xref: /llvm-project/llvm/test/Transforms/GlobalOpt/atomic.ll (revision d586bd5ca231a6022f439d4c6e43cfeeb53eb1d6) 
1; RUN: opt -passes=globalopt < %s -S -o - | FileCheck %s
2
3@GV1 = internal global i64 1, align 8
4@GV2 = internal global i32 0, align 4
5
6; CHECK-NOT: @GV1 =
7; CHECK: @GV2 = internal unnamed_addr global i32 0, align 4
8
9define void @test1() {
10entry:
11  %0 = load atomic i8, ptr @GV1 acquire, align 8
12  ret void
13}
14
15; PR17163
16define void @test2a() {
17entry:
18  store atomic i32 10, ptr @GV2 seq_cst, align 4
19  ret void
20}
21define i32 @test2b() {
22entry:
23  %atomic-load = load atomic i32, ptr @GV2 seq_cst, align 4
24  ret i32 %atomic-load
25}
26
27
28define i64 @test3() {
29; CHECK-LABEL: @test3
30; CHECK: ret i64 1
31
32  %val = load atomic i64, ptr @GV1 acquire, align 8
33  ret i64 %val
34}
35