align-external.ll
1.04 KB
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; RUN: opt < %s -instcombine -S | FileCheck %s
; Don't assume that external global variables or those with weak linkage have
; their preferred alignment. They may only have the ABI minimum alignment.
target datalayout = "i32:8:32"
@A = external global i32
@B = weak_odr global i32 0
@C = available_externally global <4 x i32> zeroinitializer, align 4
; CHECK: @C = available_externally global <4 x i32> zeroinitializer, align 4
define i64 @foo(i64 %a) {
%t = ptrtoint i32* @A to i64
%s = shl i64 %a, 3
%r = or i64 %t, %s
%q = add i64 %r, 1
ret i64 %q
}
; CHECK-LABEL: define i64 @foo(i64 %a)
; CHECK: %s = shl i64 %a, 3
; CHECK: %r = or i64 %s, ptrtoint (i32* @A to i64)
; CHECK: %q = add i64 %r, 1
; CHECK: ret i64 %q
define i32 @bar() {
%r = load i32, i32* @B, align 1
ret i32 %r
}
; CHECK-LABEL: @bar()
; CHECK: align 1
define void @vec_store() {
store <4 x i32> <i32 0, i32 1, i32 2, i32 3>, <4 x i32>* @C, align 4
ret void
}
; CHECK: define void @vec_store()
; CHECK: store <4 x i32> <i32 0, i32 1, i32 2, i32 3>, <4 x i32>* @C, align 4