xref: /llvm-project/llvm/test/Transforms/GVNHoist/hoist-inline.ll (revision 055fb7795aa219a3d274d280ec9129784f169f56)
1; RUN: opt -S -O2 -enable-gvn-hoist < %s | FileCheck %s
2
3; Check that the inlined loads are hoisted.
4; CHECK-LABEL: define i32 @fun(
5; CHECK-LABEL: entry:
6; CHECK: load i32, ptr @A
7; CHECK: if.then:
8
9@A = external global i32
10@B = external global i32
11@C = external global i32
12@D = external global i32
13@E = external global i32
14
15define i32 @loadA() {
16   %a = load i32, ptr @A
17   ret i32 %a
18}
19
20define i32 @fun(i1 %c) {
21entry:
22  br i1 %c, label %if.then, label %if.else
23
24if.then:
25  store i32 1, ptr @B
26  %call1 = call i32 @loadA()
27  store i32 2, ptr @C
28  br label %if.endif
29
30if.else:
31  store i32 2, ptr @D
32  %call2 = call i32 @loadA()
33  store i32 1, ptr @E
34  br label %if.endif
35
36if.endif:
37  %ret = phi i32 [ %call1, %if.then ], [ %call2, %if.else ]
38  ret i32 %ret
39}
40
41