xref: /llvm-project/llvm/test/Transforms/GlobalOpt/2021-08-03-StoreOnceLoadMultiCasts.ll (revision d586bd5ca231a6022f439d4c6e43cfeeb53eb1d6)
1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2; RUN: opt -passes=globalopt -S < %s | FileCheck %s
3
4@g = internal global ptr null, align 8
5
6define signext i32 @f() local_unnamed_addr {
7; CHECK-LABEL: @f(
8; CHECK-NEXT:  entry:
9; CHECK-NEXT:    call void @f1()
10; CHECK-NEXT:    store i32 1, ptr @g.body, align 4
11; CHECK-NEXT:    call void @f1()
12; CHECK-NEXT:    store i8 2, ptr @g.body, align 4
13; CHECK-NEXT:    ret i32 1
14;
15entry:
16  %call = call ptr @malloc(i64 4)
17  store ptr %call, ptr @g, align 8
18  call void @f1()
19  %0 = load ptr, ptr @g, align 8
20  store i32 1, ptr %0, align 4
21  call void @f1()
22  %1 = load ptr, ptr @g, align 8
23  store i8 2, ptr %1, align 4
24  ret i32 1
25}
26
27define signext i32 @main() {
28; CHECK-LABEL: @main(
29; CHECK-NEXT:  entry:
30; CHECK-NEXT:    [[CALL:%.*]] = call signext i32 @f()
31; CHECK-NEXT:    [[TMP0:%.*]] = load i32, ptr @g.body, align 4
32; CHECK-NEXT:    ret i32 [[TMP0]]
33;
34entry:
35  %call = call signext i32 @f()
36  %0 = load ptr, ptr @g, align 8
37  %1 = load i32, ptr %0, align 4
38  ret i32 %1
39}
40
41declare noalias align 16 ptr @malloc(i64) allockind("alloc,uninitialized") allocsize(0)
42declare void @f1()
43