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/*========================== begin_copyright_notice ============================
Copyright (C) 2017-2021 Intel Corporation
SPDX-License-Identifier: MIT
============================= end_copyright_notice ===========================*/
/*========================== begin_copyright_notice ============================
This file is distributed under the University of Illinois Open Source License.
See LICENSE.TXT for details.
============================= end_copyright_notice ===========================*/
#include "Compiler/ACLPrintfTranslation.h"
#include "Compiler/IGCPassSupport.h"
#include "Compiler/Optimizer/OCLBIUtils.h"
#include "Compiler/MetaDataApi/MetaDataApi.h"
#include "Compiler/MetaDataUtilsWrapper.h"
#include "common/LLVMWarningsPush.hpp"
#include <llvm/IR/Module.h>
#include <llvm/IR/Function.h>
#include "common/LLVMWarningsPop.hpp"
#include "Probe/Assertion.h"
using namespace llvm;
using namespace IGC;
// Register pass to igc-opt
#define PASS_FLAG "igc-translate-acl-printf"
#define PASS_DESCRIPTION "Translate ACL printf"
#define PASS_CFG_ONLY false
#define PASS_ANALYSIS false
IGC_INITIALIZE_PASS_BEGIN(ACLPrintfTranslation, PASS_FLAG, PASS_DESCRIPTION, PASS_CFG_ONLY, PASS_ANALYSIS)
IGC_INITIALIZE_PASS_DEPENDENCY(MetaDataUtilsWrapper)
IGC_INITIALIZE_PASS_END(ACLPrintfTranslation, PASS_FLAG, PASS_DESCRIPTION, PASS_CFG_ONLY, PASS_ANALYSIS)
char ACLPrintfTranslation::ID = 0;
ACLPrintfTranslation::ACLPrintfTranslation()
: ModulePass(ID)
{
initializeACLPrintfTranslationPass(*PassRegistry::getPassRegistry());
}
void ACLPrintfTranslation::visitCallInst(llvm::CallInst& CI)
{
Function* callee = CI.getCalledFunction();
if (!callee) return;
for (unsigned int i = 0; i < CI.getNumOperands(); i++)
{
Value* V = CI.getOperand(i);
// we found one printf function
if (V->getName().str() == "printf")
{
for (unsigned int i = 0; i < CI.getNumOperands(); i++)
{
Value* V = CI.getOperand(i);
const Type* T = V->getType();
// if the operand is a double
if (T && T->isDoubleTy())
{
// if it is a constant as in printf("%f", 10.5)
if (isa<ConstantFP>(V))
{
ConstantFP* C = (ConstantFP*)V;
const APFloat apf = C->getValueAPF();
Constant* newC = ConstantFP::get(Type::getFloatTy(V->getContext()), apf.convertToDouble());
CI.setOperand(i, newC);
}
// if it is the result of a function as in printf("%f", acospi(2.0f))
else if (isa<Instruction>(V))
{
Instruction* I = (Instruction*)V;
IGC_ASSERT(I->getNumOperands() == 1);
CI.setOperand(1, I->getOperand(0));
}
}
}
}
}
}
bool ACLPrintfTranslation::runOnModule(Module& M)
{
bool changed = false;
for (auto& funcIt : M.getFunctionList())
{
visit(funcIt);
}
return changed;
}
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