1; Test if the !invariant.load metadata is maintained by GVN.
2; RUN: opt -basicaa -gvn -S < %s | FileCheck %s
3
4define i32 @test1(i32* nocapture %p, i8* nocapture %q) {
5; CHECK-LABEL: test1
6; CHECK: %x = load i32* %p, align 4, !invariant.load !0
7; CHECK-NOT: %y = load
8entry:
9  %x = load i32* %p, align 4, !invariant.load !0
10  %conv = trunc i32 %x to i8
11  store i8 %conv, i8* %q, align 1
12  %y = load i32* %p, align 4, !invariant.load !0
13  %add = add i32 %y, 1
14  ret i32 %add
15}
16
17define i32 @test2(i32* nocapture %p, i8* nocapture %q) {
18; CHECK-LABEL: test2
19; CHECK-NOT: !invariant.load
20; CHECK-NOT: %y = load
21entry:
22  %x = load i32* %p, align 4
23  %conv = trunc i32 %x to i8
24  store i8 %conv, i8* %q, align 1
25  %y = load i32* %p, align 4, !invariant.load !0
26  %add = add i32 %y, 1
27  ret i32 %add
28}
29
30!0 = !{ }
31
32