label %merge + +merge: ; preds = %there, %here +; CHECK-LABEL: merge: +; CHECK: %merged_value.base = phi i64 addrspace(1)* [ %base_obj_x, %here ], [ %base_obj_y, %there ] + %merged_value = phi i64 addrspace(1)* [ %x, %here ], [ %y, %there ] + call void @site_for_call_safpeoint() [ "deopt"(i32 0, i32 -1, i32 0, i32 0, i32 0) ] + ret i64 addrspace(1)* %merged_value +} diff --git a/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/base-pointers-10.ll b/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/base-pointers-10.ll new file mode 100644 index 00000000000..8c486d6b389 --- /dev/null +++ b/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/base-pointers-10.ll @@ -0,0 +1,35 @@ +; RUN: opt %s -rewrite-statepoints-for-gc -rs4gc-use-deopt-bundles -spp-print-base-pointers -S 2>&1 | FileCheck %s + + +declare i1 @runtime_value() "gc-leaf-function" + +declare void @do_safepoint() + +define void @select_of_phi(i64 addrspace(1)* %base_obj_x, i64 addrspace(1)* %base_obj_y) gc "statepoint-example" { +entry: + br label %loop + +loop: ; preds = %merge, %entry + %current_x = phi i64 addrspace(1)* [ %base_obj_x, %entry ], [ %next_x, %merge ] + %current_y = phi i64 addrspace(1)* [ %base_obj_y, %entry ], [ %next_y, %merge ] + %current = phi i64 addrspace(1)* [ null, %entry ], [ %next, %merge ] + %condition = call i1 @runtime_value() + %next_x = getelementptr i64, i64 addrspace(1)* %current_x, i32 1 + %next_y = getelementptr i64, i64 addrspace(1)* %current_y, i32 1 + br i1 %condition, label %true, label %false + +true: ; preds = %loop + br label %merge + +false: ; preds = %loop + br label %merge + +merge: ; preds = %false, %true + %next = phi i64 addrspace(1)* [ %next_x, %true ], [ %next_y, %false ] + call void @do_safepoint() [ "deopt"(i32 0, i32 -1, i32 0, i32 0, i32 0) ] + br label %loop +} +; CHECK: Base Pairs (w/o Relocation): +; CHECK-DAG: derived %next base %next.base +; CHECK-DAG: derived %next_x base %base_obj_x +; CHECK-DAG: derived %next_y base %base_obj_y diff --git a/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/base-pointers-11.ll b/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/base-pointers-11.ll new file mode 100644 index 00000000000..ae793b2cb63 --- /dev/null +++ b/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/base-pointers-11.ll @@ -0,0 +1,24 @@ +; RUN: opt %s -rewrite-statepoints-for-gc -rs4gc-use-deopt-bundles -spp-print-base-pointers -S 2>&1 | FileCheck %s + +; CHECK: derived %next base %base_obj + +declare void @do_safepoint() + +define void @test(i64 addrspace(1)* %base_obj) gc "statepoint-example" { +entry: + %obj = getelementptr i64, i64 addrspace(1)* %base_obj, i32 1 + br label %loop + +loop: ; preds = %loop, %entry +; CHECK-LABEL: loop: +; CHECK: phi i64 addrspace(1)* +; CHECK-DAG: [ %base_obj.relocated.casted, %loop ] +; CHECK-DAG: [ %base_obj, %entry ] +; CHECK: %current = phi i64 addrspace(1)* +; CHECK-DAG: [ %obj, %entry ] +; CHECK-DAG: [ %next.relocated.casted, %loop ] + %current = phi i64 addrspace(1)* [ %obj, %entry ], [ %next, %loop ] + %next = getelementptr i64, i64 addrspace(1)* %current, i32 1 + call void @do_safepoint() [ "deopt"(i32 0, i32 -1, i32 0, i32 0, i32 0) ] + br label %loop +} diff --git a/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/base-pointers-2.ll b/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/base-pointers-2.ll new file mode 100644 index 00000000000..2b9485388f8 --- /dev/null +++ b/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/base-pointers-2.ll @@ -0,0 +1,19 @@ +; RUN: opt %s -rewrite-statepoints-for-gc -rs4gc-use-deopt-bundles -spp-print-base-pointers -S 2>&1 | FileCheck %s + +; CHECK: derived %merged_value base %base_obj + +define i64 addrspace(1)* @test(i64 addrspace(1)* %base_obj, i1 %runtime_condition) gc "statepoint-example" { +entry: + br i1 %runtime_condition, label %merge, label %there + +there: ; preds = %entry + %derived_obj = getelementptr i64, i64 addrspace(1)* %base_obj, i32 1 + br label %merge + +merge: ; preds = %there, %entry + %merged_value = phi i64 addrspace(1)* [ %base_obj, %entry ], [ %derived_obj, %there ] + call void @foo() [ "deopt"(i32 0, i32 -1, i32 0, i32 0, i32 0) ] + ret i64 addrspace(1)* %merged_value +} + +declare void @foo() diff --git a/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/base-pointers-3.ll b/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/base-pointers-3.ll new file mode 100644 index 00000000000..71bb309d130 --- /dev/null +++ b/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/base-pointers-3.ll @@ -0,0 +1,19 @@ +; RUN: opt %s -rewrite-statepoints-for-gc -rs4gc-use-deopt-bundles -spp-print-base-pointers -S 2>&1 | FileCheck %s + +; CHECK: derived %next.i64 base %base_obj + +define void @test(i64 addrspace(1)* %base_obj) gc "statepoint-example" { +entry: + %obj = getelementptr i64, i64 addrspace(1)* %base_obj, i32 1 + br label %loop + +loop: ; preds = %loop, %entry + %current = phi i64 addrspace(1)* [ %obj, %entry ], [ %next.i64, %loop ] + %current.i32 = bitcast i64 addrspace(1)* %current to i32 addrspace(1)* + %next.i32 = getelementptr i32, i32 addrspace(1)* %current.i32, i32 1 + %next.i64 = bitcast i32 addrspace(1)* %next.i32 to i64 addrspace(1)* + call void @do_safepoint() [ "deopt"(i32 0, i32 -1, i32 0, i32 0, i32 0) ] + br label %loop +} + +declare void @do_safepoint() diff --git a/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/base-pointers-4.ll b/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/base-pointers-4.ll new file mode 100644 index 00000000000..2d5c9f520fc --- /dev/null +++ b/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/base-pointers-4.ll @@ -0,0 +1,44 @@ +; RUN: opt %s -rewrite-statepoints-for-gc -rs4gc-use-deopt-bundles -spp-print-base-pointers -S 2>&1 | FileCheck %s + +; CHECK: derived %obj_to_consume base %obj_to_consume + +declare void @foo() + +declare i64 addrspace(1)* @generate_obj() + +declare void @consume_obj(i64 addrspace(1)*) + +define void @test(i32 %condition) gc "statepoint-example" { +entry: + br label %loop + +loop: ; preds = %merge.split, %entry +; CHECK: loop: +; CHECK: [[TOKEN_0:%[^ ]+]] = call i32 (i64, i32, i64 addrspace(1)* ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_p1i64f(i64 2882400000, i32 0, i64 addrspace(1)* ()* @generate_obj, i32 0, i32 0, i32 0, i32 5, i32 0, i32 -1, i32 0, i32 0, i3 +; CHECK-NEXT: [[RESULT_0:%[^ ]+]] = call i64 addrspace(1)* @llvm.experimental.gc.result + %0 = call i64 addrspace(1)* @generate_obj() [ "deopt"(i32 0, i32 -1, i32 0, i32 0, i32 0) ] + switch i32 %condition, label %dest_a [ + i32 0, label %dest_b + i32 1, label %dest_c + ] + +dest_a: ; preds = %loop + br label %merge + +dest_b: ; preds = %loop + br label %merge + +dest_c: ; preds = %loop + br label %merge + +merge: ; preds = %dest_c, %dest_b, %dest_a +; CHECK: merge: +; CHECK: %obj_to_consume = phi i64 addrspace(1)* [ [[RESULT_0]], %dest_a ], [ null, %dest_b ], [ null, %dest_c ] + %obj_to_consume = phi i64 addrspace(1)* [ %0, %dest_a ], [ null, %dest_b ], [ null, %dest_c ] + call void @consume_obj(i64 addrspace(1)* %obj_to_consume) [ "deopt"(i32 0, i32 -1, i32 0, i32 0, i32 0) ] + br label %merge.split + +merge.split: ; preds = %merge + call void @foo() [ "deopt"(i32 0, i32 -1, i32 0, i32 0, i32 0) ] + br label %loop +} diff --git a/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/base-pointers-5.ll b/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/base-pointers-5.ll new file mode 100644 index 00000000000..4d43d7f7307 --- /dev/null +++ b/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/base-pointers-5.ll @@ -0,0 +1,28 @@ +; RUN: opt %s -rewrite-statepoints-for-gc -rs4gc-use-deopt-bundles -spp-print-base-pointers -S 2>&1 | FileCheck %s + +; CHECK: derived %merged_value base %merged_value.base + +declare void @foo() + +define i64 addrspace(1)* @test(i64 addrspace(1)* %base_obj_x, i64 addrspace(1)* %base_obj_y, i1 %runtime_condition) gc "statepoint-example" { +entry: + br i1 %runtime_condition, label %here, label %there + +here: ; preds = %entry + br label %bump + +bump: ; preds = %here + br label %merge + +there: ; preds = %entry + %y = getelementptr i64, i64 addrspace(1)* %base_obj_y, i32 1 + br label %merge + +merge: ; preds = %there, %bump +; CHECK: merge: +; CHECK: %merged_value.base = phi i64 addrspace(1)* [ %base_obj_x, %bump ], [ %base_obj_y, %there ] +; CHECK-NEXT: %merged_value = phi i64 addrspace(1)* [ %base_obj_x, %bump ], [ %y, %there ] + %merged_value = phi i64 addrspace(1)* [ %base_obj_x, %bump ], [ %y, %there ] + call void @foo() [ "deopt"(i32 0, i32 -1, i32 0, i32 0, i32 0) ] + ret i64 addrspace(1)* %merged_value +} diff --git a/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/base-pointers-6.ll b/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/base-pointers-6.ll new file mode 100644 index 00000000000..2d555d179c2 --- /dev/null +++ b/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/base-pointers-6.ll @@ -0,0 +1,37 @@ +; RUN: opt %s -rewrite-statepoints-for-gc -rs4gc-use-deopt-bundles -spp-print-base-pointers -S 2>&1 | FileCheck %s + +; CHECK: derived %merged_value base %merged_value.base + +declare void @site_for_call_safpeoint() + +define i64 addrspace(1)* @test(i64 addrspace(1)* %base_obj_x, i64 addrspace(1)* %base_obj_y, i1 %runtime_condition_x, i1 %runtime_condition_y) gc "statepoint-example" { +entry: + br i1 %runtime_condition_x, label %here, label %there + +here: ; preds = %entry + br i1 %runtime_condition_y, label %bump_here_a, label %bump_here_b + +bump_here_a: ; preds = %here + %x_a = getelementptr i64, i64 addrspace(1)* %base_obj_x, i32 1 + br label %merge_here + +bump_here_b: ; preds = %here + %x_b = getelementptr i64, i64 addrspace(1)* %base_obj_x, i32 2 + br label %merge_here + +merge_here: ; preds = %bump_here_b, %bump_here_a + %x = phi i64 addrspace(1)* [ %x_a, %bump_here_a ], [ %x_b, %bump_here_b ] + br label %merge + +there: ; preds = %entry + %y = getelementptr i64, i64 addrspace(1)* %base_obj_y, i32 1 + br label %merge + +merge: ; preds = %there, %merge_here +; CHECK: merge: +; CHECK: %merged_value.base = phi i64 addrspace(1)* [ %base_obj_x, %merge_here ], [ %base_obj_y, %there ] +; CHECK-NEXT: %merged_value = phi i64 addrspace(1)* [ %x, %merge_here ], [ %y, %there ] + %merged_value = phi i64 addrspace(1)* [ %x, %merge_here ], [ %y, %there ] + call void @site_for_call_safpeoint() [ "deopt"(i32 0, i32 -1, i32 0, i32 0, i32 0) ] + ret i64 addrspace(1)* %merged_value +} diff --git a/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/base-pointers-7.ll b/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/base-pointers-7.ll new file mode 100644 index 00000000000..e90ef63184e --- /dev/null +++ b/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/base-pointers-7.ll @@ -0,0 +1,45 @@ +; RUN: opt %s -rewrite-statepoints-for-gc -rs4gc-use-deopt-bundles -spp-print-base-pointers -S 2>&1 | FileCheck %s + +; CHECK: derived %merged_value base %merged_value.base + +declare void @site_for_call_safpeoint() + +define i64 addrspace(1)* @test(i64 addrspace(1)* %base_obj_x, i64 addrspace(1)* %base_obj_y, i1 %runtime_condition_x, i1 %runtime_condition_y) gc "statepoint-example" { +entry: + br i1 %runtime_condition_x, label %here, label %there + +here: ; preds = %entry + br i1 %runtime_condition_y, label %bump_here_a, label %bump_here_b + +bump_here_a: ; preds = %here + %x_a = getelementptr i64, i64 addrspace(1)* %base_obj_x, i32 1 + br label %merge_here + +bump_here_b: ; preds = %here + %x_b = getelementptr i64, i64 addrspace(1)* %base_obj_y, i32 2 + br label %merge_here + +merge_here: ; preds = %bump_here_b, %bump_here_a +; CHECK: merge_here: +; CHECK-DAG: %x.base +; CHECK-DAG: phi i64 addrspace(1)* +; CHECK-DAG: [ %base_obj_x, %bump_here_a ] +; CHECK-DAG: [ %base_obj_y, %bump_here_b ] + %x = phi i64 addrspace(1)* [ %x_a, %bump_here_a ], [ %x_b, %bump_here_b ] + br label %merge + +there: ; preds = %entry + %y = getelementptr i64, i64 addrspace(1)* %base_obj_y, i32 1 + br label %merge + +merge: ; preds = %there, %merge_here +; CHECK: merge: +; CHECK-DAG: %merged_value.base +; CHECK-DAG: phi i64 addrspace(1)* +; CHECK-DAG: %merge_here +; CHECK-DAG: [ %base_obj_y, %there ] +; CHECK: %merged_value = phi i64 addrspace(1)* [ %x, %merge_here ], [ %y, %there ] + %merged_value = phi i64 addrspace(1)* [ %x, %merge_here ], [ %y, %there ] + call void @site_for_call_safpeoint() [ "deopt"(i32 0, i32 -1, i32 0, i32 0, i32 0) ] + ret i64 addrspace(1)* %merged_value +} diff --git a/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/base-pointers-8.ll b/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/base-pointers-8.ll new file mode 100644 index 00000000000..628696ba2c2 --- /dev/null +++ b/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/base-pointers-8.ll @@ -0,0 +1,37 @@ +; RUN: opt %s -rewrite-statepoints-for-gc -rs4gc-use-deopt-bundles -spp-print-base-pointers -S 2>&1 | FileCheck %s + +; CHECK: derived %next_element_ptr base %array_obj + +define i32 @null_in_array(i64 addrspace(1)* %array_obj) gc "statepoint-example" { +entry: + %array_len_pointer.i64 = getelementptr i64, i64 addrspace(1)* %array_obj, i32 1 + %array_len_pointer.i32 = bitcast i64 addrspace(1)* %array_len_pointer.i64 to i32 addrspace(1)* + %array_len = load i32, i32 addrspace(1)* %array_len_pointer.i32 + %array_elems = bitcast i32 addrspace(1)* %array_len_pointer.i32 to i64 addrspace(1)* addrspace(1)* + br label %loop_check + +loop_check: ; preds = %loop_back, %entry + %index = phi i32 [ 0, %entry ], [ %next_index, %loop_back ] + %current_element_ptr = phi i64 addrspace(1)* addrspace(1)* [ %array_elems, %entry ], [ %next_element_ptr, %loop_back ] + %index_lt = icmp ult i32 %index, %array_len + br i1 %index_lt, label %check_for_null, label %not_found + +check_for_null: ; preds = %loop_check + %current_element = load i64 addrspace(1)*, i64 addrspace(1)* addrspace(1)* %current_element_ptr + %is_null = icmp eq i64 addrspace(1)* %current_element, null + br i1 %is_null, label %found, label %loop_back + +loop_back: ; preds = %check_for_null + %next_element_ptr = getelementptr i64 addrspace(1)*, i64 addrspace(1)* addrspace(1)* %current_element_ptr, i32 1 + %next_index = add i32 %index, 1 + call void @do_safepoint() [ "deopt"(i32 0, i32 -1, i32 0, i32 0, i32 0) ] + br label %loop_check + +not_found: ; preds = %loop_check + ret i32 -1 + +found: ; preds = %check_for_null + ret i32 %index +} + +declare void @do_safepoint() diff --git a/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/base-pointers-9.ll b/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/base-pointers-9.ll new file mode 100644 index 00000000000..a82af3b9689 --- /dev/null +++ b/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/base-pointers-9.ll @@ -0,0 +1,20 @@ +; RUN: opt %s -rewrite-statepoints-for-gc -rs4gc-use-deopt-bundles -spp-print-base-pointers -S 2>&1 | FileCheck %s + +; CHECK: derived %next base %base_obj + +declare i1 @runtime_value() "gc-leaf-function" + +define void @maybe_GEP(i64 addrspace(1)* %base_obj) gc "statepoint-example" { +entry: + br label %loop + +loop: ; preds = %loop, %entry + %current = phi i64 addrspace(1)* [ %base_obj, %entry ], [ %next, %loop ] + %condition = call i1 @runtime_value() + %maybe_next = getelementptr i64, i64 addrspace(1)* %current, i32 1 + %next = select i1 %condition, i64 addrspace(1)* %maybe_next, i64 addrspace(1)* %current + call void @do_safepoint() [ "deopt"(i32 0, i32 -1, i32 0, i32 0, i32 0) ] + br label %loop +} + +declare void @do_safepoint() diff --git a/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/base-pointers.ll b/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/base-pointers.ll new file mode 100644 index 00000000000..a378d1502ad --- /dev/null +++ b/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/base-pointers.ll @@ -0,0 +1,151 @@ +; RUN: opt %s -rewrite-statepoints-for-gc -rs4gc-use-deopt-bundles -S 2>&1 | FileCheck %s + +; The rewriting needs to make %obj loop variant by inserting a phi +; of the original value and it's relocation. + +declare i64 addrspace(1)* @generate_obj() "gc-leaf-function" + +declare void @use_obj(i64 addrspace(1)*) "gc-leaf-function" + +define void @def_use_safepoint() gc "statepoint-example" { +; CHECK-LABEL: def_use_safepoint +; CHECK: phi i64 addrspace(1)* +; CHECK-DAG: [ %obj.relocated.casted, %loop ] +; CHECK-DAG: [ %obj, %entry ] +entry: + %obj = call i64 addrspace(1)* @generate_obj() + br label %loop + +loop: ; preds = %loop, %entry + call void @use_obj(i64 addrspace(1)* %obj) + call void @do_safepoint() [ "deopt"(i32 0, i32 -1, i32 0, i32 0, i32 0) ] + br label %loop +} + +declare void @do_safepoint() + +declare void @parse_point(i64 addrspace(1)*) + +define i64 addrspace(1)* @test1(i32 %caller, i8 addrspace(1)* %a, i8 addrspace(1)* %b, i32 %unknown) gc "statepoint-example" { +; CHECK-LABEL: test1 +entry: + br i1 undef, label %left, label %right + +left: ; preds = %entry +; CHECK: left: +; CHECK-NEXT: %a.cast = bitcast i8 addrspace(1)* %a to i64 addrspace(1)* +; CHECK-NEXT: [[CAST_L:%.*]] = bitcast i8 addrspace(1)* %a to i64 addrspace(1)* +; Our safepoint placement pass calls removeUnreachableBlocks, which does a bunch +; of simplifications to branch instructions. This bug is visible only when +; there are multiple branches into the same block from the same predecessor, and +; the following ceremony is to make that artefact survive a call to +; removeUnreachableBlocks. As an example, "br i1 undef, label %merge, label %merge" +; will get simplified to "br label %merge" by removeUnreachableBlocks. + %a.cast = bitcast i8 addrspace(1)* %a to i64 addrspace(1)* + switch i32 %unknown, label %right [ + i32 0, label %merge + i32 1, label %merge + i32 5, label %merge + i32 3, label %right + ] + +right: ; preds = %left, %left, %entry +; CHECK: right: +; CHECK-NEXT: %b.cast = bitcast i8 addrspace(1)* %b to i64 addrspace(1)* +; CHECK-NEXT: [[CAST_R:%.*]] = bitcast i8 addrspace(1)* %b to i64 addrspace(1)* + %b.cast = bitcast i8 addrspace(1)* %b to i64 addrspace(1)* + br label %merge + +merge: ; preds = %right, %left, %left, %left +; CHECK: merge: +; CHECK-NEXT: %value.base = phi i64 addrspace(1)* [ [[CAST_L]], %left ], [ [[CAST_L]], %left ], [ [[CAST_L]], %left ], [ [[CAST_R]], %right ], !is_base_value !0 + %value = phi i64 addrspace(1)* [ %a.cast, %left ], [ %a.cast, %left ], [ %a.cast, %left ], [ %b.cast, %right ] + call void @parse_point(i64 addrspace(1)* %value) [ "deopt"(i32 0, i32 0, i32 0, i32 0, i32 0) ] + ret i64 addrspace(1)* %value +} + +;; The purpose of this test is to ensure that when two live values share a +;; base defining value with inherent conflicts, we end up with a *single* +;; base phi/select per such node. This is testing an optimization, not a +;; fundemental correctness criteria +define void @test2(i1 %cnd, i64 addrspace(1)* %base_obj, i64 addrspace(1)* %base_arg2) gc "statepoint-example" { +; CHECK-LABEL: @test2 +entry: + %obj = getelementptr i64, i64 addrspace(1)* %base_obj, i32 1 + br label %loop +; CHECK-LABEL: loop +; CHECK: %current.base = phi i64 addrspace(1)* +; CHECK-DAG: [ %base_obj, %entry ] + +; Given the two selects are equivelent, so are their base phis - ideally, +; we'd have commoned these, but that's a missed optimization, not correctness. +; CHECK-DAG: [ [[DISCARD:%.*.base.relocated.casted]], %loop ] +; CHECK-NOT: extra.base +; CHECK: next = select +; CHECK: extra2.base = select +; CHECK: extra2 = select +; CHECK: statepoint +;; Both 'next' and 'extra2' are live across the backedge safepoint... + +loop: ; preds = %loop, %entry + %current = phi i64 addrspace(1)* [ %obj, %entry ], [ %next, %loop ] + %extra = phi i64 addrspace(1)* [ %obj, %entry ], [ %extra2, %loop ] + %nexta = getelementptr i64, i64 addrspace(1)* %current, i32 1 + %next = select i1 %cnd, i64 addrspace(1)* %nexta, i64 addrspace(1)* %base_arg2 + %extra2 = select i1 %cnd, i64 addrspace(1)* %nexta, i64 addrspace(1)* %base_arg2 + call void @foo() [ "deopt"(i32 0, i32 -1, i32 0, i32 0, i32 0) ] + br label %loop +} + +define i64 addrspace(1)* @test3(i1 %cnd, i64 addrspace(1)* %obj, i64 addrspace(1)* %obj2) gc "statepoint-example" { +; CHECK-LABEL: @test3 +entry: + br i1 %cnd, label %merge, label %taken + +taken: ; preds = %entry + br label %merge + +merge: ; preds = %taken, %entry +; CHECK-LABEL: merge: +; CHECK-NEXT: %bdv = phi +; CHECK-NEXT: gc.statepoint + %bdv = phi i64 addrspace(1)* [ %obj, %entry ], [ %obj2, %taken ] + call void @foo() [ "deopt"(i32 0, i32 -1, i32 0, i32 0, i32 0) ] + ret i64 addrspace(1)* %bdv +} + +define i64 addrspace(1)* @test4(i1 %cnd, i64 addrspace(1)* %obj, i64 addrspace(1)* %obj2) gc "statepoint-example" { +; CHECK-LABEL: @test4 +entry: + br i1 %cnd, label %merge, label %taken + +taken: ; preds = %entry + br label %merge + +merge: ; preds = %taken, %entry +; CHECK-LABEL: merge: +; CHECK-NEXT: %bdv = phi +; CHECK-NEXT: gc.statepoint + %bdv = phi i64 addrspace(1)* [ %obj, %entry ], [ %obj, %taken ] + call void @foo() [ "deopt"(i32 0, i32 -1, i32 0, i32 0, i32 0) ] + ret i64 addrspace(1)* %bdv +} + +define i64 addrspace(1)* @test5(i1 %cnd, i64 addrspace(1)* %obj, i64 addrspace(1)* %obj2) gc "statepoint-example" { +; CHECK-LABEL: @test5 +entry: + br label %merge + +merge: ; preds = %merge, %entry +; CHECK-LABEL: merge: +; CHECK-NEXT: %bdv = phi +; CHECK-NEXT: br i1 + %bdv = phi i64 addrspace(1)* [ %obj, %entry ], [ %obj2, %merge ] + br i1 %cnd, label %merge, label %next + +next: ; preds = %merge + call void @foo() [ "deopt"(i32 0, i32 -1, i32 0, i32 0, i32 0) ] + ret i64 addrspace(1)* %bdv +} + +declare void @foo() diff --git a/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/base-vector.ll b/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/base-vector.ll new file mode 100644 index 00000000000..96b7390b77b --- /dev/null +++ b/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/base-vector.ll @@ -0,0 +1,167 @@ +; RUN: opt %s -rewrite-statepoints-for-gc -rs4gc-use-deopt-bundles -S | FileCheck %s + + +define i64 addrspace(1)* @test(<2 x i64 addrspace(1)*> %vec, i32 %idx) gc "statepoint-example" { +; CHECK-LABEL: @test +; CHECK: extractelement +; CHECK: extractelement +; CHECK: statepoint +; CHECK: gc.relocate +; CHECK-DAG: ; (%base_ee, %base_ee) +; CHECK: gc.relocate +; CHECK-DAG: ; (%base_ee, %obj) +; Note that the second extractelement is actually redundant here. A correct output would +; be to reuse the existing obj as a base since it is actually a base pointer. +entry: + %obj = extractelement <2 x i64 addrspace(1)*> %vec, i32 %idx + call void @do_safepoint() [ "deopt"() ] + ret i64 addrspace(1)* %obj +} + +define i64 addrspace(1)* @test2(<2 x i64 addrspace(1)*>* %ptr, i1 %cnd, i32 %idx1, i32 %idx2) gc "statepoint-example" { +; CHECK-LABEL: test2 +entry: + br i1 %cnd, label %taken, label %untaken + +taken: ; preds = %entry + %obja = load <2 x i64 addrspace(1)*>, <2 x i64 addrspace(1)*>* %ptr + br label %merge + +untaken: ; preds = %entry + %objb = load <2 x i64 addrspace(1)*>, <2 x i64 addrspace(1)*>* %ptr + br label %merge + +merge: ; preds = %untaken, %taken + %vec = phi <2 x i64 addrspace(1)*> [ %obja, %taken ], [ %objb, %untaken ] + br i1 %cnd, label %taken2, label %untaken2 + +taken2: ; preds = %merge + %obj0 = extractelement <2 x i64 addrspace(1)*> %vec, i32 %idx1 + br label %merge2 + +untaken2: ; preds = %merge + %obj1 = extractelement <2 x i64 addrspace(1)*> %vec, i32 %idx2 + br label %merge2 + +merge2: ; preds = %untaken2, %taken2 +; CHECK-LABEL: merge2: +; CHECK-NEXT: %obj = phi i64 addrspace(1)* +; CHECK-NEXT: statepoint +; CHECK: gc.relocate +; CHECK-DAG: ; (%obj, %obj) + %obj = phi i64 addrspace(1)* [ %obj0, %taken2 ], [ %obj1, %untaken2 ] + call void @do_safepoint() [ "deopt"() ] + ret i64 addrspace(1)* %obj +} + +define i64 addrspace(1)* @test3(i64 addrspace(1)* %ptr) gc "statepoint-example" { +; CHECK-LABEL: test3 +; CHECK: insertelement +; CHECK: extractelement +; CHECK: statepoint +; CHECK: gc.relocate +; CHECK-DAG: (%obj, %obj) +entry: + %vec = insertelement <2 x i64 addrspace(1)*> undef, i64 addrspace(1)* %ptr, i32 0 + %obj = extractelement <2 x i64 addrspace(1)*> %vec, i32 0 + call void @do_safepoint() [ "deopt"() ] + ret i64 addrspace(1)* %obj +} + +define i64 addrspace(1)* @test4(i64 addrspace(1)* %ptr) gc "statepoint-example" { +; CHECK-LABEL: test4 +; CHECK: statepoint +; CHECK: gc.relocate +; CHECK-DAG: ; (%ptr, %obj) +; CHECK: gc.relocate +; CHECK-DAG: ; (%ptr, %ptr) +; When we can optimize an extractelement from a known +; index and avoid introducing new base pointer instructions +entry: + %derived = getelementptr i64, i64 addrspace(1)* %ptr, i64 16 + %veca = insertelement <2 x i64 addrspace(1)*> undef, i64 addrspace(1)* %derived, i32 0 + %vec = insertelement <2 x i64 addrspace(1)*> %veca, i64 addrspace(1)* %ptr, i32 1 + %obj = extractelement <2 x i64 addrspace(1)*> %vec, i32 0 + call void @do_safepoint() [ "deopt"() ] + ret i64 addrspace(1)* %obj +} + +declare void @use(i64 addrspace(1)*) "gc-leaf-function" + +define void @test5(i1 %cnd, i64 addrspace(1)* %obj) gc "statepoint-example" { +; CHECK-LABEL: @test5 +; CHECK: gc.relocate +; CHECK-DAG: (%obj, %bdv) +; When we fundementally have to duplicate +entry: + %gep = getelementptr i64, i64 addrspace(1)* %obj, i64 1 + %vec = insertelement <2 x i64 addrspace(1)*> undef, i64 addrspace(1)* %gep, i32 0 + %bdv = extractelement <2 x i64 addrspace(1)*> %vec, i32 0 + call void @do_safepoint() [ "deopt"(i32 0, i32 -1, i32 0, i32 0, i32 0) ] + call void @use(i64 addrspace(1)* %bdv) + ret void +} + +define void @test6(i1 %cnd, i64 addrspace(1)* %obj, i64 %idx) gc "statepoint-example" { +; CHECK-LABEL: @test6 +; CHECK: %gep = getelementptr i64, i64 addrspace(1)* %obj, i64 1 +; CHECK: %vec.base = insertelement <2 x i64 addrspace(1)*> undef, i64 addrspace(1)* %obj, i32 0, !is_base_value !0 +; CHECK: %vec = insertelement <2 x i64 addrspace(1)*> undef, i64 addrspace(1)* %gep, i32 0 +; CHECK: %bdv.base = extractelement <2 x i64 addrspace(1)*> %vec.base, i64 %idx, !is_base_value !0 +; CHECK: %bdv = extractelement <2 x i64 addrspace(1)*> %vec, i64 %idx +; CHECK: gc.statepoint +; CHECK: gc.relocate +; CHECK-DAG: (%bdv.base, %bdv) +; A more complicated example involving vector and scalar bases. +; This is derived from a failing test case when we didn't have correct +; insertelement handling. +entry: + %gep = getelementptr i64, i64 addrspace(1)* %obj, i64 1 + %vec = insertelement <2 x i64 addrspace(1)*> undef, i64 addrspace(1)* %gep, i32 0 + %bdv = extractelement <2 x i64 addrspace(1)*> %vec, i64 %idx + call void @do_safepoint() [ "deopt"(i32 0, i32 -1, i32 0, i32 0, i32 0) ] + call void @use(i64 addrspace(1)* %bdv) + ret void +} + +define i64 addrspace(1)* @test7(i1 %cnd, i64 addrspace(1)* %obj, i64 addrspace(1)* %obj2) gc "statepoint-example" { +; CHECK-LABEL: @test7 +entry: + %vec = insertelement <2 x i64 addrspace(1)*> undef, i64 addrspace(1)* %obj2, i32 0 + br label %merge1 + +merge1: ; preds = %merge1, %entry +; CHECK-LABEL: merge1: +; CHECK: vec2.base +; CHECK: vec2 +; CHECK: gep +; CHECK: vec3.base +; CHECK: vec3 + %vec2 = phi <2 x i64 addrspace(1)*> [ %vec, %entry ], [ %vec3, %merge1 ] + %gep = getelementptr i64, i64 addrspace(1)* %obj2, i64 1 + %vec3 = insertelement <2 x i64 addrspace(1)*> undef, i64 addrspace(1)* %gep, i32 0 + br i1 %cnd, label %merge1, label %next1 + +next1: ; preds = %merge1 +; CHECK-LABEL: next1: +; CHECK: bdv.base = +; CHECK: bdv = + %bdv = extractelement <2 x i64 addrspace(1)*> %vec2, i32 0 + br label %merge + +merge: ; preds = %merge, %next1 +; CHECK-LABEL: merge: +; CHECK: %objb.base +; CHECK: %objb +; CHECK: gc.statepoint +; CHECK: gc.relocate +; CHECK-DAG: (%objb.base, %objb) + %objb = phi i64 addrspace(1)* [ %obj, %next1 ], [ %bdv, %merge ] + br i1 %cnd, label %merge, label %next + +next: ; preds = %merge + call void @do_safepoint() [ "deopt"(i32 0, i32 -1, i32 0, i32 0, i32 0) ] + ret i64 addrspace(1)* %objb +} + +declare void @do_safepoint() diff --git a/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/basic.ll b/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/basic.ll new file mode 100644 index 00000000000..3b029f19233 --- /dev/null +++ b/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/basic.ll @@ -0,0 +1,65 @@ +; RUN: opt -S -rewrite-statepoints-for-gc -rs4gc-use-deopt-bundles < %s | FileCheck %s + +declare void @g() +declare i32 @h() + +define i32 addrspace(1)* @f0(i32 addrspace(1)* %arg) gc "statepoint-example" { +; CHECK-LABEL: @f0( + entry: +; CHECK: [[TOKEN_0:%[^ ]+]] = call i32 {{[^@]*}} @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* @g, i32 0, i32 0, i32 0, i32 1, i32 100, i32 addrspace(1)* %arg) + call void @g() [ "deopt"(i32 100) ] + +; CHECK: %arg.relocated = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(i32 [[TOKEN_0]], i32 8, i32 8) + ret i32 addrspace(1)* %arg +} + +define i32 addrspace(1)* @f1(i32 addrspace(1)* %arg) gc "statepoint-example" personality i32 8 { +; CHECK-LABEL: @f1( + entry: +; CHECK: [[TOKEN_1:%[^ ]+]] = invoke i32 (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* @g, i32 0, i32 0, i32 0, i32 1, i32 100, i32 addrspace(1)* %arg) + invoke void @g() [ "deopt"(i32 100) ] to label %normal_dest unwind label %unwind_dest + + normal_dest: +; CHECK: %arg.relocated1 = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(i32 [[TOKEN_1]], i32 8, i32 8) + ret i32 addrspace(1)* %arg + + unwind_dest: + %lpad = landingpad { i8*, i32 } cleanup + resume { i8*, i32 } undef +} + +define i32 addrspace(1)* @f2(i32 addrspace(1)* %arg) gc "statepoint-example" { +; CHECK-LABEL: @f2( + entry: +; CHECK: [[TOKEN_2:%[^ ]+]] = call i32 (i64, i32, i32 ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_i32f(i64 2882400000, i32 0, i32 ()* @h, i32 0, i32 0, i32 0, i32 1, i32 100, i32 addrspace(1)* %arg) + %val = call i32 @h() [ "deopt"(i32 100) ] + +; CHECK: [[RESULT_F2:%[^ ]+]] = call i32 @llvm.experimental.gc.result.i32(i32 [[TOKEN_2]]) +; CHECK: %arg.relocated = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(i32 [[TOKEN_2]], i32 8, i32 8) +; CHECK: %arg.relocated.casted = bitcast i8 addrspace(1)* %arg.relocated to i32 addrspace(1)* + + store i32 %val, i32 addrspace(1)* %arg +; CHECK: store i32 [[RESULT_F2]], i32 addrspace(1)* %arg.relocated.casted + ret i32 addrspace(1)* %arg +} + +define i32 addrspace(1)* @f3(i32 addrspace(1)* %arg) gc "statepoint-example" personality i32 8 { +; CHECK-LABEL: @f3( + entry: +; CHECK: [[TOKEN_3:%[^ ]+]] = invoke i32 (i64, i32, i32 ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_i32f(i64 2882400000, i32 0, i32 ()* @h, i32 0, i32 0, i32 0, i32 1, i32 100, i32 addrspace(1)* %arg) + %val = invoke i32 @h() [ "deopt"(i32 100) ] to label %normal_dest unwind label %unwind_dest + + normal_dest: +; CHECK: [[RESULT_F3:%[^ ]+]] = call i32 @llvm.experimental.gc.result.i32(i32 [[TOKEN_3]]) +; CHECK: [[ARG_RELOCATED:%[^ ]+]] = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(i32 [[TOKEN_3]], i32 8, i32 8) +; CHECK: [[ARG_RELOCATED_CASTED:%[^ ]+]] = bitcast i8 addrspace(1)* [[ARG_RELOCATED]] to i32 addrspace(1)* + + store i32 %val, i32 addrspace(1)* %arg + +; CHECK: store i32 [[RESULT_F3]], i32 addrspace(1)* [[ARG_RELOCATED_CASTED]] + ret i32 addrspace(1)* %arg + + unwind_dest: + %lpad = landingpad { i8*, i32 } cleanup + resume { i8*, i32 } undef +} diff --git a/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/basics.ll b/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/basics.ll new file mode 100644 index 00000000000..5197bbb0795 --- /dev/null +++ b/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/basics.ll @@ -0,0 +1,88 @@ +; This is a collection of really basic tests for gc.statepoint rewriting. +; RUN: opt %s -rewrite-statepoints-for-gc -rs4gc-use-deopt-bundles -spp-rematerialization-threshold=0 -S | FileCheck %s + +; Trivial relocation over a single call + +declare void @foo() + +define i8 addrspace(1)* @test1(i8 addrspace(1)* %obj) gc "statepoint-example" { +; CHECK-LABEL: @test1 +entry: +; CHECK-LABEL: entry: +; CHECK-NEXT: gc.statepoint +; CHECK-NEXT: %obj.relocated = call coldcc i8 addrspace(1)* +; Two safepoints in a row (i.e. consistent liveness) + call void @foo() [ "deopt"(i32 0, i32 -1, i32 0, i32 0, i32 0) ] + ret i8 addrspace(1)* %obj +} + +define i8 addrspace(1)* @test2(i8 addrspace(1)* %obj) gc "statepoint-example" { +; CHECK-LABEL: @test2 +entry: +; CHECK-LABEL: entry: +; CHECK-NEXT: gc.statepoint +; CHECK-NEXT: %obj.relocated = call coldcc i8 addrspace(1)* +; CHECK-NEXT: gc.statepoint +; CHECK-NEXT: %obj.relocated2 = call coldcc i8 addrspace(1)* +; A simple derived pointer + call void @foo() [ "deopt"(i32 0, i32 -1, i32 0, i32 0, i32 0) ] + call void @foo() [ "deopt"(i32 0, i32 -1, i32 0, i32 0, i32 0) ] + ret i8 addrspace(1)* %obj +} + +define i8 @test3(i8 addrspace(1)* %obj) gc "statepoint-example" { +entry: +; CHECK-LABEL: entry: +; CHECK-NEXT: getelementptr +; CHECK-NEXT: gc.statepoint +; CHECK-NEXT: %derived.relocated = call coldcc i8 addrspace(1)* +; CHECK-NEXT: %obj.relocated = call coldcc i8 addrspace(1)* +; CHECK-NEXT: load i8, i8 addrspace(1)* %derived.relocated +; CHECK-NEXT: load i8, i8 addrspace(1)* %obj.relocated +; Tests to make sure we visit both the taken and untaken predeccessor +; of merge. This was a bug in the dataflow liveness at one point. + %derived = getelementptr i8, i8 addrspace(1)* %obj, i64 10 + call void @foo() [ "deopt"(i32 0, i32 -1, i32 0, i32 0, i32 0) ] + %a = load i8, i8 addrspace(1)* %derived + %b = load i8, i8 addrspace(1)* %obj + %c = sub i8 %a, %b + ret i8 %c +} + +define i8 addrspace(1)* @test4(i1 %cmp, i8 addrspace(1)* %obj) gc "statepoint-example" { +entry: + br i1 %cmp, label %taken, label %untaken + +taken: ; preds = %entry +; CHECK-LABEL: taken: +; CHECK-NEXT: gc.statepoint +; CHECK-NEXT: %obj.relocated = call coldcc i8 addrspace(1)* + call void @foo() [ "deopt"(i32 0, i32 -1, i32 0, i32 0, i32 0) ] + br label %merge + +untaken: ; preds = %entry +; CHECK-LABEL: untaken: +; CHECK-NEXT: gc.statepoint +; CHECK-NEXT: %obj.relocated2 = call coldcc i8 addrspace(1)* + call void @foo() [ "deopt"(i32 0, i32 -1, i32 0, i32 0, i32 0) ] + br label %merge + +merge: ; preds = %untaken, %taken +; CHECK-LABEL: merge: +; CHECK-NEXT: %.0 = phi i8 addrspace(1)* [ %obj.relocated, %taken ], [ %obj.relocated2, %untaken ] +; CHECK-NEXT: ret i8 addrspace(1)* %.0 +; When run over a function which doesn't opt in, should do nothing! + ret i8 addrspace(1)* %obj +} + +define i8 addrspace(1)* @test5(i8 addrspace(1)* %obj) gc "ocaml" { +; CHECK-LABEL: @test5 +entry: +; CHECK-LABEL: entry: +; CHECK-NEXT: gc.statepoint +; CHECK-NOT: %obj.relocated = call coldcc i8 addrspace(1)* + %0 = call i32 (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* @foo, i32 0, i32 0, i32 0, i32 5, i32 0, i32 -1, i32 0, i32 0, i32 0) + ret i8 addrspace(1)* %obj +} + +declare i32 @llvm.experimental.gc.statepoint.p0f_isVoidf(i64, i32, void ()*, i32, i32, ...) diff --git a/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/codegen-cond.ll b/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/codegen-cond.ll new file mode 100644 index 00000000000..f0da0c06db0 --- /dev/null +++ b/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/codegen-cond.ll @@ -0,0 +1,81 @@ +; RUN: opt -rewrite-statepoints-for-gc -rs4gc-use-deopt-bundles -S < %s | FileCheck %s + +; A null test of a single value + +define i1 @test(i8 addrspace(1)* %p, i1 %rare) gc "statepoint-example" { +; CHECK-LABEL: @test +entry: + %cond = icmp eq i8 addrspace(1)* %p, null + br i1 %rare, label %safepoint, label %continue, !prof !0 + +safepoint: ; preds = %entry + call void @safepoint() [ "deopt"() ] + br label %continue + +continue: ; preds = %safepoint, %entry +; CHECK-LABEL: continue: +; CHECK: phi +; CHECK-DAG: [ %p.relocated, %safepoint ] +; CHECK-DAG: [ %p, %entry ] +; CHECK: %cond = icmp +; CHECK: br i1 %cond +; Comparing two pointers + br i1 %cond, label %taken, label %untaken + +taken: ; preds = %continue + ret i1 true + +untaken: ; preds = %continue + ret i1 false +} + +define i1 @test2(i8 addrspace(1)* %p, i8 addrspace(1)* %q, i1 %rare) gc "statepoint-example" { +; CHECK-LABEL: @test2 +entry: + %cond = icmp eq i8 addrspace(1)* %p, %q + br i1 %rare, label %safepoint, label %continue, !prof !0 + +safepoint: ; preds = %entry + call void @safepoint() [ "deopt"() ] + br label %continue + +continue: ; preds = %safepoint, %entry +; CHECK-LABEL: continue: +; CHECK: phi +; CHECK-DAG: [ %q.relocated, %safepoint ] +; CHECK-DAG: [ %q, %entry ] +; CHECK: phi +; CHECK-DAG: [ %p.relocated, %safepoint ] +; CHECK-DAG: [ %p, %entry ] +; CHECK: %cond = icmp +; CHECK: br i1 %cond +; Sanity check that nothing bad happens if already last instruction +; before terminator + br i1 %cond, label %taken, label %untaken + +taken: ; preds = %continue + ret i1 true + +untaken: ; preds = %continue + ret i1 false +} + +define i1 @test3(i8 addrspace(1)* %p, i8 addrspace(1)* %q, i1 %rare) gc "statepoint-example" { +; CHECK-LABEL: @test3 +; CHECK: gc.statepoint +; CHECK: %cond = icmp +; CHECK: br i1 %cond +entry: + call void @safepoint() [ "deopt"() ] + %cond = icmp eq i8 addrspace(1)* %p, %q + br i1 %cond, label %taken, label %untaken + +taken: ; preds = %entry + ret i1 true + +untaken: ; preds = %entry + ret i1 false +} + +declare void @safepoint() +!0 = !{!"branch_weights", i32 1, i32 10000} diff --git a/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/constants.ll b/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/constants.ll new file mode 100644 index 00000000000..eede1b09d16 --- /dev/null +++ b/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/constants.ll @@ -0,0 +1,51 @@ +; RUN: opt -S -rewrite-statepoints-for-gc -rs4gc-use-deopt-bundles %s | FileCheck %s + +; constants don't get relocated. +@G = addrspace(1) global i8 5 + +declare void @foo() + +define i8 @test() gc "statepoint-example" { +; CHECK-LABEL: @test +; CHECK: gc.statepoint +; CHECK-NEXT: load i8, i8 addrspace(1)* inttoptr (i64 15 to i8 addrspace(1)*) +; Mostly just here to show reasonable code test can come from. +entry: + call void @foo() [ "deopt"() ] + %res = load i8, i8 addrspace(1)* inttoptr (i64 15 to i8 addrspace(1)*) + ret i8 %res +} + +define i8 @test2(i8 addrspace(1)* %p) gc "statepoint-example" { +; CHECK-LABEL: @test2 +; CHECK: gc.statepoint +; CHECK-NEXT: gc.relocate +; CHECK-NEXT: icmp +; Globals don't move and thus don't get relocated +entry: + call void @foo() [ "deopt"() ] + %cmp = icmp eq i8 addrspace(1)* %p, null + br i1 %cmp, label %taken, label %not_taken + +taken: ; preds = %not_taken, %entry + ret i8 0 + +not_taken: ; preds = %entry + %cmp2 = icmp ne i8 addrspace(1)* %p, null + br i1 %cmp2, label %taken, label %dead + +dead: ; preds = %not_taken + %addr = getelementptr i8, i8 addrspace(1)* %p, i32 15 + %res = load i8, i8 addrspace(1)* %addr + ret i8 %res +} + +define i8 @test3(i1 %always_true) gc "statepoint-example" { +; CHECK-LABEL: @test3 +; CHECK: gc.statepoint +; CHECK-NEXT: load i8, i8 addrspace(1)* @G +entry: + call void @foo() [ "deopt"() ] + %res = load i8, i8 addrspace(1)* @G, align 1 + ret i8 %res +} diff --git a/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/deref-pointers.ll b/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/deref-pointers.ll new file mode 100644 index 00000000000..f868d5b8361 --- /dev/null +++ b/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/deref-pointers.ll @@ -0,0 +1,77 @@ +; RUN: opt -S -rewrite-statepoints-for-gc -rs4gc-use-deopt-bundles < %s | FileCheck %s + +; CHECK: declare i8 addrspace(1)* @some_function_ret_deref() +; CHECK: define i8 addrspace(1)* @test_deref_arg(i8 addrspace(1)* %a) +; CHECK: define i8 addrspace(1)* @test_deref_or_null_arg(i8 addrspace(1)* %a) + +declare void @foo() + +declare i8 addrspace(1)* @some_function() "gc-leaf-function" + +declare void @some_function_consumer(i8 addrspace(1)*) "gc-leaf-function" + +declare dereferenceable(4) i8 addrspace(1)* @some_function_ret_deref() "gc-leaf-function" + +define i8 addrspace(1)* @test_deref_arg(i8 addrspace(1)* dereferenceable(4) %a) gc "statepoint-example" { +entry: + call void @foo() [ "deopt"(i32 0, i32 -1, i32 0, i32 0, i32 0) ] + ret i8 addrspace(1)* %a +} + +define i8 addrspace(1)* @test_deref_or_null_arg(i8 addrspace(1)* dereferenceable_or_null(4) %a) gc "statepoint-example" { +entry: + call void @foo() [ "deopt"(i32 0, i32 -1, i32 0, i32 0, i32 0) ] + ret i8 addrspace(1)* %a +} + +define i8 addrspace(1)* @test_deref_retval() gc "statepoint-example" { +; CHECK-LABEL: @test_deref_retval( +; CHECK: %a = call i8 addrspace(1)* @some_function() +entry: + %a = call dereferenceable(4) i8 addrspace(1)* @some_function() + call void @foo() [ "deopt"(i32 0, i32 -1, i32 0, i32 0, i32 0) ] + ret i8 addrspace(1)* %a +} + +define i8 addrspace(1)* @test_deref_or_null_retval() gc "statepoint-example" { +; CHECK-LABEL: @test_deref_or_null_retval( +; CHECK: %a = call i8 addrspace(1)* @some_function() +entry: + %a = call dereferenceable_or_null(4) i8 addrspace(1)* @some_function() + call void @foo() [ "deopt"(i32 0, i32 -1, i32 0, i32 0, i32 0) ] + ret i8 addrspace(1)* %a +} + +define i8 @test_md(i8 addrspace(1)* %ptr) gc "statepoint-example" { +; CHECK-LABEL: @test_md( +; CHECK: %tmp = load i8, i8 addrspace(1)* %ptr, !tbaa !0 +entry: + %tmp = load i8, i8 addrspace(1)* %ptr, !tbaa !0 + call void @foo() [ "deopt"(i32 0, i32 -1, i32 0, i32 0, i32 0) ] + ret i8 %tmp +} + +define i8 addrspace(1)* @test_decl_only_attribute(i8 addrspace(1)* %ptr) gc "statepoint-example" { +; CHECK-LABEL: @test_decl_only_attribute( +; No change here, but the prototype of some_function_ret_deref should have changed. +; CHECK: call i8 addrspace(1)* @some_function_ret_deref() +entry: + %a = call i8 addrspace(1)* @some_function_ret_deref() + call void @foo() [ "deopt"(i32 0, i32 -1, i32 0, i32 0, i32 0) ] + ret i8 addrspace(1)* %a +} + +define i8 addrspace(1)* @test_callsite_arg_attribute(i8 addrspace(1)* %ptr) gc "statepoint-example" { +; CHECK-LABEL: @test_callsite_arg_attribute( +; CHECK: call void @some_function_consumer(i8 addrspace(1)* %ptr) +; CHECK: !0 = !{!1, !1, i64 0} +; CHECK: !1 = !{!"red", !2} +; CHECK: !2 = !{!"blue"} +entry: + call void @some_function_consumer(i8 addrspace(1)* dereferenceable(4) %ptr) + call void @foo() [ "deopt"(i32 0, i32 -1, i32 0, i32 0, i32 0) ] + ret i8 addrspace(1)* %ptr +} +!0 = !{!1, !1, i64 0, i64 1} +!1 = !{!"red", !2} +!2 = !{!"blue"} diff --git a/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/gc-relocate-creation.ll b/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/gc-relocate-creation.ll new file mode 100644 index 00000000000..ee0c9736d9a --- /dev/null +++ b/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/gc-relocate-creation.ll @@ -0,0 +1,22 @@ +; RUN: opt %s -rewrite-statepoints-for-gc -rs4gc-use-deopt-bundles -S 2>&1 | FileCheck %s + +; This test is to verify gc.relocate can handle pointer to vector of +; pointers (<2 x i32 addrspace(1)*> addrspace(1)* in this case). +; The old scheme to create a gc.relocate of <2 x i32 addrspace(1)*> addrspace(1)* +; type will fail because llvm does not support mangling vector of pointers. +; The new scheme will create all gc.relocate to i8 addrspace(1)* type and +; then bitcast to the correct type. + +declare void @foo() + +declare void @use(...) "gc-leaf-function" + +define void @test1(<2 x i32 addrspace(1)*> addrspace(1)* %obj) gc "statepoint-example" { +entry: +; CHECK: %obj.relocated = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(i32 %statepoint_token, i32 7, i32 7) +; CHECK-NEXT: %obj.relocated.casted = bitcast i8 addrspace(1)* %obj.relocated to <2 x i32 addrspace(1)*> addrspace(1)* + + call void @foo() [ "deopt"() ] + call void (...) @use(<2 x i32 addrspace(1)*> addrspace(1)* %obj) + ret void +} diff --git a/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/live-vector.ll b/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/live-vector.ll new file mode 100644 index 00000000000..8940029738e --- /dev/null +++ b/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/live-vector.ll @@ -0,0 +1,149 @@ +; Test that we can correctly handle vectors of pointers in statepoint +; rewriting. Currently, we scalarize, but that's an implementation detail. +; RUN: opt %s -rewrite-statepoints-for-gc -rs4gc-use-deopt-bundles -S | FileCheck %s + +; A non-vector relocation for comparison + +define i64 addrspace(1)* @test(i64 addrspace(1)* %obj) gc "statepoint-example" { +; CHECK-LABEL: test +; CHECK: gc.statepoint +; CHECK-NEXT: gc.relocate +; CHECK-NEXT: bitcast +; CHECK-NEXT: ret i64 addrspace(1)* %obj.relocated.casted +; A base vector from a argument +entry: + call void @do_safepoint() [ "deopt"() ] + ret i64 addrspace(1)* %obj +} + +define <2 x i64 addrspace(1)*> @test2(<2 x i64 addrspace(1)*> %obj) gc "statepoint-example" { +; CHECK-LABEL: test2 +; CHECK: extractelement +; CHECK-NEXT: extractelement +; CHECK-NEXT: gc.statepoint +; CHECK-NEXT: gc.relocate +; CHECK-NEXT: bitcast +; CHECK-NEXT: gc.relocate +; CHECK-NEXT: bitcast +; CHECK-NEXT: insertelement +; CHECK-NEXT: insertelement +; CHECK-NEXT: ret <2 x i64 addrspace(1)*> %7 +; A base vector from a load +entry: + call void @do_safepoint() [ "deopt"() ] + ret <2 x i64 addrspace(1)*> %obj +} + +define <2 x i64 addrspace(1)*> @test3(<2 x i64 addrspace(1)*>* %ptr) gc "statepoint-example" { +; CHECK-LABEL: test3 +; CHECK: load +; CHECK-NEXT: extractelement +; CHECK-NEXT: extractelement +; CHECK-NEXT: gc.statepoint +; CHECK-NEXT: gc.relocate +; CHECK-NEXT: bitcast +; CHECK-NEXT: gc.relocate +; CHECK-NEXT: bitcast +; CHECK-NEXT: insertelement +; CHECK-NEXT: insertelement +; CHECK-NEXT: ret <2 x i64 addrspace(1)*> %7 +; When a statepoint is an invoke rather than a call +entry: + %obj = load <2 x i64 addrspace(1)*>, <2 x i64 addrspace(1)*>* %ptr + call void @do_safepoint() [ "deopt"() ] + ret <2 x i64 addrspace(1)*> %obj +} + +declare i32 @fake_personality_function() + +define <2 x i64 addrspace(1)*> @test4(<2 x i64 addrspace(1)*>* %ptr) gc "statepoint-example" personality i32 ()* @fake_personality_function { +; CHECK-LABEL: test4 +; CHECK: load +; CHECK-NEXT: extractelement +; CHECK-NEXT: extractelement +; CHECK-NEXT: gc.statepoint +entry: + %obj = load <2 x i64 addrspace(1)*>, <2 x i64 addrspace(1)*>* %ptr + invoke void @do_safepoint() [ "deopt"() ] + to label %normal_return unwind label %exceptional_return + +normal_return: ; preds = %entry +; CHECK-LABEL: normal_return: +; CHECK: gc.relocate +; CHECK-NEXT: bitcast +; CHECK-NEXT: gc.relocate +; CHECK-NEXT: bitcast +; CHECK-NEXT: insertelement +; CHECK-NEXT: insertelement +; CHECK-NEXT: ret <2 x i64 addrspace(1)*> %7 + ret <2 x i64 addrspace(1)*> %obj + +exceptional_return: ; preds = %entry +; CHECK-LABEL: exceptional_return: +; CHECK: gc.relocate +; CHECK-NEXT: bitcast +; CHECK-NEXT: gc.relocate +; CHECK-NEXT: bitcast +; CHECK-NEXT: insertelement +; CHECK-NEXT: insertelement +; CHECK-NEXT: ret <2 x i64 addrspace(1)*> %13 +; Can we handle an insert element with a constant offset? This effectively +; tests both the equal and inequal case since we have to relocate both indices +; in the vector. + %landing_pad4 = landingpad { i8*, i32 } + cleanup + ret <2 x i64 addrspace(1)*> %obj +} + +define <2 x i64 addrspace(1)*> @test5(i64 addrspace(1)* %p) gc "statepoint-example" { +; CHECK-LABEL: test5 +; CHECK: insertelement +; CHECK-NEXT: extractelement +; CHECK-NEXT: extractelement +; CHECK-NEXT: gc.statepoint +; CHECK-NEXT: gc.relocate +; CHECK-NEXT: bitcast +; CHECK-NEXT: gc.relocate +; CHECK-NEXT: bitcast +; CHECK-NEXT: insertelement +; CHECK-NEXT: insertelement +; CHECK-NEXT: ret <2 x i64 addrspace(1)*> %7 +; A base vector from a load +entry: + %vec = insertelement <2 x i64 addrspace(1)*> undef, i64 addrspace(1)* %p, i32 0 + call void @do_safepoint() [ "deopt"() ] + ret <2 x i64 addrspace(1)*> %vec +} + +define <2 x i64 addrspace(1)*> @test6(i1 %cnd, <2 x i64 addrspace(1)*>* %ptr) gc "statepoint-example" { +; CHECK-LABEL: test6 +entry: + br i1 %cnd, label %taken, label %untaken + +taken: ; preds = %entry + %obja = load <2 x i64 addrspace(1)*>, <2 x i64 addrspace(1)*>* %ptr + br label %merge + +untaken: ; preds = %entry + %objb = load <2 x i64 addrspace(1)*>, <2 x i64 addrspace(1)*>* %ptr + br label %merge + +merge: ; preds = %untaken, %taken +; CHECK-LABEL: merge: +; CHECK-NEXT: = phi +; CHECK-NEXT: extractelement +; CHECK-NEXT: extractelement +; CHECK-NEXT: gc.statepoint +; CHECK-NEXT: gc.relocate +; CHECK-NEXT: bitcast +; CHECK-NEXT: gc.relocate +; CHECK-NEXT: bitcast +; CHECK-NEXT: insertelement +; CHECK-NEXT: insertelement +; CHECK-NEXT: ret <2 x i64 addrspace(1)*> + %obj = phi <2 x i64 addrspace(1)*> [ %obja, %taken ], [ %objb, %untaken ] + call void @do_safepoint() [ "deopt"() ] + ret <2 x i64 addrspace(1)*> %obj +} + +declare void @do_safepoint() diff --git a/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/liveness-basics.ll b/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/liveness-basics.ll new file mode 100644 index 00000000000..c5b213f4c82 --- /dev/null +++ b/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/liveness-basics.ll @@ -0,0 +1,165 @@ +; A collection of liveness test cases to ensure we're reporting the +; correct live values at statepoints +; RUN: opt -rewrite-statepoints-for-gc -rs4gc-use-deopt-bundles -spp-rematerialization-threshold=0 -S < %s | FileCheck %s + +; Tests to make sure we consider %obj live in both the taken and untaken +; predeccessor of merge. + +define i64 addrspace(1)* @test1(i1 %cmp, i64 addrspace(1)* %obj) gc "statepoint-example" { +; CHECK-LABEL: @test1 +entry: + br i1 %cmp, label %taken, label %untaken + +taken: ; preds = %entry +; CHECK-LABEL: taken: +; CHECK-NEXT: gc.statepoint +; CHECK-NEXT: %obj.relocated = call coldcc i8 addrspace(1)* +; CHECK-NEXT: bitcast +; CHECK-NEXT: br label %merge + call void @foo() [ "deopt"() ] + br label %merge + +untaken: ; preds = %entry +; CHECK-LABEL: untaken: +; CHECK-NEXT: gc.statepoint +; CHECK-NEXT: %obj.relocated2 = call coldcc i8 addrspace(1)* +; CHECK-NEXT: bitcast +; CHECK-NEXT: br label %merge + call void @foo() [ "deopt"() ] + br label %merge + +merge: ; preds = %untaken, %taken +; CHECK-LABEL: merge: +; CHECK-NEXT: %.0 = phi i64 addrspace(1)* [ %obj.relocated.casted, %taken ], [ %obj.relocated2.casted, %untaken ] +; CHECK-NEXT: ret i64 addrspace(1)* %.0 +; A local kill should not effect liveness in predecessor block + ret i64 addrspace(1)* %obj +} + +define i64 addrspace(1)* @test2(i1 %cmp, i64 addrspace(1)** %loc) gc "statepoint-example" { +; CHECK-LABEL: @test2 +entry: +; CHECK-LABEL: entry: +; CHECK-NEXT: gc.statepoint +; CHECK-NEXT: br + call void @foo() [ "deopt"() ] + br i1 %cmp, label %taken, label %untaken + +taken: ; preds = %entry +; CHECK-LABEL: taken: +; CHECK-NEXT: %obj = load +; CHECK-NEXT: gc.statepoint +; CHECK-NEXT: gc.relocate +; CHECK-NEXT: bitcast +; CHECK-NEXT: ret i64 addrspace(1)* %obj.relocated.casted +; A local kill should effect values live from a successor phi. Also, we +; should only propagate liveness from a phi to the appropriate predecessors. + %obj = load i64 addrspace(1)*, i64 addrspace(1)** %loc + call void @foo() [ "deopt"() ] + ret i64 addrspace(1)* %obj + +untaken: ; preds = %entry + ret i64 addrspace(1)* null +} + +define i64 addrspace(1)* @test3(i1 %cmp, i64 addrspace(1)** %loc) gc "statepoint-example" { +; CHECK-LABEL: @test3 +entry: + br i1 %cmp, label %taken, label %untaken + +taken: ; preds = %entry +; CHECK-LABEL: taken: +; CHECK-NEXT: gc.statepoint +; CHECK-NEXT: %obj = load +; CHECK-NEXT: gc.statepoint +; CHECK-NEXT: %obj.relocated = call coldcc i8 addrspace(1)* +; CHECK-NEXT: bitcast +; CHECK-NEXT: br label %merge + call void @foo() [ "deopt"() ] + %obj = load i64 addrspace(1)*, i64 addrspace(1)** %loc + call void @foo() [ "deopt"() ] + br label %merge + +untaken: ; preds = %entry +; CHECK-LABEL: taken: +; CHECK-NEXT: gc.statepoint +; CHECK-NEXT: br label %merge +; A base pointer must be live if it is needed at a later statepoint, +; even if the base pointer is otherwise unused. + call void @foo() [ "deopt"() ] + br label %merge + +merge: ; preds = %untaken, %taken + %phi = phi i64 addrspace(1)* [ %obj, %taken ], [ null, %untaken ] + ret i64 addrspace(1)* %phi +} + +define i64 addrspace(1)* @test4(i1 %cmp, i64 addrspace(1)* %obj) gc "statepoint-example" { +; CHECK-LABEL: @test4 +entry: +; CHECK-LABEL: entry: +; CHECK-NEXT: %derived = getelementptr +; CHECK-NEXT: gc.statepoint +; CHECK-NEXT: %derived.relocated = +; CHECK-NEXT: bitcast +; CHECK-NEXT: %obj.relocated = +; CHECK-NEXT: bitcast +; CHECK-NEXT: gc.statepoint +; CHECK-NEXT: %derived.relocated2 = +; CHECK-NEXT: bitcast + +; Note: It's legal to relocate obj again, but not strictly needed +; CHECK-NEXT: %obj.relocated3 = +; CHECK-NEXT: bitcast +; CHECK-NEXT: ret i64 addrspace(1)* %derived.relocated2.casted +; +; Make sure that a phi def visited during iteration is considered a kill. +; Also, liveness after base pointer analysis can change based on new uses, +; not just new defs. + %derived = getelementptr i64, i64 addrspace(1)* %obj, i64 8 + call void @foo() [ "deopt"() ] + call void @foo() [ "deopt"() ] + ret i64 addrspace(1)* %derived +} + +declare void @consume(...) readonly "gc-leaf-function" + +define i64 addrspace(1)* @test5(i1 %cmp, i64 addrspace(1)* %obj) gc "statepoint-example" { +; CHECK-LABEL: @test5 +entry: + br i1 %cmp, label %taken, label %untaken + +taken: ; preds = %entry +; CHECK-LABEL: taken: +; CHECK-NEXT: gc.statepoint +; CHECK-NEXT: %obj.relocated = call coldcc i8 addrspace(1)* +; CHECK-NEXT: bitcast +; CHECK-NEXT: br label %merge + call void @foo() [ "deopt"() ] + br label %merge + +untaken: ; preds = %entry +; CHECK-LABEL: untaken: +; CHECK-NEXT: br label %merge + br label %merge + +merge: ; preds = %untaken, %taken +; CHECK-LABEL: merge: +; CHECK-NEXT: %.0 = phi i64 addrspace(1)* +; CHECK-NEXT: %obj2a = phi +; CHECK-NEXT: @consume +; CHECK-NEXT: br label %final + %obj2a = phi i64 addrspace(1)* [ %obj, %taken ], [ null, %untaken ] + call void (...) @consume(i64 addrspace(1)* %obj2a) + br label %final + +final: ; preds = %merge +; CHECK-LABEL: final: +; CHECK-NEXT: @consume +; CHECK-NEXT: ret i64 addrspace(1)* %.0 + call void (...) @consume(i64 addrspace(1)* %obj2a) + ret i64 addrspace(1)* %obj +} + +declare void @foo() + diff --git a/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/preprocess.ll b/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/preprocess.ll new file mode 100644 index 00000000000..e0bd542aa5d --- /dev/null +++ b/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/preprocess.ll @@ -0,0 +1,62 @@ +; RUN: opt -rewrite-statepoints-for-gc -rs4gc-use-deopt-bundles -S < %s | FileCheck %s + +; Test to make sure we destroy LCSSA's single entry phi nodes before +; running liveness + +declare void @consume(...) "gc-leaf-function" + +define void @test6(i64 addrspace(1)* %obj) gc "statepoint-example" { +; CHECK-LABEL: @test6 +entry: + br label %next + +next: ; preds = %entry +; CHECK-LABEL: next: +; CHECK-NEXT: gc.statepoint +; CHECK-NEXT: gc.relocate +; CHECK-NEXT: bitcast +; CHECK-NEXT: @consume(i64 addrspace(1)* %obj.relocated.casted) +; CHECK-NEXT: @consume(i64 addrspace(1)* %obj.relocated.casted) +; Need to delete unreachable gc.statepoint call + %obj2 = phi i64 addrspace(1)* [ %obj, %entry ] + call void @foo() [ "deopt"() ] + call void (...) @consume(i64 addrspace(1)* %obj2) + call void (...) @consume(i64 addrspace(1)* %obj) + ret void +} + +define void @test7() gc "statepoint-example" { +; CHECK-LABEL: test7 +; CHECK-NOT: gc.statepoint +; Need to delete unreachable gc.statepoint invoke - tested seperately given +; a correct implementation could only remove the instructions, not the block + ret void + +unreached: ; preds = %unreached + %obj = phi i64 addrspace(1)* [ null, %unreached ] + call void @foo() [ "deopt"() ] + call void (...) @consume(i64 addrspace(1)* %obj) + br label %unreached +} + +define void @test8() gc "statepoint-example" personality i32 ()* undef { +; CHECK-LABEL: test8 +; CHECK-NOT: gc.statepoint +; Bound the last check-not + ret void + +unreached: ; No predecessors! + invoke void @foo() [ "deopt"() ] +; CHECK-LABEL: @foo + to label %normal_return unwind label %exceptional_return + +normal_return: ; preds = %unreached + ret void + +exceptional_return: ; preds = %unreached + %landing_pad4 = landingpad { i8*, i32 } + cleanup + ret void +} + +declare void @foo() diff --git a/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/relocate-invoke-result.ll b/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/relocate-invoke-result.ll new file mode 100644 index 00000000000..688cf36168d --- /dev/null +++ b/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/relocate-invoke-result.ll @@ -0,0 +1,32 @@ + +;; RUN: opt -rewrite-statepoints-for-gc -rs4gc-use-deopt-bundles -verify -S < %s | FileCheck %s +;; This test is to verify that RewriteStatepointsForGC correctly relocates values +;; defined by invoke instruction results. + +declare i64* addrspace(1)* @non_gc_call() "gc-leaf-function" + +declare void @gc_call() + +declare i32* @fake_personality_function() + +define i64* addrspace(1)* @test() gc "statepoint-example" personality i32* ()* @fake_personality_function { +; CHECK-LABEL: @test( + +entry: + %obj = invoke i64* addrspace(1)* @non_gc_call() + to label %normal_dest unwind label %unwind_dest + +unwind_dest: ; preds = %entry + %lpad = landingpad { i8*, i32 } + cleanup + resume { i8*, i32 } undef + +normal_dest: ; preds = %entry +; CHECK: normal_dest: +; CHECK-NEXT: gc.statepoint +; CHECK-NEXT: %obj.relocated = call coldcc i8 addrspace(1)* +; CHECK-NEXT: bitcast + + call void @gc_call() [ "deopt"(i32 0, i32 -1, i32 0, i32 0, i32 0) ] + ret i64* addrspace(1)* %obj +} diff --git a/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/relocation.ll b/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/relocation.ll new file mode 100644 index 00000000000..584dc32b752 --- /dev/null +++ b/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/relocation.ll @@ -0,0 +1,279 @@ +; RUN: opt %s -rewrite-statepoints-for-gc -rs4gc-use-deopt-bundles -spp-rematerialization-threshold=0 -S 2>&1 | FileCheck %s + + +declare void @foo() + +declare void @use(...) "gc-leaf-function" + +define i64 addrspace(1)* @test1(i64 addrspace(1)* %obj, i64 addrspace(1)* %obj2, i1 %condition) gc "statepoint-example" { +; CHECK-LABEL: @test1 +; CHECK-DAG: %obj.relocated +; CHECK-DAG: %obj2.relocated +entry: + call void @foo() [ "deopt"() ] + br label %joint + +joint: ; preds = %joint2, %entry +; CHECK-LABEL: joint: +; CHECK: %phi1 = phi i64 addrspace(1)* [ %obj.relocated.casted, %entry ], [ %obj3, %joint2 ] + %phi1 = phi i64 addrspace(1)* [ %obj, %entry ], [ %obj3, %joint2 ] + br i1 %condition, label %use, label %joint2 + +use: ; preds = %joint + br label %joint2 + +joint2: ; preds = %use, %joint +; CHECK-LABEL: joint2: +; CHECK: %phi2 = phi i64 addrspace(1)* [ %obj.relocated.casted, %use ], [ %obj2.relocated.casted, %joint ] +; CHECK: %obj3 = getelementptr i64, i64 addrspace(1)* %obj2.relocated.casted, i32 1 + %phi2 = phi i64 addrspace(1)* [ %obj, %use ], [ %obj2, %joint ] + %obj3 = getelementptr i64, i64 addrspace(1)* %obj2, i32 1 + br label %joint +} + +declare i64 addrspace(1)* @generate_obj() "gc-leaf-function" + +declare void @consume_obj(i64 addrspace(1)*) "gc-leaf-function" + +declare i1 @rt() "gc-leaf-function" + +define void @test2() gc "statepoint-example" { +; CHECK-LABEL: @test2 +entry: + %obj_init = call i64 addrspace(1)* @generate_obj() + %obj = getelementptr i64, i64 addrspace(1)* %obj_init, i32 42 + br label %loop + +loop: ; preds = %loop.backedge, %entry +; CHECK: loop: +; CHECK-DAG: [ %obj_init.relocated.casted, %loop.backedge ] +; CHECK-DAG: [ %obj_init, %entry ] +; CHECK-DAG: [ %obj.relocated.casted, %loop.backedge ] +; CHECK-DAG: [ %obj, %entry ] +; CHECK-NOT: %location = getelementptr i64, i64 addrspace(1)* %obj, i32 %index + %index = phi i32 [ 0, %entry ], [ %index.inc, %loop.backedge ] + %location = getelementptr i64, i64 addrspace(1)* %obj, i32 %index + call void @consume_obj(i64 addrspace(1)* %location) + %index.inc = add i32 %index, 1 + %condition = call i1 @rt() + br i1 %condition, label %loop_x, label %loop_y + +loop_x: ; preds = %loop + br label %loop.backedge + +loop.backedge: ; preds = %loop_y, %loop_x + call void @do_safepoint() [ "deopt"() ] + br label %loop + +loop_y: ; preds = %loop + br label %loop.backedge +} + +declare void @some_call(i8 addrspace(1)*) "gc-leaf-function" + +define void @relocate_merge(i1 %cnd, i8 addrspace(1)* %arg) gc "statepoint-example" { +; CHECK-LABEL: @relocate_merge + +bci_0: + br i1 %cnd, label %if_branch, label %else_branch + +if_branch: ; preds = %bci_0 +; CHECK-LABEL: if_branch: +; CHECK: gc.statepoint +; CHECK: gc.relocate + call void @foo() [ "deopt"() ] + br label %join + +else_branch: ; preds = %bci_0 +; CHECK-LABEL: else_branch: +; CHECK: gc.statepoint +; CHECK: gc.relocate +; We need to end up with a single relocation phi updated from both paths + call void @foo() [ "deopt"() ] + br label %join + +join: ; preds = %else_branch, %if_branch +; CHECK-LABEL: join: +; CHECK: phi i8 addrspace(1)* +; CHECK-DAG: [ %arg.relocated, %if_branch ] +; CHECK-DAG: [ %arg.relocated2, %else_branch ] +; CHECK-NOT: phi + call void @some_call(i8 addrspace(1)* %arg) + ret void +} + +; Make sure a use in a statepoint gets properly relocated at a previous one. +; This is basically just making sure that statepoints aren't accidentally +; treated specially. +define void @test3(i64 addrspace(1)* %obj) gc "statepoint-example" { +; CHECK-LABEL: @test3 +; CHECK: gc.statepoint +; CHECK-NEXT: gc.relocate +; CHECK-NEXT: bitcast +; CHECK-NEXT: gc.statepoint +entry: + call void undef(i64 undef) [ "deopt"(i32 0, i32 -1, i32 0, i32 0, i32 0) ] + %0 = call i32 undef(i64 addrspace(1)* %obj) [ "deopt"(i32 0, i32 -1, i32 0, i32 0, i32 0) ] + ret void +} + +; Check specifically for the case where the result of a statepoint needs to +; be relocated itself +define void @test4() gc "statepoint-example" { +; CHECK-LABEL: @test4 +; CHECK: gc.statepoint +; CHECK: gc.result +; CHECK: gc.statepoint +; CHECK: [[RELOCATED:%[^ ]+]] = call {{.*}}gc.relocate +; CHECK: @use(i8 addrspace(1)* [[RELOCATED]]) + %1 = call i8 addrspace(1)* undef() [ "deopt"() ] + %2 = call i8 addrspace(1)* undef() [ "deopt"() ] + call void (...) @use(i8 addrspace(1)* %1) + unreachable +} + +; Test updating a phi where not all inputs are live to begin with +define void @test5(i8 addrspace(1)* %arg) gc "statepoint-example" { +; CHECK-LABEL: test5 +entry: + %0 = call i8 addrspace(1)* undef() [ "deopt"() ] + switch i32 undef, label %kill [ + i32 10, label %merge + i32 13, label %merge + ] + +kill: ; preds = %entry + br label %merge + +merge: ; preds = %kill, %entry, %entry +; CHECK: merge: +; CHECK: %test = phi i8 addrspace(1) +; CHECK-DAG: [ null, %kill ] +; CHECK-DAG: [ %arg.relocated, %entry ] +; CHECK-DAG: [ %arg.relocated, %entry ] + %test = phi i8 addrspace(1)* [ null, %kill ], [ %arg, %entry ], [ %arg, %entry ] + call void (...) @use(i8 addrspace(1)* %test) + unreachable +} + +; Check to make sure we handle values live over an entry statepoint +define void @test6(i8 addrspace(1)* %arg1, i8 addrspace(1)* %arg2, i8 addrspace(1)* %arg3) gc "statepoint-example" { +; CHECK-LABEL: @test6 +entry: + br i1 undef, label %gc.safepoint_poll.exit2, label %do_safepoint + +do_safepoint: ; preds = %entry +; CHECK-LABEL: do_safepoint: +; CHECK: gc.statepoint +; CHECK: arg1.relocated = +; CHECK: arg2.relocated = +; CHECK: arg3.relocated = + call void @foo() [ "deopt"(i8 addrspace(1)* %arg1, i8 addrspace(1)* %arg2, i8 addrspace(1)* %arg3) ] + br label %gc.safepoint_poll.exit2 + +gc.safepoint_poll.exit2: ; preds = %do_safepoint, %entry +; CHECK-LABEL: gc.safepoint_poll.exit2: +; CHECK: phi i8 addrspace(1)* +; CHECK-DAG: [ %arg3, %entry ] +; CHECK-DAG: [ %arg3.relocated, %do_safepoint ] +; CHECK: phi i8 addrspace(1)* +; CHECK-DAG: [ %arg2, %entry ] +; CHECK-DAG: [ %arg2.relocated, %do_safepoint ] +; CHECK: phi i8 addrspace(1)* +; CHECK-DAG: [ %arg1, %entry ] +; CHECK-DAG: [ %arg1.relocated, %do_safepoint ] + call void (...) @use(i8 addrspace(1)* %arg1, i8 addrspace(1)* %arg2, i8 addrspace(1)* %arg3) + ret void +} + +; Check relocation in a loop nest where a relocation happens in the outer +; but not the inner loop +define void @test_outer_loop(i8 addrspace(1)* %arg1, i8 addrspace(1)* %arg2, i1 %cmp) gc "statepoint-example" { +; CHECK-LABEL: @test_outer_loop + +bci_0: + br label %outer-loop + +outer-loop: ; preds = %outer-inc, %bci_0 +; CHECK-LABEL: outer-loop: +; CHECK: phi i8 addrspace(1)* [ %arg2, %bci_0 ], [ %arg2.relocated, %outer-inc ] +; CHECK: phi i8 addrspace(1)* [ %arg1, %bci_0 ], [ %arg1.relocated, %outer-inc ] + br label %inner-loop + +inner-loop: ; preds = %inner-loop, %outer-loop + br i1 %cmp, label %inner-loop, label %outer-inc + +outer-inc: ; preds = %inner-loop +; CHECK-LABEL: outer-inc: +; CHECK: %arg1.relocated +; CHECK: %arg2.relocated + call void @foo() [ "deopt"(i8 addrspace(1)* %arg1, i8 addrspace(1)* %arg2) ] + br label %outer-loop +} + +; Check that both inner and outer loops get phis when relocation is in +; inner loop +define void @test_inner_loop(i8 addrspace(1)* %arg1, i8 addrspace(1)* %arg2, i1 %cmp) gc "statepoint-example" { +; CHECK-LABEL: @test_inner_loop + +bci_0: + br label %outer-loop + +outer-loop: ; preds = %outer-inc, %bci_0 +; CHECK-LABEL: outer-loop: +; CHECK: phi i8 addrspace(1)* [ %arg2, %bci_0 ], [ %arg2.relocated, %outer-inc ] +; CHECK: phi i8 addrspace(1)* [ %arg1, %bci_0 ], [ %arg1.relocated, %outer-inc ] + br label %inner-loop +; CHECK-LABEL: inner-loop +; CHECK: phi i8 addrspace(1)* +; CHECK-DAG: %outer-loop ] +; CHECK-DAG: [ %arg2.relocated, %inner-loop ] +; CHECK: phi i8 addrspace(1)* +; CHECK-DAG: %outer-loop ] +; CHECK-DAG: [ %arg1.relocated, %inner-loop ] +; CHECK: gc.statepoint +; CHECK: %arg1.relocated +; CHECK: %arg2.relocated + +inner-loop: ; preds = %inner-loop, %outer-loop + call void @foo() [ "deopt"(i8 addrspace(1)* %arg1, i8 addrspace(1)* %arg2) ] + br i1 %cmp, label %inner-loop, label %outer-inc + +outer-inc: ; preds = %inner-loop +; CHECK-LABEL: outer-inc: +; This test shows why updating just those uses of the original value being +; relocated dominated by the inserted relocation is not always sufficient. + br label %outer-loop +} + +define i64 addrspace(1)* @test7(i64 addrspace(1)* %obj, i64 addrspace(1)* %obj2, i1 %condition) gc "statepoint-example" { +; CHECK-LABEL: @test7 +entry: + br i1 %condition, label %branch2, label %join + +branch2: ; preds = %entry + br i1 %condition, label %callbb, label %join2 + +callbb: ; preds = %branch2 + call void @foo() [ "deopt"(i32 0, i32 -1, i32 0, i32 0, i32 0) ] + br label %join + +join: ; preds = %callbb, %entry +; CHECK-LABEL: join: +; CHECK: phi i64 addrspace(1)* [ %obj.relocated.casted, %callbb ], [ %obj, %entry ] +; CHECK: phi i64 addrspace(1)* +; CHECK-DAG: [ %obj, %entry ] +; CHECK-DAG: [ %obj2.relocated.casted, %callbb ] + %phi1 = phi i64 addrspace(1)* [ %obj, %entry ], [ %obj2, %callbb ] + br label %join2 + +join2: ; preds = %join, %branch2 +; CHECK-LABEL: join2: +; CHECK: phi2 = phi i64 addrspace(1)* +; CHECK-DAG: %join ] +; CHECK-DAG: [ %obj2, %branch2 ] + %phi2 = phi i64 addrspace(1)* [ %obj, %join ], [ %obj2, %branch2 ] + ret i64 addrspace(1)* %phi2 +} + +declare void @do_safepoint() diff --git a/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/rematerialize-derived-pointers.ll b/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/rematerialize-derived-pointers.ll new file mode 100644 index 00000000000..748c28132b6 --- /dev/null +++ b/llvm/test/Transforms/RewriteStatepointsForGC/deopt-bundles/rematerialize-derived-pointers.ll @@ -0,0 +1,150 @@ +; RUN: opt %s -rewrite-statepoints-for-gc -rs4gc-use-deopt-bundles -S 2>&1 | FileCheck %s + + +declare void @use_obj16(i16 addrspace(1)*) "gc-leaf-function" +declare void @use_obj32(i32 addrspace(1)*) "gc-leaf-function" +declare void @use_obj64(i64 addrspace(1)*) "gc-leaf-function" + +declare void @do_safepoint() + +define void @test_gep_const(i32 addrspace(1)* %base) gc "statepoint-example" { +; CHECK-LABEL: test_gep_const +entry: + %ptr = getelementptr i32, i32 addrspace(1)* %base, i32 15 + call void @do_safepoint() [ "deopt"() ] + call void @use_obj32(i32 addrspace(1)* %base) + call void @use_obj32(i32 addrspace(1)* %ptr) + ret void +} + +define void @test_gep_idx(i32 addrspace(1)* %base, i32 %idx) gc "statepoint-example" { +; CHECK-LABEL: test_gep_idx +entry: + %ptr = getelementptr i32, i32 addrspace(1)* %base, i32 %idx + call void @do_safepoint() [ "deopt"() ] + call void @use_obj32(i32 addrspace(1)* %base) + call void @use_obj32(i32 addrspace(1)* %ptr) + ret void +} + +define void @test_bitcast(i32 addrspace(1)* %base) gc "statepoint-example" { +; CHECK-LABEL: test_bitcast +entry: + %ptr = bitcast i32 addrspace(1)* %base to i64 addrspace(1)* + call void @do_safepoint() [ "deopt"() ] + call void @use_obj32(i32 addrspace(1)* %base) + call void @use_obj64(i64 addrspace(1)* %ptr) + ret void +} + +define void @test_bitcast_gep(i32 addrspace(1)* %base) gc "statepoint-example" { +; CHECK-LABEL: test_bitcast_gep +entry: + %ptr.gep = getelementptr i32, i32 addrspace(1)* %base, i32 15 + %ptr.cast = bitcast i32 addrspace(1)* %ptr.gep to i64 addrspace(1)* + call void @do_safepoint() [ "deopt"() ] + call void @use_obj32(i32 addrspace(1)* %base) + call void @use_obj64(i64 addrspace(1)* %ptr.cast) + ret void +} + +define void @test_intersecting_chains(i32 addrspace(1)* %base, i32 %idx) gc "statepoint-example" { +; CHECK-LABEL: test_intersecting_chains +entry: + %ptr.gep = getelementptr i32, i32 addrspace(1)* %base, i32 15 + %ptr.cast = bitcast i32 addrspace(1)* %ptr.gep to i64 addrspace(1)* + %ptr.cast2 = bitcast i32 addrspace(1)* %ptr.gep to i16 addrspace(1)* + call void @do_safepoint() [ "deopt"() ] + call void @use_obj64(i64 addrspace(1)* %ptr.cast) + call void @use_obj16(i16 addrspace(1)* %ptr.cast2) + ret void +} + +define void @test_cost_threshold(i32 addrspace(1)* %base, i32 %idx1, i32 %idx2, i32 %idx3) gc "statepoint-example" { +; CHECK-LABEL: test_cost_threshold +entry: + %ptr.gep = getelementptr i32, i32 addrspace(1)* %base, i32 15 + %ptr.gep2 = getelementptr i32, i32 addrspace(1)* %ptr.gep, i32 %idx1 + %ptr.gep3 = getelementptr i32, i32 addrspace(1)* %ptr.gep2, i32 %idx2 + %ptr.gep4 = getelementptr i32, i32 addrspace(1)* %ptr.gep3, i32 %idx3 + %ptr.cast = bitcast i32 addrspace(1)* %ptr.gep4 to i64 addrspace(1)* + call void @do_safepoint() [ "deopt"() ] + call void @use_obj64(i64 addrspace(1)* %ptr.cast) + ret void +} + +define void @test_two_derived(i32 addrspace(1)* %base) gc "statepoint-example" { +; CHECK-LABEL: test_two_derived +entry: + %ptr = getelementptr i32, i32 addrspace(1)* %base, i32 15 + %ptr2 = getelementptr i32, i32 addrspace(1)* %base, i32 12 + call void @do_safepoint() [ "deopt"() ] + call void @use_obj32(i32 addrspace(1)* %ptr) + call void @use_obj32(i32 addrspace(1)* %ptr2) + ret void +} + +define void @test_gep_smallint_array([3 x i32] addrspace(1)* %base) gc "statepoint-example" { +; CHECK-LABEL: test_gep_smallint_array +entry: + %ptr = getelementptr [3 x i32], [3 x i32] addrspace(1)* %base, i32 0, i32 2 + call void @do_safepoint() [ "deopt"() ] + call void @use_obj32(i32 addrspace(1)* %ptr) + ret void +} + +declare i32 @fake_personality_function() + +define void @test_invoke(i32 addrspace(1)* %base) gc "statepoint-example" personality i32 ()* @fake_personality_function { +; CHECK-LABEL: test_invoke +entry: + %ptr.gep = getelementptr i32, i32 addrspace(1)* %base, i32 15 + %ptr.cast = bitcast i32 addrspace(1)* %ptr.gep to i64 addrspace(1)* + %ptr.cast2 = bitcast i32 addrspace(1)* %ptr.gep to i16 addrspace(1)* + invoke void @do_safepoint() [ "deopt"() ] + to label %normal unwind label %exception + +normal: ; preds = %entry + call void @use_obj64(i64 addrspace(1)* %ptr.cast) + call void @use_obj16(i16 addrspace(1)* %ptr.cast2) + ret void + +exception: ; preds = %entry + %landing_pad4 = landingpad { i8*, i32 } + cleanup + call void @use_obj64(i64 addrspace(1)* %ptr.cast) + call void @use_obj16(i16 addrspace(1)* %ptr.cast2) + ret void +} + +define void @test_loop(i32 addrspace(1)* %base) gc "statepoint-example" { +; CHECK-LABEL: test_loop +entry: + %ptr.gep = getelementptr i32, i32 addrspace(1)* %base, i32 15 + br label %loop + +loop: ; preds = %loop, %entry + call void @use_obj32(i32 addrspace(1)* %ptr.gep) + call void @do_safepoint() [ "deopt"() ] + br label %loop +} + +define void @test_too_long(i32 addrspace(1)* %base) gc "statepoint-example" { +; CHECK-LABEL: test_too_long +entry: + %ptr.gep = getelementptr i32, i32 addrspace(1)* %base, i32 15 + %ptr.gep1 = getelementptr i32, i32 addrspace(1)* %ptr.gep, i32 15 + %ptr.gep2 = getelementptr i32, i32 addrspace(1)* %ptr.gep1, i32 15 + %ptr.gep3 = getelementptr i32, i32 addrspace(1)* %ptr.gep2, i32 15 + %ptr.gep4 = getelementptr i32, i32 addrspace(1)* %ptr.gep3, i32 15 + %ptr.gep5 = getelementptr i32, i32 addrspace(1)* %ptr.gep4, i32 15 + %ptr.gep6 = getelementptr i32, i32 addrspace(1)* %ptr.gep5, i32 15 + %ptr.gep7 = getelementptr i32, i32 addrspace(1)* %ptr.gep6, i32 15 + %ptr.gep8 = getelementptr i32, i32 addrspace(1)* %ptr.gep7, i32 15 + %ptr.gep9 = getelementptr i32, i32 addrspace(1)* %ptr.gep8, i32 15 + %ptr.gep10 = getelementptr i32, i32 addrspace(1)* %ptr.gep9, i32 15 + %ptr.gep11 = getelementptr i32, i32 addrspace(1)* %ptr.gep10, i32 15 + call void @do_safepoint() [ "deopt"() ] + call void @use_obj32(i32 addrspace(1)* %ptr.gep11) + ret void +} |
