xref: /llvm-project/llvm/test/Transforms/GlobalOpt/shrink-global-to-bool.ll (revision d586bd5ca231a6022f439d4c6e43cfeeb53eb1d6)
1; RUN: opt -passes=globalopt --mtriple=amdgcn-amd-amdhsa < %s -S | FileCheck %s
2; REQUIRES: amdgpu-registered-target
3
4@gvar = internal unnamed_addr global i32 undef
5@lvar = internal unnamed_addr addrspace(3) global i32 undef
6
7; Should optimize @gvar.
8; CHECK-NOT: @gvar
9
10; Negative test for AS(3). Skip shrink global to bool optimization.
11; CHECK: @lvar = internal unnamed_addr addrspace(3) global i32 undef
12
13define void @test_global_var(i1 %i) {
14; CHECK-LABEL: @test_global_var(
15; CHECK:    store volatile i32 10, ptr undef, align 4
16;
17entry:
18  br i1 %i, label %bb1, label %exit
19bb1:
20  store i32 10, ptr @gvar
21  br label %exit
22exit:
23  %ld = load i32, ptr @gvar
24  store volatile i32 %ld, ptr undef
25  ret void
26}
27
28define void @test_lds_var(i1 %i) {
29; CHECK-LABEL: @test_lds_var(
30; CHECK:    store i32 10, ptr addrspace(3) @lvar, align 4
31; CHECK:    [[LD:%.*]] = load i32, ptr addrspace(3) @lvar, align 4
32; CHECK:    store volatile i32 [[LD]], ptr undef, align 4
33;
34entry:
35  br i1 %i, label %bb1, label %exit
36bb1:
37  store i32 10, ptr addrspace(3) @lvar
38  br label %exit
39exit:
40  %ld = load i32, ptr addrspace(3) @lvar
41  store volatile i32 %ld, ptr undef
42  ret void
43}
44