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-rw-r--r--llvm/test/CodeGen/X86/cmov.ll4
1 files changed, 4 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/X86/cmov.ll b/llvm/test/CodeGen/X86/cmov.ll
index d96babb4473..f3c9a7addf8 100644
--- a/llvm/test/CodeGen/X86/cmov.ll
+++ b/llvm/test/CodeGen/X86/cmov.ll
@@ -33,6 +33,10 @@ entry:
}
+; x86's 32-bit cmov doesn't clobber the high 32 bits of the destination
+; if the condition is false. An explicit zero-extend (movl) is needed
+; after the cmov.
+
declare void @bar(i64) nounwind
define void @test3(i64 %a, i64 %b, i1 %p) nounwind {
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