Re-materalized definition instructions may be dead. Whack them.

[oota-llvm.git] / test / CodeGen / X86 / coalescer-remat.ll

diff --git a/test/CodeGen/X86/coalescer-remat.ll b/test/CodeGen/X86/coalescer-remat.ll
new file mode 100644 (file)
index 0000000..ab029f4
--- /dev/null
+++ b/test/CodeGen/X86/coalescer-remat.ll
@@ -0,0 +1,15 @@
+; RUN: llvm-as < %s | llc -mtriple=x86_64-apple-darwin | grep xor | count 3
+
+@val = internal global i64 0           ; <i64*> [#uses=1]
+@"\01LC" = internal constant [7 x i8] c"0x%lx\0A\00"           ; <[7 x i8]*> [#uses=1]
+
+define i32 @main() nounwind {
+entry:
+       %0 = tail call i64 @llvm.atomic.cmp.swap.i64.p0i64(i64* @val, i64 0, i64 1)             ; <i64> [#uses=1]
+       %1 = tail call i32 (i8*, ...)* @printf(i8* getelementptr ([7 x i8]* @"\01LC", i32 0, i64 0), i64 %0) nounwind           ; <i32> [#uses=0]
+       ret i32 0
+}
+
+declare i64 @llvm.atomic.cmp.swap.i64.p0i64(i64*, i64, i64) nounwind
+
+declare i32 @printf(i8*, ...) nounwind