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5d0f7af3dc
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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210280 91177308-0d34-0410-b5e6-96231b3b80d8
41 lines
1.3 KiB
C++
41 lines
1.3 KiB
C++
//===-- JumpInstrTableInfo.cpp: Info for Jump-Instruction Tables ----------===//
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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///
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/// \file
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/// \brief Information about jump-instruction tables that have been created by
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/// JumpInstrTables pass.
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///
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//===----------------------------------------------------------------------===//
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#define DEBUG_TYPE "jiti"
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#include "llvm/Analysis/JumpInstrTableInfo.h"
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#include "llvm/Analysis/Passes.h"
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#include "llvm/IR/Function.h"
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#include "llvm/IR/Type.h"
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using namespace llvm;
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INITIALIZE_PASS(JumpInstrTableInfo, "jump-instr-table-info",
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"Jump-Instruction Table Info", true, true)
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char JumpInstrTableInfo::ID = 0;
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ImmutablePass *llvm::createJumpInstrTableInfoPass() {
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return new JumpInstrTableInfo();
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}
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JumpInstrTableInfo::JumpInstrTableInfo() : ImmutablePass(ID), Tables() {
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initializeJumpInstrTableInfoPass(*PassRegistry::getPassRegistry());
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}
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JumpInstrTableInfo::~JumpInstrTableInfo() {}
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void JumpInstrTableInfo::insertEntry(FunctionType *TableFunTy, Function *Target,
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Function *Jump) {
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Tables[TableFunTy].push_back(JumpPair(Target, Jump));
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}
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