mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2025-10-31 08:16:47 +00:00
1b279144ec
utils/sort_includes.py. I clearly haven't done this in a while, so more changed than usual. This even uncovered a missing include from the InstrProf library that I've added. No functionality changed here, just mechanical cleanup of the include order. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225974 91177308-0d34-0410-b5e6-96231b3b80d8
72 lines
2.5 KiB
C++
72 lines
2.5 KiB
C++
//===-- JumpInstrTableInfo.h: Info for Jump-Instruction Tables --*- C++ -*-===//
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
///
|
|
/// \file
|
|
/// \brief Information about jump-instruction tables that have been created by
|
|
/// JumpInstrTables pass.
|
|
///
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_ANALYSIS_JUMPINSTRTABLEINFO_H
|
|
#define LLVM_ANALYSIS_JUMPINSTRTABLEINFO_H
|
|
|
|
#include "llvm/ADT/DenseMap.h"
|
|
#include "llvm/Pass.h"
|
|
#include <vector>
|
|
|
|
namespace llvm {
|
|
class Function;
|
|
class FunctionType;
|
|
|
|
/// This class stores information about jump-instruction tables created by the
|
|
/// JumpInstrTables pass (in lib/CodeGen/JumpInstrTables.cpp). Each table is a
|
|
/// map from a function type to a vector of pairs. The first element of each
|
|
/// pair is the function that has the jumptable annotation. The second element
|
|
/// is a function that was declared by JumpInstrTables and used to replace all
|
|
/// address-taking sites for the original function.
|
|
///
|
|
/// The information in this pass is used in AsmPrinter
|
|
/// (lib/CodeGen/AsmPrinter/AsmPrinter.cpp) to generate the required assembly
|
|
/// for the jump-instruction tables.
|
|
class JumpInstrTableInfo : public ImmutablePass {
|
|
public:
|
|
static char ID;
|
|
|
|
/// The default byte alignment for jump tables is 16, which is large but
|
|
/// usually safe.
|
|
JumpInstrTableInfo(uint64_t ByteAlign = 16);
|
|
virtual ~JumpInstrTableInfo();
|
|
const char *getPassName() const override {
|
|
return "Jump-Instruction Table Info";
|
|
}
|
|
|
|
typedef std::pair<Function *, Function *> JumpPair;
|
|
typedef DenseMap<FunctionType *, std::vector<JumpPair> > JumpTables;
|
|
|
|
/// Inserts an entry in a table, adding the table if it doesn't exist.
|
|
void insertEntry(FunctionType *TableFunTy, Function *Target, Function *Jump);
|
|
|
|
/// Gets the tables.
|
|
const JumpTables &getTables() const { return Tables; }
|
|
|
|
/// Gets the alignment in bytes of a jumptable entry.
|
|
uint64_t entryByteAlignment() const { return ByteAlignment; }
|
|
private:
|
|
JumpTables Tables;
|
|
|
|
/// A power-of-two alignment of a jumptable entry.
|
|
uint64_t ByteAlignment;
|
|
};
|
|
|
|
/// Creates a JumpInstrTableInfo pass with the given bound on entry size. This
|
|
/// bound specifies the maximum number of bytes needed to represent an
|
|
/// unconditional jump or a trap instruction in the back end currently in use.
|
|
ModulePass *createJumpInstrTableInfoPass(unsigned Bound);
|
|
}
|
|
|
|
#endif /* LLVM_ANALYSIS_JUMPINSTRTABLEINFO_H */
|