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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
27 lines
914 B
LLVM
27 lines
914 B
LLVM
; RUN: llc -mtriple=x86_64-pc-linux -stackrealign -stack-alignment=32 < %s | FileCheck %s
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; RUN: llc -mtriple=x86_64-pc-linux-gnux32 -stackrealign -stack-alignment=32 < %s | FileCheck -check-prefix=X32ABI %s
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; This should run with NaCl as well ( -mtriple=x86_64-pc-nacl ) but currently doesn't due to PR22655
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; Make sure the correct register gets set up as the base pointer
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; This should be rbx for x64 and 64-bit NaCl and ebx for x32
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; CHECK-LABEL: base
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; CHECK: subq $32, %rsp
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; CHECK: movq %rsp, %rbx
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; X32ABI-LABEL: base
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; X32ABI: subl $32, %esp
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; X32ABI: movl %esp, %ebx
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; NACL-LABEL: base
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; NACL: subq $32, %rsp
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; NACL: movq %rsp, %rbx
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declare i32 @helper() nounwind
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define void @base() #0 {
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entry:
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%k = call i32 @helper()
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%a = alloca i32, i32 %k, align 4
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store i32 0, i32* %a, align 4
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ret void
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}
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attributes #0 = { nounwind uwtable "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf"}
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