diff options
Diffstat (limited to 'llvm/test/Transforms/RewriteStatepointsForGC/deref-pointers.ll')
| -rw-r--r-- | llvm/test/Transforms/RewriteStatepointsForGC/deref-pointers.ll | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/llvm/test/Transforms/RewriteStatepointsForGC/deref-pointers.ll b/llvm/test/Transforms/RewriteStatepointsForGC/deref-pointers.ll new file mode 100644 index 00000000000..2b27172b5b5 --- /dev/null +++ b/llvm/test/Transforms/RewriteStatepointsForGC/deref-pointers.ll @@ -0,0 +1,126 @@ +; RUN: opt -S -rewrite-statepoints-for-gc < %s | FileCheck %s +; RUN: opt -S -passes=rewrite-statepoints-for-gc < %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) +; CHECK: define i8 addrspace(1)* @test_noalias_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" +declare noalias i8 addrspace(1)* @some_function_ret_noalias() "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_noalias_arg(i8 addrspace(1)* noalias %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 addrspace(1)* @test_noalias_retval() gc "statepoint-example" { +; CHECK-LABEL: @test_noalias_retval( +; CHECK: %a = call i8 addrspace(1)* @some_function() +entry: + %a = call noalias 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 [[TAG_old:!.*]] +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 +} + +; Same as test_md() above, but with new-format TBAA metadata. +define i8 @test_md_new(i8 addrspace(1)* %ptr) gc "statepoint-example" { +; CHECK-LABEL: @test_md_new( +; CHECK: %tmp = load i8, i8 addrspace(1)* %ptr, !tbaa [[TAG_new:!.*]] +entry: + %tmp = load i8, i8 addrspace(1)* %ptr, !tbaa !4 + 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_decl_only_noalias(i8 addrspace(1)* %ptr) gc "statepoint-example" { +; CHECK-LABEL: @test_decl_only_noalias( +; No change here, but the prototype of some_function_ret_noalias should have changed. +; CHECK: call i8 addrspace(1)* @some_function_ret_noalias() +entry: + %a = call i8 addrspace(1)* @some_function_ret_noalias() + 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) +entry: + call void @some_function_consumer(i8 addrspace(1)* dereferenceable(4) noalias %ptr) + call void @foo() [ "deopt"(i32 0, i32 -1, i32 0, i32 0, i32 0) ] + ret i8 addrspace(1)* %ptr +} + +!0 = !{!1, !2, i64 0, i64 1} ; TAG_old +!1 = !{!"type_base_old", !2, i64 0} +!2 = !{!"type_access_old", !3} +!3 = !{!"root"} + +!4 = !{!5, !6, i64 0, i64 1, i64 1} ; TAG_new +!5 = !{!3, i64 1, !"type_base_new", !6, i64 0, i64 1} +!6 = !{!3, i64 1, !"type_access_new"} + +; CHECK-DAG: [[ROOT:!.*]] = !{!"root"} +; CHECK-DAG: [[TYPE_access_old:!.*]] = !{!"type_access_old", [[ROOT]]} +; CHECK-DAG: [[TYPE_base_old:!.*]] = !{!"type_base_old", [[TYPE_access_old]], i64 0} +; CHECK-DAG: [[TAG_old]] = !{[[TYPE_base_old]], [[TYPE_access_old]], i64 0} +; CHECK-DAG: [[TYPE_access_new:!.*]] = !{[[ROOT]], i64 1, !"type_access_new"} +; CHECK-DAG: [[TYPE_base_new:!.*]] = !{[[ROOT]], i64 1, !"type_base_new", [[TYPE_access_new]], i64 0, i64 1} +; CHECK-DAG: [[TAG_new]] = !{[[TYPE_base_new]], [[TYPE_access_new]], i64 0, i64 1} |
