RPCS3/llvm-mirror
1
0
Fork 0
mirror of https://github.com/RPCS3/llvm-mirror.git synced 2025-01-16 08:29:08 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Minor code simplifications. Don't attempt LSR on theoretical

Browse Source 
targets with pointers larger than 64 bits, due to the code not
yet being APInt clean.

llvm-svn: 69296
This commit is contained in:
Dan Gohman 2009-04-16 16:49:48 +00:00
parent 67ad4ee457
commit f2bec6720f
1 changed files with 6 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
lib/Transforms/Scalar/LoopStrengthReduce.cpp
View File

@ -489,8 +489,7 @@ bool LoopStrengthReduce::AddUsersIfInteresting(Instruction *I, Loop *L,
return false; // Void and FP expressions cannot be reduced.
// LSR is not APInt clean, do not touch integers bigger than 64-bits.
if (I->getType()->isInteger() &&
I->getType()->getPrimitiveSizeInBits() > 64)
if (TD->getTypeSizeInBits(I->getType()) > 64)
return false;
if (!Processed.insert(I))
@ -2075,16 +2074,11 @@ ICmpInst *LoopStrengthReduce::ChangeCompareStride(Loop *L, ICmpInst *Cond,
if (RequiresTypeConversion(NewCmpTy, CmpTy)) {
// Check if it is possible to rewrite it using
// an iv / stride of a smaller integer type.
bool TruncOk = false;
if (NewCmpTy->isInteger()) {
unsigned Bits = NewTyBits;
if (ICmpInst::isSignedPredicate(Predicate))
--Bits;
uint64_t Mask = (1ULL << Bits) - 1;
if (((uint64_t)NewCmpVal & Mask) == (uint64_t)NewCmpVal)
TruncOk = true;
}
if (!TruncOk)
unsigned Bits = NewTyBits;
if (ICmpInst::isSignedPredicate(Predicate))
--Bits;
uint64_t Mask = (1ULL << Bits) - 1;
if (((uint64_t)NewCmpVal & Mask) != (uint64_t)NewCmpVal)
continue;
}