1; RUN: opt < %s -instcombine -S | FileCheck %s
2
3; Don't assume that external global variables or those with weak linkage have
4; their preferred alignment. They may only have the ABI minimum alignment.
5
6target datalayout = "i32:8:32"
7
8@A = external global i32
9@B = weak_odr global i32 0
10
11@C = available_externally global <4 x i32> zeroinitializer, align 4
12; CHECK: @C = available_externally global <4 x i32> zeroinitializer, align 4
13
14define i64 @foo(i64 %a) {
15  %t = ptrtoint i32* @A to i64
16  %s = shl i64 %a, 3
17  %r = or i64 %t, %s
18  %q = add i64 %r, 1
19  ret i64 %q
20}
21
22; CHECK-LABEL: define i64 @foo(i64 %a)
23; CHECK: %s = shl i64 %a, 3
24; CHECK: %r = or i64 %s, ptrtoint (i32* @A to i64)
25; CHECK: %q = add i64 %r, 1
26; CHECK: ret i64 %q
27
28define i32 @bar() {
29  %r = load i32, i32* @B, align 1
30  ret i32 %r
31}
32
33; CHECK-LABEL: @bar()
34; CHECK: align 1
35
36define void @vec_store() {
37  store <4 x i32> <i32 0, i32 1, i32 2, i32 3>, <4 x i32>* @C, align 4
38  ret void
39}
40; CHECK: define void @vec_store()
41; CHECK: store <4 x i32> <i32 0, i32 1, i32 2, i32 3>, <4 x i32>* @C, align 4
42