xref: /llvm-project/llvm/test/Transforms/GlobalOpt/disable-globals-aa.ll (revision bc698c77af64acfd4f0fa13263d8f708f2f116df)
1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2; RUN: opt -O2 -S %s | FileCheck %s --check-prefix=WITHGLOBALSAA
3; RUN: opt -O2 -enable-global-analyses=0 -S %s | FileCheck %s --check-prefix=NOGLOBALSAA
4
5@glb = internal global i8 0
6
7define i8 @f(ptr %ptr) {
8; WITHGLOBALSAA-LABEL: @f(
9; WITHGLOBALSAA-NEXT:    store i8 1, ptr [[PTR:%.*]], align 1
10; WITHGLOBALSAA-NEXT:    store i1 true, ptr @glb, align 1
11; WITHGLOBALSAA-NEXT:    ret i8 1
12;
13; NOGLOBALSAA-LABEL: @f(
14; NOGLOBALSAA-NEXT:    store i8 1, ptr [[PTR:%.*]], align 1
15; NOGLOBALSAA-NEXT:    store i1 true, ptr @glb, align 1
16; NOGLOBALSAA-NEXT:    [[R:%.*]] = load i8, ptr [[PTR]], align 1
17; NOGLOBALSAA-NEXT:    ret i8 [[R]]
18;
19  store i8 1, ptr %ptr
20  store i8 2, ptr @glb
21  %r = load i8, ptr %ptr
22  ret i8 %r
23}
24
25define i8 @dummy() {
26; WITHGLOBALSAA-LABEL: @dummy(
27; WITHGLOBALSAA-NEXT:    [[VAL_B:%.*]] = load i1, ptr @glb, align 1
28; WITHGLOBALSAA-NEXT:    [[VAL:%.*]] = select i1 [[VAL_B]], i8 2, i8 0
29; WITHGLOBALSAA-NEXT:    ret i8 [[VAL]]
30;
31; NOGLOBALSAA-LABEL: @dummy(
32; NOGLOBALSAA-NEXT:    [[VAL_B:%.*]] = load i1, ptr @glb, align 1
33; NOGLOBALSAA-NEXT:    [[VAL:%.*]] = select i1 [[VAL_B]], i8 2, i8 0
34; NOGLOBALSAA-NEXT:    ret i8 [[VAL]]
35;
36  %val = load i8, ptr @glb
37  ret i8 %val
38}
39