CodeGen peephole: fold redundant phys reg copies

[oota-llvm.git] / test / CodeGen / X86 / 2010-10-08-cmpxchg8b.ll

diff --git a/test/CodeGen/X86/2010-10-08-cmpxchg8b.ll b/test/CodeGen/X86/2010-10-08-cmpxchg8b.ll
index 40e7f017dc3daffcf0976fef25b3ba1bb30ff3f3..ee50cb13e63449bed91df859f05ee4bee7b3eb79 100644 (file)
--- a/test/CodeGen/X86/2010-10-08-cmpxchg8b.ll
+++ b/test/CodeGen/X86/2010-10-08-cmpxchg8b.ll
@@ -16,13 +16,11 @@ define void @foo(i64* %ptr) nounwind inlinehint {
 entry:
   br label %loop
 loop:
-; CHECK: lock
-; CHECK-NEXT: cmpxchg8b
-  %r = call i64 @llvm.atomic.cmp.swap.i64.p0i64(i64* %ptr, i64 0, i64 1)
+; CHECK: lock cmpxchg8b
+  %pair = cmpxchg i64* %ptr, i64 0, i64 1 monotonic monotonic
+  %r = extractvalue { i64, i1 } %pair, 0
   %stored1  = icmp eq i64 %r, 0
   br i1 %stored1, label %loop, label %continue
 continue:
   ret void
 }
-
-declare i64 @llvm.atomic.cmp.swap.i64.p0i64(i64* nocapture, i64, i64) nounwind