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avoid floatSemantics, not available in LLVM 3.8.0

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This commit is contained in:
hexcoder-
2019-09-23 21:57:38 +02:00
parent e36e5f4fc9
commit 59d4b0aadb
1 changed files with 15 additions and 16 deletions
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31
llvm_mode/split-compares-pass.so.cc
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@ -22,7 +22,6 @@
#include "llvm/Transforms/Utils/BasicBlockUtils.h"
#include "llvm/IR/Verifier.h"
#include "llvm/IR/Module.h"
#include "llvm/ADT/APFloat.h"
#include "llvm/IR/IRBuilder.h"
@ -497,9 +496,12 @@ size_t SplitComparesTransform::splitFPCompares(Module &M) {
continue;
}
const unsigned int precision = llvm::APFloatBase::semanticsPrecision(op0->getType()->getFltSemantics());
const unsigned int sizeInBits = llvm::APFloatBase::semanticsSizeInBits(op0->getType()->getFltSemantics());
const unsigned int sizeInBits = op0->getType()->getPrimitiveSizeInBits();
const unsigned int precision = sizeInBits == 32 ? 24 :
sizeInBits == 64 ? 53 :
sizeInBits == 128 ? 113 :
sizeInBits == 16 ? 11 :
65;
const unsigned shiftR_exponent = precision - 1;
const unsigned long long mask_fraction = ((1 << (precision - 2))) | ((1 << (precision - 2)) - 1);
@ -573,20 +575,17 @@ size_t SplitComparesTransform::splitFPCompares(Module &M) {
signequal_bb->getInstList().insert(signequal_bb->getTerminator()->getIterator(), s_e0);
signequal_bb->getInstList().insert(signequal_bb->getTerminator()->getIterator(), s_e1);
if (sizeInBits - precision < exTySizeBytes * 8) {
m_e0 = BinaryOperator::Create(Instruction::And, s_e0, ConstantInt::get(s_e0->getType(), mask_exponent));
m_e1 = BinaryOperator::Create(Instruction::And, s_e1, ConstantInt::get(s_e1->getType(), mask_exponent));
signequal_bb->getInstList().insert(signequal_bb->getTerminator()->getIterator(), m_e0);
signequal_bb->getInstList().insert(signequal_bb->getTerminator()->getIterator(), m_e1);
t_e0 = new TruncInst(m_e0, IntExponentTy);
t_e1 = new TruncInst(m_e1, IntExponentTy);
} else {
t_e0 = new TruncInst(s_e0, IntExponentTy);
t_e1 = new TruncInst(s_e1, IntExponentTy);
}
t_e0 = new TruncInst(s_e0, IntExponentTy);
t_e1 = new TruncInst(s_e1, IntExponentTy);
signequal_bb->getInstList().insert(signequal_bb->getTerminator()->getIterator(), t_e0);
signequal_bb->getInstList().insert(signequal_bb->getTerminator()->getIterator(), t_e1);
if (sizeInBits - precision < exTySizeBytes * 8) {
m_e0 = BinaryOperator::Create(Instruction::And, t_e0, ConstantInt::get(t_e0->getType(), mask_exponent));
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);
}
/* compare the exponents of the operands */
Instruction *icmp_exponent_result;
switch (FcmpInst->getPredicate()) {