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/*========================== begin_copyright_notice ============================
Copyright (C) 2021 Intel Corporation
SPDX-License-Identifier: MIT
============================= end_copyright_notice ===========================*/
#include "Compiler/FixInvalidFuncNamePass.hpp"
#include "IGCPassSupport.h"
#include "AdaptorCommon/ImplicitArgs.hpp"
#include "common/LLVMWarningsPush.hpp"
#include "llvm/IR/Function.h"
#include "common/LLVMWarningsPop.hpp"
using namespace llvm;
using namespace IGC;
// LLVM sometimes creates the function with characters which are incorrect for vISA (e.g. with ".")
// Here we check the LLVM names and replace incorrect characters for vISA to "_"
// We need to check call instruction. If contains invalid char, we change func name called by this instruction
class FixInvalidFuncName : public FunctionPass {
public:
FixInvalidFuncName() : FunctionPass(ID) {}
virtual bool runOnFunction(Function &F) override;
virtual llvm::StringRef getPassName() const override { return "Fix Invalid Func Name"; }
static char ID;
private:
// Replace invalid char to underscore
static std::string replaceInvalidCharToUnderline(std::string str);
};
char FixInvalidFuncName::ID = 0;
bool FixInvalidFuncName::runOnFunction(Function &F) {
bool modified = false;
for (inst_iterator I = inst_begin(F), E = inst_end(F); I != E; ++I) {
if (CallInst *callInst = dyn_cast<CallInst>(&(*I))) {
if (callInst->getCallingConv() == CallingConv::SPIR_FUNC) {
Function *func = callInst->getCalledFunction();
if (func) {
StringRef original = func->getName();
std::string changed = replaceInvalidCharToUnderline(original.str());
if (original != changed) {
func->setName(changed);
modified = true;
}
}
}
}
}
return modified;
}
std::string FixInvalidFuncName::replaceInvalidCharToUnderline(std::string str) {
std::replace(str.begin(), str.end(), '.', '_');
std::replace(str.begin(), str.end(), '$', '_');
return str;
}
namespace IGC {
#define PASS_FLAG "fix-invalid-func-name"
#define PASS_DESCRIPTION "Fix Invalid Func Name Pass"
#define PASS_CFG_ONLY false
#define PASS_ANALYSIS false
IGC_INITIALIZE_PASS_BEGIN(FixInvalidFuncName, PASS_FLAG, PASS_DESCRIPTION, PASS_CFG_ONLY, PASS_ANALYSIS)
IGC_INITIALIZE_PASS_END(FixInvalidFuncName, PASS_FLAG, PASS_DESCRIPTION, PASS_CFG_ONLY, PASS_ANALYSIS)
FunctionPass *createFixInvalidFuncNamePass() { return new FixInvalidFuncName(); }
} // namespace IGC
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