File: 2009-10-13-AtomicModRef.ll

package info (click to toggle)
llvm-3.0 3.0-10
  • links: PTS, VCS
  • area: main
  • in suites: wheezy
  • size: 75,412 kB
  • sloc: cpp: 468,043; asm: 109,345; ansic: 13,782; sh: 12,935; ml: 4,716; python: 4,351; perl: 2,096; makefile: 1,905; pascal: 1,578; exp: 389; xml: 283; lisp: 187; csh: 117
file content (15 lines) | stat: -rw-r--r-- 470 bytes parent folder | download | duplicates (6) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
 
; RUN: opt -basicaa -gvn -instcombine -S < %s | FileCheck %s
target datalayout = "E-p:64:64:64-a0:0:8-f32:32:32-f64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-v64:64:64-v128:128:128"

define i8 @foo(i8* %ptr) {
  %P = getelementptr i8* %ptr, i32 0
  %Q = getelementptr i8* %ptr, i32 1
; CHECK: getelementptr
  %X = load i8* %P
  %Y = atomicrmw add i8* %Q, i8 1 monotonic
  %Z = load i8* %P
; CHECK-NOT: = load
  %A = sub i8 %X, %Z
  ret i8 %A
; CHECK: ret i8 0
}