File: atomic.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 (21 lines) | stat: -rw-r--r-- 620 bytes parent folder | download | duplicates (3)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
; RUN: opt -basicaa -functionattrs -S < %s | FileCheck %s

; Atomic load/store to local doesn't affect whether a function is
; readnone/readonly.
define i32 @test1(i32 %x) uwtable ssp {
; CHECK: define i32 @test1(i32 %x) uwtable readnone ssp {
entry:
  %x.addr = alloca i32, align 4
  store atomic i32 %x, i32* %x.addr seq_cst, align 4
  %r = load atomic i32* %x.addr seq_cst, align 4
  ret i32 %r
}

; A function with an Acquire load is not readonly.
define i32 @test2(i32* %x) uwtable ssp {
; CHECK: define i32 @test2(i32* nocapture %x) uwtable ssp {
entry:
  %r = load atomic i32* %x seq_cst, align 4
  ret i32 %r
}