1 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2 ; RUN: llc < %s -mtriple=i386-pc-linux -mcpu=corei7 | FileCheck %s
4 define i64 @atomicSub(i64* %a, i64 %b) nounwind {
5 ; CHECK-LABEL: atomicSub:
6 ; CHECK: # %bb.0: # %entry
7 ; CHECK-NEXT: pushl %ebp
8 ; CHECK-NEXT: pushl %ebx
9 ; CHECK-NEXT: pushl %edi
10 ; CHECK-NEXT: pushl %esi
11 ; CHECK-NEXT: movl {{[0-9]+}}(%esp), %esi
12 ; CHECK-NEXT: movl {{[0-9]+}}(%esp), %edi
13 ; CHECK-NEXT: movl {{[0-9]+}}(%esp), %ebp
14 ; CHECK-NEXT: movl (%ebp), %eax
15 ; CHECK-NEXT: movl 4(%ebp), %edx
16 ; CHECK-NEXT: .p2align 4, 0x90
17 ; CHECK-NEXT: .LBB0_1: # %atomicrmw.start
18 ; CHECK-NEXT: # =>This Inner Loop Header: Depth=1
19 ; CHECK-NEXT: movl %eax, %ebx
20 ; CHECK-NEXT: subl %edi, %ebx
21 ; CHECK-NEXT: movl %edx, %ecx
22 ; CHECK-NEXT: sbbl %esi, %ecx
23 ; CHECK-NEXT: lock cmpxchg8b (%ebp)
24 ; CHECK-NEXT: jne .LBB0_1
25 ; CHECK-NEXT: # %bb.2: # %atomicrmw.end
26 ; CHECK-NEXT: popl %esi
27 ; CHECK-NEXT: popl %edi
28 ; CHECK-NEXT: popl %ebx
29 ; CHECK-NEXT: popl %ebp
32 %0 = atomicrmw sub i64* %a, i64 %b seq_cst