File: cmpxchg16b.ll

package info (click to toggle)
llvm-toolchain-11 1%3A11.0.1-2~deb10u1
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 995,836 kB
  • sloc: cpp: 4,767,656; ansic: 760,916; asm: 477,436; python: 170,940; objc: 69,804; lisp: 29,914; sh: 23,855; f90: 18,173; pascal: 7,551; perl: 7,471; ml: 5,603; awk: 3,489; makefile: 2,573; xml: 915; cs: 573; fortran: 503; javascript: 452
file content (21 lines) | stat: -rw-r--r-- 680 bytes parent folder | download | duplicates (4) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
 
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=x86_64-unknown- -mcpu=core2 | FileCheck %s --check-prefixes=CHECK

; Basic 128-bit cmpxchg
define void @t1(i128* nocapture %p) nounwind ssp {
; CHECK-LABEL: t1:
; CHECK:       # %bb.0: # %entry
; CHECK-NEXT:    pushq %rbx
; CHECK-NEXT:    movl $1, %ebx
; CHECK-NEXT:    xorl %eax, %eax
; CHECK-NEXT:    xorl %edx, %edx
; CHECK-NEXT:    xorl %ecx, %ecx
; CHECK-NEXT:    lock cmpxchg16b (%rdi)
; CHECK-NEXT:    popq %rbx
; CHECK-NEXT:    retq
entry:
  %r = cmpxchg i128* %p, i128 0, i128 1 seq_cst seq_cst
  ret void
}

; FIXME: Handle 128-bit atomicrmw/load atomic/store atomic