File: atomic-cmp.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 (18 lines) | stat: -rw-r--r-- 495 bytes parent folder | download | duplicates (11) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
 
; RUN: llc < %s -mtriple=armv7-apple-darwin -verify-machineinstrs   | FileCheck %s -check-prefix=ARM
; RUN: llc < %s -mtriple=thumbv7-apple-darwin -verify-machineinstrs | FileCheck %s -check-prefix=T2
; rdar://8964854

define i8 @t(i8* %a, i8 %b, i8 %c) nounwind {
; ARM-LABEL: t:
; ARM: ldrexb
; ARM: strexb
; ARM: clrex

; T2-LABEL: t:
; T2: ldrexb
; T2: strexb
; T2: clrex
  %tmp0 = cmpxchg i8* %a, i8 %b, i8 %c monotonic monotonic
  %tmp1 = extractvalue { i8, i1 } %tmp0, 0
  ret i8 %tmp1
}