| ; RUN: llc < %s -mtriple=x86_64-apple-darwin | grep xor | count 3 | |
| @val = internal global i64 0 | |
| @"\01LC" = internal constant [7 x i8] c"0x%lx\0A\00" | |
| define i32 @main() nounwind { | |
| entry: | |
| %t0 = cmpxchg i64* @val, i64 0, i64 1 monotonic monotonic | |
| %0 = extractvalue { i64, i1 } %t0, 0 | |
| %1 = tail call i32 (i8*, ...) @printf(i8* getelementptr ([7 x i8], [7 x i8]* @"\01LC", i32 0, i64 0), i64 %0) nounwind | |
| ret i32 0 | |
| } | |
| declare i32 @printf(i8*, ...) nounwind |