mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-23 11:13:28 +01:00
740d86dc79
It includes a pass that rewrites all indirect calls to jumptable functions to pass through these tables. This also adds backend support for generating the jump-instruction tables on ARM and X86. Note that since the jumptable attribute creates a second function pointer for a function, any function marked with jumptable must also be marked with unnamed_addr. llvm-svn: 210280
41 lines
1.3 KiB
C++
41 lines
1.3 KiB
C++
//===-- JumpInstrTableInfo.cpp: Info for Jump-Instruction Tables ----------===//
|
|
//
|
|
// 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.
|
|
///
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#define DEBUG_TYPE "jiti"
|
|
|
|
#include "llvm/Analysis/JumpInstrTableInfo.h"
|
|
#include "llvm/Analysis/Passes.h"
|
|
#include "llvm/IR/Function.h"
|
|
#include "llvm/IR/Type.h"
|
|
|
|
using namespace llvm;
|
|
|
|
INITIALIZE_PASS(JumpInstrTableInfo, "jump-instr-table-info",
|
|
"Jump-Instruction Table Info", true, true)
|
|
char JumpInstrTableInfo::ID = 0;
|
|
|
|
ImmutablePass *llvm::createJumpInstrTableInfoPass() {
|
|
return new JumpInstrTableInfo();
|
|
}
|
|
|
|
JumpInstrTableInfo::JumpInstrTableInfo() : ImmutablePass(ID), Tables() {
|
|
initializeJumpInstrTableInfoPass(*PassRegistry::getPassRegistry());
|
|
}
|
|
|
|
JumpInstrTableInfo::~JumpInstrTableInfo() {}
|
|
|
|
void JumpInstrTableInfo::insertEntry(FunctionType *TableFunTy, Function *Target,
|
|
Function *Jump) {
|
|
Tables[TableFunTy].push_back(JumpPair(Target, Jump));
|
|
}
|