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Avoid crashing on a variable-index insertelement with element type i16.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72991 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eli Friedman 2009-06-06 06:32:50 +00:00
parent b4a921af05
commit 30e71eb61b
2 changed files with 12 additions and 1 deletions
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2
lib/Target/X86/X86ISelLowering.cpp
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@ -4272,7 +4272,7 @@ X86TargetLowering::LowerINSERT_VECTOR_ELT(SDValue Op, SelectionDAG &DAG) {
SDValue N1 = Op.getOperand(1);
SDValue N2 = Op.getOperand(2);
if (EVT.getSizeInBits() == 16) {
if (EVT.getSizeInBits() == 16 && isa<ConstantSDNode>(N2)) {
// Transform it so it match pinsrw which expects a 16-bit value in a GR32
// as its second argument.
if (N1.getValueType() != MVT::i32)

11
test/CodeGen/X86/2009-06-05-VariableIndexInsert.ll Normal file
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@ -0,0 +1,11 @@
; RUN: llvm-as < %s | llc
define <2 x i64> @_mm_insert_epi16(<2 x i64> %a, i32 %b, i32 %imm) nounwind readnone {
entry:
%conv = bitcast <2 x i64> %a to <8 x i16> ; <<8 x i16>> [#uses=1]
%conv2 = trunc i32 %b to i16 ; <i16> [#uses=1]
%and = and i32 %imm, 7 ; <i32> [#uses=1]
%vecins = insertelement <8 x i16> %conv, i16 %conv2, i32 %and ; <<8 x i16>> [#uses=1]
%conv6 = bitcast <8 x i16> %vecins to <2 x i64> ; <<2 x i64>> [#uses=1]
ret <2 x i64> %conv6
}