1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
|
/*========================== begin_copyright_notice ============================
Copyright (C) 2017-2021 Intel Corporation
SPDX-License-Identifier: MIT
============================= end_copyright_notice ===========================*/
#pragma once
#include "Compiler/CodeGenContextWrapper.hpp"
#include "common/LLVMWarningsPush.hpp"
#include <llvm/Pass.h>
#include <llvm/IR/InstVisitor.h>
#include <llvm/ADT/DenseSet.h>
#include "common/LLVMWarningsPop.hpp"
namespace IGC
{
/// @brief This pass unset fast math flag on all instructions which influence position output
class PositionDepAnalysis : public llvm::FunctionPass, public llvm::InstVisitor<PositionDepAnalysis>
{
public:
/// @brief Pass identification.
static char ID;
PositionDepAnalysis();
~PositionDepAnalysis() {}
void visitCallInst(llvm::CallInst& I);
virtual llvm::StringRef getPassName() const override
{
return "SetMathPrecisionForPositionOutput";
}
virtual bool runOnFunction(llvm::Function& F) override;
virtual void getAnalysisUsage(llvm::AnalysisUsage& AU) const override
{
AU.setPreservesAll();
AU.addRequired<CodeGenContextWrapper>();
}
bool PositionDependsOnInst(llvm::Instruction* inst);
private:
void UpdateDependency(llvm::Instruction* inst);
llvm::DenseSet<llvm::Instruction*> m_PositionDep;
};
} // namespace IGC
|
