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PR11662.

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Promotion of the mask operand needs to be done using PromoteTargetBoolean, and not padded with garbage.

llvm-svn: 147309
This commit is contained in:
Nadav Rotem 2011-12-28 13:08:20 +00:00
parent 9b4613ff14
commit d8c4880903
2 changed files with 25 additions and 1 deletions
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6
lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
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@ -489,7 +489,11 @@ SDValue DAGTypeLegalizer::PromoteIntRes_SELECT(SDNode *N) {
}
SDValue DAGTypeLegalizer::PromoteIntRes_VSELECT(SDNode *N) {
SDValue Mask = GetPromotedInteger(N->getOperand(0));
SDValue Mask = N->getOperand(0);
EVT OpTy = N->getOperand(1).getValueType();
// Promote all the way up to the canonical SetCC type.
Mask = PromoteTargetBoolean(Mask, TLI.getSetCCResultType(OpTy));
SDValue LHS = GetPromotedInteger(N->getOperand(1));
SDValue RHS = GetPromotedInteger(N->getOperand(2));
return DAG.getNode(ISD::VSELECT, N->getDebugLoc(),

20
test/CodeGen/X86/2011-12-28-vselecti8.ll Normal file
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@ -0,0 +1,20 @@
; RUN: llc < %s -mtriple=x86_64-apple-darwin -mcpu=corei7 | FileCheck %s
; ModuleID = '<stdin>'
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
target triple = "x86_64-apple-darwin11.2.0"
; CHECK: @foo8
; CHECK: psll
; CHECK: psraw
; CHECK: pblendvb
; CHECK: ret
define void @foo8(float* nocapture %RET) nounwind {
allocas:
%resultvec.i = select <8 x i1> <i1 false, i1 true, i1 false, i1 true, i1 false, i1 true, i1 false, i1 true>, <8 x i8> <i8 1, i8 2, i8 3, i8 4, i8 5, i8 6, i8 7, i8 8>, <8 x i8> <i8 100, i8 100, i8 100, i8 100, i8 100, i8 100, i8 100, i8 100>
%uint2float = uitofp <8 x i8> %resultvec.i to <8 x float>
%ptr = bitcast float * %RET to <8 x float> *
store <8 x float> %uint2float, <8 x float>* %ptr, align 4
ret void
}