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Support vector casts in more places, fixing a variety of assertion

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failures.

To support this, add some utility functions to Type to help support
vector/scalar-independent code. Change ConstantInt::get and
ConstantFP::get to support vector types, and add an overload to
ConstantInt::get that uses a static IntegerType type, for
convenience.

Introduce a new getConstant method for ScalarEvolution, to simplify
common use cases.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73431 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman
2009-06-15 22:12:54 +00:00
parent 0d492bdf4d
commit 6de29f8d96
18 changed files with 497 additions and 259 deletions
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lib/Analysis/ScalarEvolution.cpp
+8 -3
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@@ -186,6 +186,11 @@ SCEVHandle ScalarEvolution::getConstant(const APInt& Val) {
return getConstant(ConstantInt::get(Val));
}
SCEVHandle
ScalarEvolution::getConstant(const Type *Ty, uint64_t V, bool isSigned) {
return getConstant(ConstantInt::get(cast<IntegerType>(Ty), V, isSigned));
}
const Type *SCEVConstant::getType() const { return V->getType(); }
void SCEVConstant::print(raw_ostream &OS) const {
@@ -2891,7 +2896,7 @@ ComputeLoadConstantCompareBackedgeTakenCount(LoadInst *LI, Constant *RHS,
unsigned MaxSteps = MaxBruteForceIterations;
for (unsigned IterationNum = 0; IterationNum != MaxSteps; ++IterationNum) {
ConstantInt *ItCst =
ConstantInt::get(IdxExpr->getType(), IterationNum);
ConstantInt::get(cast<IntegerType>(IdxExpr->getType()), IterationNum);
ConstantInt *Val = EvaluateConstantChrecAtConstant(IdxExpr, ItCst, *this);
// Form the GEP offset.
@@ -3086,7 +3091,7 @@ ComputeBackedgeTakenCountExhaustively(const Loop *L, Value *Cond, bool ExitWhen)
if (CondVal->getValue() == uint64_t(ExitWhen)) {
ConstantEvolutionLoopExitValue[PN] = PHIVal;
++NumBruteForceTripCountsComputed;
return getConstant(ConstantInt::get(Type::Int32Ty, IterationNum));
return getConstant(Type::Int32Ty, IterationNum);
}
// Compute the value of the PHI node for the next iteration.
@@ -3777,7 +3782,7 @@ SCEVHandle SCEVAddRecExpr::getNumIterationsInRange(ConstantRange Range,
// iteration exits.
unsigned BitWidth = SE.getTypeSizeInBits(getType());
if (!Range.contains(APInt(BitWidth, 0)))
return SE.getConstant(ConstantInt::get(getType(),0));
return SE.getIntegerSCEV(0, getType());
if (isAffine()) {
// If this is an affine expression then we have this situation: