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bugfix for optimization

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This commit is contained in:
hexcoder- 2019-09-23 22:25:44 +02:00
parent d13592aea0
commit 149b7d9ee8
1 changed files with 7 additions and 4 deletions
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11
llvm_mode/split-compares-pass.so.cc
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@ -585,29 +585,32 @@ size_t SplitComparesTransform::splitFPCompares(Module &M) {
m_e1 = BinaryOperator::Create(Instruction::And, t_e1, ConstantInt::get(t_e1->getType(), mask_exponent));
signequal_bb->getInstList().insert(signequal_bb->getTerminator()->getIterator(), m_e0);
signequal_bb->getInstList().insert(signequal_bb->getTerminator()->getIterator(), m_e1);
} else {
m_e0 = t_e0;
m_e1 = t_e1;
}
/* compare the exponents of the operands */
Instruction *icmp_exponent_result;
switch (FcmpInst->getPredicate()) {
case CmpInst::FCMP_OEQ:
icmp_exponent_result =
CmpInst::Create(Instruction::ICmp, CmpInst::ICMP_EQ, t_e0, t_e1);
CmpInst::Create(Instruction::ICmp, CmpInst::ICMP_EQ, m_e0, m_e1);
break;
case CmpInst::FCMP_ONE:
case CmpInst::FCMP_UNE:
icmp_exponent_result =
CmpInst::Create(Instruction::ICmp, CmpInst::ICMP_NE, t_e0, t_e1);
CmpInst::Create(Instruction::ICmp, CmpInst::ICMP_NE, m_e0, m_e1);
break;
case CmpInst::FCMP_OGT:
Instruction *icmp_exponent;
icmp_exponent =
CmpInst::Create(Instruction::ICmp, CmpInst::ICMP_UGT, t_e0, t_e1);
CmpInst::Create(Instruction::ICmp, CmpInst::ICMP_UGT, m_e0, m_e1);
signequal_bb->getInstList().insert(signequal_bb->getTerminator()->getIterator(), icmp_exponent);
icmp_exponent_result = BinaryOperator::Create(Instruction::Xor, icmp_exponent, t_s0);
break;
case CmpInst::FCMP_OLT:
icmp_exponent =
CmpInst::Create(Instruction::ICmp, CmpInst::ICMP_ULT, t_e0, t_e1);
CmpInst::Create(Instruction::ICmp, CmpInst::ICMP_ULT, m_e0, m_e1);
signequal_bb->getInstList().insert(signequal_bb->getTerminator()->getIterator(), icmp_exponent);
icmp_exponent_result = BinaryOperator::Create(Instruction::Xor, icmp_exponent, t_s0);
break;