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Add an option to always emit realignment code for a particular module.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110404 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eric Christopher
2010-08-05 23:57:43 +00:00
parent f67202c94d
commit e74a088d92
2 changed files with 55 additions and 1 deletions
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21
test/CodeGen/X86/force-align-stack.ll Normal file
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; RUN: llc < %s -relocation-model=static -force-align-stack | FileCheck %s
; Tests to make sure that we always align the stack out to the minimum needed -
; in this case 16-bytes.
target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128-n8:16:32"
target triple = "i386-apple-darwin10.3"
define void @a() nounwind ssp {
entry:
; CHECK: _a:
; CHECK: andl $-16, %esp
%z = alloca <16 x i8> ; <<16 x i8>*> [#uses=2]
%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
store <16 x i8> zeroinitializer, <16 x i8>* %z, align 16
call void @b(<16 x i8>* %z) nounwind
br label %return
return: ; preds = %entry
ret void
}
declare void @b(<16 x i8>*)