llvm-6502/test/Transforms/InstCombine/align-external.ll
Dan Gohman 004072508b Don't assume that external global variables are aligned at their preferred
alignment. Only the minimum alignment guaranteed by the ABI may be assumed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78668 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-11 15:50:03 +00:00

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540 B
LLVM

; RUN: llvm-as < %s | opt -instcombine | llvm-dis | FileCheck %s
; Don't assume that external global variables have their preferred
; alignment. They may only have the ABI minimum alignment.
; 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
target datalayout = "-i32:8:32"
@A = external global i32
@B = external global i32
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
}