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/*========================== begin_copyright_notice ============================
Copyright (C) 2023 Intel Corporation
SPDX-License-Identifier: MIT
============================= end_copyright_notice ===========================*/
#ifndef GENXGLOBALUNIFORM_H
#define GENXGLOBALUNIFORM_H
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/DenseSet.h"
#include "llvm/Analysis/PostDominators.h"
#include "llvm/IR/Function.h"
#include "llvm/Pass.h"
#include "Probe/Assertion.h"
#include "llvmWrapper/IR/InstrTypes.h"
namespace llvm {
class GenXGlobalUniformAnalysis : public FunctionPass {
public:
static char ID;
explicit GenXGlobalUniformAnalysis() : FunctionPass(ID) {}
StringRef getPassName() const override {
return "GenX global uniform analysis";
}
void getAnalysisUsage(AnalysisUsage &AU) const override;
bool runOnFunction(Function &F) override;
void releaseMemory() override { m_Divergent.clear(); }
void print(raw_ostream &OS) const;
bool isUniform(BasicBlock &BB) const {
IGC_ASSERT(BB.getParent() == F);
return m_Divergent.find(&BB) == m_Divergent.end();
}
private:
Function *F = nullptr;
PostDominatorTree *PDT = nullptr;
DenseSet<BasicBlock *> m_Divergent;
void analyzeDivergentCFG(IGCLLVM::TerminatorInst *Inst);
};
void initializeGenXGlobalUniformAnalysisPass(PassRegistry &);
} // end namespace llvm
#endif // GENXGLOBALUNIFORM_H
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