diff options
Diffstat (limited to 'instrumentation/split-compares-pass.so.cc')
| -rw-r--r-- | instrumentation/split-compares-pass.so.cc | 26 |
1 files changed, 20 insertions, 6 deletions
diff --git a/instrumentation/split-compares-pass.so.cc b/instrumentation/split-compares-pass.so.cc index 80cd90ba..b02a89fb 100644 --- a/instrumentation/split-compares-pass.so.cc +++ b/instrumentation/split-compares-pass.so.cc @@ -149,8 +149,11 @@ bool SplitComparesTransform::simplifyFPCompares(Module &M) { auto op1 = FcmpInst->getOperand(1); /* find out what the new predicate is going to be */ - auto pred = dyn_cast<CmpInst>(FcmpInst)->getPredicate(); + auto cmp_inst = dyn_cast<CmpInst>(FcmpInst); + if (!cmp_inst) { continue; } + auto pred = cmp_inst->getPredicate(); CmpInst::Predicate new_pred; + switch (pred) { case CmpInst::FCMP_UGE: @@ -276,8 +279,11 @@ bool SplitComparesTransform::simplifyCompares(Module &M) { auto op1 = IcmpInst->getOperand(1); /* find out what the new predicate is going to be */ - auto pred = dyn_cast<CmpInst>(IcmpInst)->getPredicate(); + auto cmp_inst = dyn_cast<CmpInst>(IcmpInst); + if (!cmp_inst) { continue; } + auto pred = cmp_inst->getPredicate(); CmpInst::Predicate new_pred; + switch (pred) { case CmpInst::ICMP_UGE: @@ -412,8 +418,11 @@ bool SplitComparesTransform::simplifyIntSignedness(Module &M) { IntegerType *IntType = IntegerType::get(C, bitw); /* get the new predicate */ - auto pred = dyn_cast<CmpInst>(IcmpInst)->getPredicate(); + auto cmp_inst = dyn_cast<CmpInst>(IcmpInst); + if (!cmp_inst) { continue; } + auto pred = cmp_inst->getPredicate(); CmpInst::Predicate new_pred; + if (pred == CmpInst::ICMP_SGT) { new_pred = CmpInst::ICMP_UGT; @@ -603,6 +612,10 @@ size_t SplitComparesTransform::splitFPCompares(Module &M) { if (op_size != op1->getType()->getPrimitiveSizeInBits()) { continue; } const unsigned int sizeInBits = op0->getType()->getPrimitiveSizeInBits(); + + // BUG FIXME TODO: u64 does not work for > 64 bit ... e.g. 80 and 128 bit + if (sizeInBits > 64) { continue; } + const unsigned int precision = sizeInBits == 32 ? 24 : sizeInBits == 64 ? 53 : sizeInBits == 128 ? 113 @@ -610,8 +623,7 @@ size_t SplitComparesTransform::splitFPCompares(Module &M) { : sizeInBits == 80 ? 65 : sizeInBits - 8; - const unsigned shiftR_exponent = precision - 1; - // BUG FIXME TODO: u64 does not work for > 64 bit ... e.g. 80 and 128 bit + const unsigned shiftR_exponent = precision - 1; const unsigned long long mask_fraction = (1ULL << (shiftR_exponent - 1)) | ((1ULL << (shiftR_exponent - 1)) - 1); const unsigned long long mask_exponent = @@ -1113,7 +1125,9 @@ size_t SplitComparesTransform::splitIntCompares(Module &M, unsigned bitw) { auto op0 = IcmpInst->getOperand(0); auto op1 = IcmpInst->getOperand(1); - auto pred = dyn_cast<CmpInst>(IcmpInst)->getPredicate(); + auto cmp_inst = dyn_cast<CmpInst>(IcmpInst); + if (!cmp_inst) { continue; } + auto pred = cmp_inst->getPredicate(); BasicBlock *end_bb = bb->splitBasicBlock(BasicBlock::iterator(IcmpInst)); |