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PowerPC: Expand VSELECT nodes.

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There's probably a better expansion for those nodes than the default for
altivec, but this is better than crashing. VSELECTs occur in loop vectorizer
output.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170551 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Benjamin Kramer 2012-12-19 15:49:14 +00:00
parent c698d3a2a4
commit 91223a41ef
2 changed files with 8 additions and 0 deletions
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1
lib/Target/PowerPC/PPCISelLowering.cpp
View File

@ -376,6 +376,7 @@ PPCTargetLowering::PPCTargetLowering(PPCTargetMachine &TM)
setOperationAction(ISD::CTLZ_ZERO_UNDEF, VT, Expand); setOperationAction(ISD::CTLZ_ZERO_UNDEF, VT, Expand);
setOperationAction(ISD::CTTZ, VT, Expand); setOperationAction(ISD::CTTZ, VT, Expand);
setOperationAction(ISD::CTTZ_ZERO_UNDEF, VT, Expand); setOperationAction(ISD::CTTZ_ZERO_UNDEF, VT, Expand);
setOperationAction(ISD::VSELECT, VT, Expand);
setOperationAction(ISD::SIGN_EXTEND_INREG, VT, Expand); setOperationAction(ISD::SIGN_EXTEND_INREG, VT, Expand);
for (unsigned j = (unsigned)MVT::FIRST_VECTOR_VALUETYPE; for (unsigned j = (unsigned)MVT::FIRST_VECTOR_VALUETYPE;

7
test/CodeGen/PowerPC/vec_select.ll Normal file
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@ -0,0 +1,7 @@
; RUN: llc < %s -mtriple=powerpc64-linux-gnu -mattr=+altivec | FileCheck %s
; CHECK: vsel_float
define <4 x float> @vsel_float(<4 x float> %v1, <4 x float> %v2) {
%vsel = select <4 x i1> <i1 true, i1 false, i1 false, i1 false>, <4 x float> %v1, <4 x float> %v2
ret <4 x float> %vsel
}