diff options
Diffstat (limited to 'llvm/test/Transforms/RewriteStatepointsForGC/call-gc-result.ll')
| -rw-r--r-- | llvm/test/Transforms/RewriteStatepointsForGC/call-gc-result.ll | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/llvm/test/Transforms/RewriteStatepointsForGC/call-gc-result.ll b/llvm/test/Transforms/RewriteStatepointsForGC/call-gc-result.ll new file mode 100644 index 00000000000..a38eb6f6148 --- /dev/null +++ b/llvm/test/Transforms/RewriteStatepointsForGC/call-gc-result.ll @@ -0,0 +1,39 @@ +;; RUN: opt < %s -rewrite-statepoints-for-gc -S | FileCheck %s +;; RUN: opt < %s -passes=rewrite-statepoints-for-gc -S | FileCheck %s + +;; This test is to verify that gc_result from a call statepoint +;; can have preceding phis in its parent basic block. Unlike +;; invoke statepoint, call statepoint does not terminate the +;; block, and thus its gc_result is in the same block with the +;; call statepoint. + +declare i32 @foo() + +define i32 @test1(i1 %cond, i32 %a) gc "statepoint-example" { +entry: + br i1 %cond, label %branch1, label %branch2 + +branch1: + %b = add i32 %a, 1 + br label %merge + +branch2: + br label %merge + +merge: +;; CHECK: %phi = phi i32 [ %a, %branch2 ], [ %b, %branch1 ] +;; CHECK-NEXT: [[TOKEN:%[^ ]+]] = call token (i64, i32, i32 ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_i32f(i64 2882400000, i32 0, i32 ()* @foo, i32 0, i32 0, i32 0, i32 0 +;; CHECK-NEXT: call i32 @llvm.experimental.gc.result.i32(token [[TOKEN]]) + %phi = phi i32 [ %a, %branch2 ], [ %b, %branch1 ] + %ret = call i32 @foo() + ret i32 %ret +} + +; This function is inlined when inserting a poll. +declare void @do_safepoint() +define void @gc.safepoint_poll() { +; CHECK-LABEL: gc.safepoint_poll +entry: + call void @do_safepoint() + ret void +} |
