File: atomic-load-store.ll

package info (click to toggle)
llvm-toolchain-15 1%3A15.0.6-4
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,554,644 kB
  • sloc: cpp: 5,922,452; ansic: 1,012,136; asm: 674,362; python: 191,568; objc: 73,855; f90: 42,327; lisp: 31,913; pascal: 11,973; javascript: 10,144; sh: 9,421; perl: 7,447; ml: 5,527; awk: 3,523; makefile: 2,520; xml: 885; cs: 573; fortran: 567
file content (30 lines) | stat: -rw-r--r-- 675 bytes parent folder | download | duplicates (4) 
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 -passes=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