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Fix the result type of X86's truncate to i8.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53688 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2008-07-16 16:20:48 +00:00
parent 7a9a5af6a0
commit 2fbdf0e711
1 changed files with 3 additions and 5 deletions
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8
lib/Target/X86/X86ISelDAGToDAG.cpp
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@ -1120,19 +1120,17 @@ SDNode *X86DAGToDAGISel::getTruncate(SDOperand N0, MVT VT) {
// Ensure that the source register has an 8-bit subreg on 32-bit targets
if (!Subtarget->is64Bit()) {
unsigned Opc;
MVT VT;
switch (N0.getValueType().getSimpleVT()) {
MVT N0VT = N0.getValueType();
switch (N0VT.getSimpleVT()) {
default: assert(0 && "Unknown truncate!");
case MVT::i16:
Opc = X86::MOV16to16_;
VT = MVT::i16;
break;
case MVT::i32:
Opc = X86::MOV32to32_;
VT = MVT::i32;
break;
}
N0 = SDOperand(CurDAG->getTargetNode(Opc, VT, MVT::Flag, N0), 0);
N0 = SDOperand(CurDAG->getTargetNode(Opc, N0VT, MVT::Flag, N0), 0);
return CurDAG->getTargetNode(X86::EXTRACT_SUBREG,
VT, N0, SRIdx, N0.getValue(1));
}