File: cas.ll

package info (click to toggle)
llvm-toolchain-21 1%3A21.1.0-1
  • links: PTS, VCS
  • area: main
  • in suites: sid
  • size: 2,235,796 kB
  • sloc: cpp: 7,617,614; ansic: 1,433,901; asm: 1,058,726; python: 252,096; f90: 94,671; objc: 70,753; lisp: 42,813; pascal: 18,401; sh: 10,032; ml: 5,111; perl: 4,720; awk: 3,523; makefile: 3,401; javascript: 2,272; xml: 892; fortran: 770
file content (14 lines) | stat: -rw-r--r-- 354 bytes parent folder | download | duplicates (13) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
 
; RUN: opt < %s -aa-pipeline=basic-aa -passes=gvn,instcombine -S | FileCheck %s

@flag0 = internal global i32 zeroinitializer
@turn = internal global i32 zeroinitializer

; CHECK: ret i32 0

define i32 @main() {
  %a = load i32, ptr @flag0
  %b = atomicrmw xchg ptr @turn, i32 1 monotonic
  %c = load i32, ptr @flag0
  %d = sub i32 %a, %c
  ret i32 %d
}