xref: /llvm-project/llvm/test/Transforms/GVN/null-aliases-nothing.ll (revision 23abf931386002fb9d2c11d026846475c224c641)
1; RUN: opt < %s -passes=gvn -S | FileCheck %s
2
3%t = type { i32 }
4declare void @test1f(ptr)
5
6define void @test1(ptr noalias %stuff ) {
7    %before = load i32, ptr %stuff
8
9    call void @test1f(ptr null)
10
11    %after = load i32, ptr %stuff ; <--- This should be a dead load
12    %sum = add i32 %before, %after
13
14    store i32 %sum, ptr %stuff
15    ret void
16; CHECK: load
17; CHECK-NOT: load
18; CHECK: ret void
19}
20