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4002a1b6f1
a memset using 16-byte XMM stores, but where the stack realignment code didn't work. Until it does (PR2962) disable use of xmm regs in memcpy and memset formation for linux and other targets with insufficiently aligned stacks. This is part of PR2888 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58317 91177308-0d34-0410-b5e6-96231b3b80d8
23 lines
862 B
LLVM
23 lines
862 B
LLVM
; Linux doesn't support stack realignment for functions with allocas (PR2888).
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; Until it does, we shouldn't use movaps to access the stack. On targets with
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; sufficiently aligned stack (e.g. darwin) we should.
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; RUN: llvm-as < %s | llc -mtriple=i386-pc-linux-gnu -mcpu=yonah | not grep movaps
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; RUN: llvm-as < %s | llc -mtriple=i686-apple-darwin9 -mcpu=yonah | grep movaps | count 2
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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-f80:32:32"
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target triple = "i386-pc-linux-gnu"
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define void @foo(i32 %t) nounwind {
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%tmp1210 = alloca i8, i32 32, align 4
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call void @llvm.memset.i64(i8* %tmp1210, i8 0, i64 32, i32 4)
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%x = alloca i8, i32 %t
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call void @dummy(i8* %x)
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ret void
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}
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declare void @dummy(i8* %x)
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declare void @llvm.memset.i64(i8*, i8, i64, i32) nounwind
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