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Fix PR2574: implement v2f32 scalar_to_vector.

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llvm-svn: 53927
This commit is contained in:
Evan Cheng 2008-07-22 18:39:19 +00:00
parent 12c36eae69
commit 901d469e05
2 changed files with 22 additions and 0 deletions
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7
lib/Target/X86/X86ISelLowering.cpp
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@ -601,6 +601,7 @@ X86TargetLowering::X86TargetLowering(X86TargetMachine &TM)
setOperationAction(ISD::VECTOR_SHUFFLE, MVT::v2i32, Custom);
setOperationAction(ISD::VECTOR_SHUFFLE, MVT::v1i64, Custom);
setOperationAction(ISD::SCALAR_TO_VECTOR, MVT::v2f32, Custom);
setOperationAction(ISD::SCALAR_TO_VECTOR, MVT::v8i8, Custom);
setOperationAction(ISD::SCALAR_TO_VECTOR, MVT::v4i16, Custom);
setOperationAction(ISD::SCALAR_TO_VECTOR, MVT::v1i64, Custom);
@ -4135,6 +4136,12 @@ X86TargetLowering::LowerINSERT_VECTOR_ELT(SDOperand Op, SelectionDAG &DAG) {
SDOperand
X86TargetLowering::LowerSCALAR_TO_VECTOR(SDOperand Op, SelectionDAG &DAG) {
if (Op.getValueType() == MVT::v2f32)
return DAG.getNode(ISD::BIT_CONVERT, MVT::v2f32,
DAG.getNode(ISD::SCALAR_TO_VECTOR, MVT::v2i32,
DAG.getNode(ISD::BIT_CONVERT, MVT::i32,
Op.getOperand(0))));
SDOperand AnyExt = DAG.getNode(ISD::ANY_EXTEND, MVT::i32, Op.getOperand(0));
MVT VT = MVT::v2i32;
switch (Op.getValueType().getSimpleVT()) {

15
test/CodeGen/X86/mmx-s2v.ll Normal file
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@ -0,0 +1,15 @@
; RUN: llvm-as < %s | llc -march=x86 -mattr=+mmx
; PR2574
define void @entry(i32 %m_task_id, i32 %start_x, i32 %end_x) {; <label>:0
br i1 true, label %bb.nph, label %._crit_edge
bb.nph: ; preds = %bb.nph, %0
%t2206f2.0 = phi <2 x float> [ %2, %bb.nph ], [ undef, %0 ] ; <<2 x float>> [#uses=1]
insertelement <2 x float> %t2206f2.0, float 0.000000e+00, i32 0 ; <<2 x float>>:1 [#uses=1]
insertelement <2 x float> %1, float 0.000000e+00, i32 1 ; <<2 x float>>:2 [#uses=1]
br label %bb.nph
._crit_edge: ; preds = %0
ret void
}