Teach the IR Sink pass to (conservatively) respect convergent annotations.

[oota-llvm.git] / test / Transforms / Sink / convergent.ll

diff --git a/test/Transforms/Sink/convergent.ll b/test/Transforms/Sink/convergent.ll
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+++ b/test/Transforms/Sink/convergent.ll
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+; RUN: opt -sink -S < %s | FileCheck %s
+
+; Verify that IR sinking does not move convergent operations to
+; blocks that are not control equivalent.
+
+; CHECK: define i32 @foo
+; CHECK: entry
+; CHECK-NEXT: call i32 @bar
+; CHECK-NEXT: br i1 %arg
+
+define i32 @foo(i1 %arg) {
+entry:
+  %c = call i32 @bar() readonly convergent
+  br i1 %arg, label %then, label %end
+
+then:
+  ret i32 %c
+
+end:
+  ret i32 0
+}
+
+declare i32 @bar() readonly convergent
+