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Add sanity checking for BUILD_PAIR (I noticed the

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other day that PPC custom lowering could create
a BUILD_PAIR of two f64 with a result type of...
f64! - already fixed).  Fix a place that triggers
the sanity check.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58378 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan Sands 2008-10-29 14:22:20 +00:00
parent 5489893867
commit d22ec5f628
3 changed files with 42 additions and 7 deletions
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18
include/llvm/CodeGen/ValueTypes.h
View File

@ -142,6 +142,24 @@ namespace llvm {
inline bool operator== (const MVT VT) const { return V == VT.V; }
inline bool operator!= (const MVT VT) const { return V != VT.V; }
/// getFloatingPointVT - Returns the MVT that represents a floating point
/// type with the given number of bits. There are two floating point types
/// with 128 bits - this returns f128 rather than ppcf128.
static inline MVT getFloatingPointVT(unsigned BitWidth) {
switch (BitWidth) {
default:
assert(false && "Bad bit width!");
case 32:
return f32;
case 64:
return f64;
case 80:
return f80;
case 128:
return f128;
}
}
/// getIntegerVT - Returns the MVT that represents an integer with the given
/// number of bits.
static inline MVT getIntegerVT(unsigned BitWidth) {

22
lib/CodeGen/SelectionDAG/SelectionDAG.cpp
View File

@ -758,11 +758,25 @@ void SelectionDAG::VerifyNode(SDNode *N) {
switch (N->getOpcode()) {
default:
break;
case ISD::BUILD_PAIR: {
MVT VT = N->getValueType(0);
assert(N->getNumValues() == 1 && "Too many results!");
assert(!VT.isVector() && (VT.isInteger() || VT.isFloatingPoint()) &&
"Wrong return type!");
assert(N->getNumOperands() == 2 && "Wrong number of operands!");
assert(N->getOperand(0).getValueType() == N->getOperand(1).getValueType() &&
"Mismatched operand types!");
assert(N->getOperand(0).getValueType().isInteger() == VT.isInteger() &&
"Wrong operand type!");
assert(VT.getSizeInBits() == 2 * N->getOperand(0).getValueSizeInBits() &&
"Wrong return type size");
break;
}
case ISD::BUILD_VECTOR: {
assert(N->getNumValues() == 1 && "Too many results for BUILD_VECTOR!");
assert(N->getValueType(0).isVector() && "Wrong BUILD_VECTOR return type!");
assert(N->getNumValues() == 1 && "Too many results!");
assert(N->getValueType(0).isVector() && "Wrong return type!");
assert(N->getNumOperands() == N->getValueType(0).getVectorNumElements() &&
"Wrong number of BUILD_VECTOR operands!");
"Wrong number of operands!");
// FIXME: Change vector_shuffle to a variadic node with mask elements being
// operands of the node. Currently the mask is a BUILD_VECTOR passed as an
// operand, and it is not always possible to legalize it. Turning off the
@ -770,7 +784,7 @@ void SelectionDAG::VerifyNode(SDNode *N) {
// MVT EltVT = N->getValueType(0).getVectorElementType();
// for (SDNode::op_iterator I = N->op_begin(), E = N->op_end(); I != E; ++I)
// assert(I->getSDValue().getValueType() == EltVT &&
// "Wrong BUILD_VECTOR operand type!");
// "Wrong operand type!");
break;
}
}

9
lib/CodeGen/SelectionDAG/SelectionDAGBuild.cpp
View File

@ -390,14 +390,17 @@ static SDValue getCopyFromParts(SelectionDAG &DAG,
ValueVT : MVT::getIntegerVT(RoundBits);
SDValue Lo, Hi;
MVT HalfVT = ValueVT.isInteger() ?
MVT::getIntegerVT(RoundBits/2) :
MVT::getFloatingPointVT(RoundBits/2);
if (RoundParts > 2) {
MVT HalfVT = MVT::getIntegerVT(RoundBits/2);
Lo = getCopyFromParts(DAG, Parts, RoundParts/2, PartVT, HalfVT);
Hi = getCopyFromParts(DAG, Parts+RoundParts/2, RoundParts/2,
PartVT, HalfVT);
} else {
Lo = Parts[0];
Hi = Parts[1];
Lo = DAG.getNode(ISD::BIT_CONVERT, HalfVT, Parts[0]);
Hi = DAG.getNode(ISD::BIT_CONVERT, HalfVT, Parts[1]);
}
if (TLI.isBigEndian())
std::swap(Lo, Hi);