File: atomic-load-store.ll

package info (click to toggle)
llvm-toolchain-13 1%3A13.0.1-6~deb11u1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 1,418,812 kB
  • sloc: cpp: 5,290,827; ansic: 996,570; asm: 544,593; python: 188,212; objc: 72,027; lisp: 30,291; f90: 25,395; sh: 24,900; javascript: 9,780; pascal: 9,398; perl: 7,484; ml: 5,432; awk: 3,523; makefile: 2,892; xml: 953; cs: 573; fortran: 539
file content (30 lines) | stat: -rw-r--r-- 668 bytes parent folder | download | duplicates (18) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
 
; RUN: opt < %s -ipsccp -S | FileCheck %s

; This transformation is safe for atomic loads and stores; check that it works.

@G = internal global i32 17
@C = internal constant i32 222

define i32 @test1() {
	%V = load atomic i32, i32* @G seq_cst, align 4
	%C = icmp eq i32 %V, 17
	br i1 %C, label %T, label %F
T:
	store atomic i32 17, i32* @G seq_cst, align 4
	ret i32 %V
F:	
	store atomic i32 123, i32* @G seq_cst, align 4
	ret i32 0
}
; CHECK-LABEL: define i32 @test1(
; CHECK-NOT: store
; CHECK: ret i32 17

define i32 @test2() {
	%V = load atomic i32, i32* @C seq_cst, align 4
	ret i32 %V
}

; CHECK-LABEL: define i32 @test2(
; CHECK-NOT: load
; CHECK: ret i32 222