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a71c14303e
realignment should be forced. With this commit, we can now force stack realignment when doing LTO and do so on a per-function basis. Also, add a new cl::opt option "stackrealign" to CommandFlags.h which is used to force stack realignment via llc's command line. Out-of-tree projects currently using -force-align-stack to force stack realignment should make changes to attach the attribute to the functions in the IR. Differential Revision: http://reviews.llvm.org/D11814 llvm-svn: 247450
22 lines
818 B
LLVM
22 lines
818 B
LLVM
; RUN: llc < %s -relocation-model=static -stackrealign | FileCheck %s
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; Tests to make sure that we always align the stack out to the minimum needed -
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; in this case 16-bytes.
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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"
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target triple = "i386-apple-darwin10.3"
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define void @a() nounwind ssp {
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entry:
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; CHECK: _a:
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; CHECK: andl $-16, %esp
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%z = alloca <16 x i8> ; <<16 x i8>*> [#uses=2]
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%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
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store <16 x i8> zeroinitializer, <16 x i8>* %z, align 16
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call void @b(<16 x i8>* %z) nounwind
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br label %return
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return: ; preds = %entry
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ret void
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}
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declare void @b(<16 x i8>*)
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