1 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py 2 ; RUN: llc < %s -mtriple=i686-unknown- -mcpu=core2 | FileCheck %s --check-prefixes=CHECK,X86 3 ; RUN: llc < %s -mtriple=x86_64-unknown- -mcpu=core2 | FileCheck %s --check-prefixes=CHECK,X64 4 5 ; Basic 64-bit cmpxchg 6 define void @t1(i64* nocapture %p) nounwind ssp { 7 ; X86-LABEL: t1: 8 ; X86: # %bb.0: # %entry 9 ; X86-NEXT: pushl %ebx 10 ; X86-NEXT: pushl %esi 11 ; X86-NEXT: movl {{[0-9]+}}(%esp), %esi 12 ; X86-NEXT: xorl %eax, %eax 13 ; X86-NEXT: xorl %edx, %edx 14 ; X86-NEXT: xorl %ecx, %ecx 15 ; X86-NEXT: movl $1, %ebx 16 ; X86-NEXT: lock cmpxchg8b (%esi) 17 ; X86-NEXT: popl %esi 18 ; X86-NEXT: popl %ebx 19 ; X86-NEXT: retl 20 ; 21 ; X64-LABEL: t1: 22 ; X64: # %bb.0: # %entry 23 ; X64-NEXT: movl $1, %ecx 24 ; X64-NEXT: xorl %eax, %eax 25 ; X64-NEXT: lock cmpxchgq %rcx, (%rdi) 26 ; X64-NEXT: retq 27 entry: 28 %r = cmpxchg i64* %p, i64 0, i64 1 seq_cst seq_cst 29 ret void 30 } 31 32
