| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py |
| ; RUN: llc < %s -mtriple=x86_64-apple-darwin | FileCheck %s |
| |
| @val = internal global i64 0 |
| @"\01LC" = internal constant [7 x i8] c"0x%lx\0A\00" |
| |
| define i32 @main() nounwind { |
| ; CHECK-LABEL: main: |
| ; CHECK: ## %bb.0: ## %entry |
| ; CHECK-NEXT: pushq %rax |
| ; CHECK-NEXT: movl $1, %ecx |
| ; CHECK-NEXT: xorl %eax, %eax |
| ; CHECK-NEXT: lock cmpxchgq %rcx, {{.*}}(%rip) |
| ; CHECK-NEXT: leaq {{.*}}(%rip), %rdi |
| ; CHECK-NEXT: movq %rax, %rsi |
| ; CHECK-NEXT: xorl %eax, %eax |
| ; CHECK-NEXT: callq _printf |
| ; CHECK-NEXT: xorl %eax, %eax |
| ; CHECK-NEXT: popq %rcx |
| ; CHECK-NEXT: retq |
| 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 |
