xref: /llvm-project/llvm/test/Transforms/NewGVN/load-constant-mem.ll (revision 229640343e400394b315c6798c7c19e8a9bd188c)
1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2; RUN: opt < %s -passes=newgvn -S | FileCheck %s
3; PR4189
4@G = external constant [4 x i32]
5
6define i32 @test(ptr %p, i32 %i) nounwind {
7; CHECK-LABEL: @test(
8; CHECK-NEXT:  entry:
9; CHECK-NEXT:    [[P:%.*]] = getelementptr [4 x i32], ptr @G, i32 0, i32 [[I:%.*]]
10; CHECK-NEXT:    store i8 4, ptr [[P1:%.*]], align 1
11; CHECK-NEXT:    ret i32 0
12;
13entry:
14  %p.i = getelementptr [4 x i32], ptr @G, i32 0, i32 %i
15  %A = load i32, ptr %p.i
16  store i8 4, ptr %p
17  %B = load i32, ptr %p.i
18  %C = sub i32 %A, %B
19  ret i32 %C
20}
21
22