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The backend already pattern matches to form VBSL when it can. We may want to teach it to use the vbsl intrinsics at some point to prevent machine licm from mucking with this, but using the Expand is completely correct. http://llvm.org/bugs/show_bug.cgi?id=13831 http://llvm.org/bugs/show_bug.cgi?id=13961 Patch by Peter Couperus <peter.couperus@st.com>. llvm-svn: 165845
13 lines
449 B
LLVM
13 lines
449 B
LLVM
; RUN: llc < %s -march=arm -mattr=+neon | FileCheck %s
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; Make sure that ARM backend with NEON handles vselect.
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define void @vmax_v4i32(<4 x i32>* %m, <4 x i32> %a, <4 x i32> %b) {
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; CHECK: vcgt.s32 [[QR:q[0-9]+]], [[Q1:q[0-9]+]], [[Q2:q[0-9]+]]
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; CHECK: vbsl [[QR]], [[Q1]], [[Q2]]
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%cmpres = icmp sgt <4 x i32> %a, %b
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%maxres = select <4 x i1> %cmpres, <4 x i32> %a, <4 x i32> %b
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store <4 x i32> %maxres, <4 x i32>* %m
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ret void
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}
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