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For PR950:

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This patch replaces signed integer types with signless ones:
1. [US]Byte -> Int8
2. [U]Short -> Int16
3. [U]Int   -> Int32
4. [U]Long  -> Int64.
5. Removal of isSigned, isUnsigned, getSignedVersion, getUnsignedVersion
   and other methods related to signedness. In a few places this warranted
   identifying the signedness information from other sources.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32785 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reid Spencer
2006-12-31 05:48:39 +00:00
parent 05e52a1b35
commit c5b206b6be
32 changed files with 400 additions and 521 deletions
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12
lib/Transforms/Scalar/LoopStrengthReduce.cpp
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@ -86,8 +86,8 @@ namespace {
Value *IncV;
IVExpr()
: Stride(SCEVUnknown::getIntegerSCEV(0, Type::UIntTy)),
Base (SCEVUnknown::getIntegerSCEV(0, Type::UIntTy)) {}
: Stride(SCEVUnknown::getIntegerSCEV(0, Type::Int32Ty)),
Base (SCEVUnknown::getIntegerSCEV(0, Type::Int32Ty)) {}
IVExpr(const SCEVHandle &stride, const SCEVHandle &base, PHINode *phi,
Value *incv)
: Stride(stride), Base(base), PHI(phi), IncV(incv) {}
@ -334,12 +334,6 @@ static bool getSCEVStartAndStride(const SCEVHandle &SH, Loop *L,
<< "] Variable stride: " << *AddRec << "\n";
Stride = AddRec->getOperand(1);
// Check that all constant strides are the unsigned type, we don't want to
// have two IV's one of signed stride 4 and one of unsigned stride 4 to not be
// merged.
assert((!isa<SCEVConstant>(Stride) || Stride->getType()->isUnsigned()) &&
"Constants should be canonicalized to unsigned!");
return true;
}
@ -899,7 +893,7 @@ unsigned LoopStrengthReduce::CheckForIVReuse(const SCEVHandle &Stride,
if (unsigned(abs(SInt)) < Scale || (SInt % Scale) != 0)
continue;
std::map<SCEVHandle, IVsOfOneStride>::iterator SI =
IVsByStride.find(SCEVUnknown::getIntegerSCEV(SInt/Scale, Type::UIntTy));
IVsByStride.find(SCEVUnknown::getIntegerSCEV(SInt/Scale, Type::Int32Ty));
if (SI == IVsByStride.end())
continue;
for (std::vector<IVExpr>::iterator II = SI->second.IVs.begin(),