Add a regression test for x86-64 red zone usage.
llvm-svn: 63075
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; RUN: llvm-as < %s | llc -march=x86-64 > %t
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; RUN: not grep subq %t
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; RUN: not grep addq %t
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; RUN: grep {\\-4(%%rsp)} %t | count 2
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; RUN: llvm-as < %s | llc -march=x86-64 -disable-red-zone > %t
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; RUN: grep subq %t | count 1
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; RUN: grep addq %t | count 1
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define x86_fp80 @f0(float %f) nounwind readnone {
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entry:
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%0 = fpext float %f to x86_fp80 ; <x86_fp80> [#uses=1]
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ret x86_fp80 %0
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}
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