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Reapply r60997, this time without forgetting that

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target constants are allowed to have an illegal
type.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61006 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan Sands
2008-12-14 09:43:15 +00:00
parent 3c8da59482
commit b6862bbe34
3 changed files with 15 additions and 8 deletions
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17
lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
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@@ -51,6 +51,7 @@ namespace {
class VISIBILITY_HIDDEN SelectionDAGLegalize {
TargetLowering &TLI;
SelectionDAG &DAG;
bool TypesNeedLegalizing;
// Libcall insertion helpers.
@@ -127,7 +128,7 @@ class VISIBILITY_HIDDEN SelectionDAGLegalize {
}
public:
explicit SelectionDAGLegalize(SelectionDAG &DAG);
explicit SelectionDAGLegalize(SelectionDAG &DAG, bool TypesNeedLegalizing);
/// getTypeAction - Return how we should legalize values of this type, either
/// it is already legal or we need to expand it into multiple registers of
@@ -348,8 +349,8 @@ SDNode *SelectionDAGLegalize::isShuffleLegal(MVT VT, SDValue Mask) const {
return TLI.isShuffleMaskLegal(Mask, VT) ? Mask.getNode() : 0;
}
SelectionDAGLegalize::SelectionDAGLegalize(SelectionDAG &dag)
: TLI(dag.getTargetLoweringInfo()), DAG(dag),
SelectionDAGLegalize::SelectionDAGLegalize(SelectionDAG &dag, bool types)
: TLI(dag.getTargetLoweringInfo()), DAG(dag), TypesNeedLegalizing(types),
ValueTypeActions(TLI.getValueTypeActions()) {
assert(MVT::LAST_VALUETYPE <= 32 &&
"Too many value types for ValueTypeActions to hold!");
@@ -488,6 +489,12 @@ bool SelectionDAGLegalize::LegalizeAllNodesNotLeadingTo(SDNode *N, SDNode *Dest,
/// appropriate for its type.
void SelectionDAGLegalize::HandleOp(SDValue Op) {
MVT VT = Op.getValueType();
// If the type legalizer was run then we should never see any illegal result
// types here except for target constants (the type legalizer does not touch
// those).
assert((TypesNeedLegalizing || getTypeAction(VT) == Legal ||
Op.getOpcode() == ISD::TargetConstant) &&
"Illegal type introduced after type legalization?");
switch (getTypeAction(VT)) {
default: assert(0 && "Bad type action!");
case Legal: (void)LegalizeOp(Op); break;
@@ -8602,9 +8609,9 @@ SDValue SelectionDAGLegalize::StoreWidenVectorOp(StoreSDNode *ST,
// SelectionDAG::Legalize - This is the entry point for the file.
//
void SelectionDAG::Legalize() {
void SelectionDAG::Legalize(bool TypesNeedLegalizing) {
/// run - This is the main entry point to this class.
///
SelectionDAGLegalize(*this).LegalizeDAG();
SelectionDAGLegalize(*this, TypesNeedLegalizing).LegalizeDAG();
}