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https://github.com/c64scene-ar/llvm-6502.git
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4f1bd9e996
1. Fix the macros in IncludeFile.h to put everything in the llvm namespace 2. Replace the previous explicit mechanism in all the .h and .cpp files with the macros in IncludeFile.h This gets us a consistent mechanism throughout LLVM for ensuring linkage. Next step is to make sure its used in enough places. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28715 91177308-0d34-0410-b5e6-96231b3b80d8
76 lines
2.8 KiB
C++
76 lines
2.8 KiB
C++
//===-- InstrinsicInst.cpp - Intrinsic Instruction Wrappers -----*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file was developed by James M. Laskey and is distributed under
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// the University of Illinois Open Source License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements methods that make it really easy to deal with intrinsic
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// functions with the isa/dyncast family of functions. In particular, this
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// allows you to do things like:
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//
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// if (DbgStopPointInst *SPI = dyn_cast<DbgStopPointInst>(Inst))
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// ... SPI->getFileName() ... SPI->getDirectory() ...
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//
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// All intrinsic function calls are instances of the call instruction, so these
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// are all subclasses of the CallInst class. Note that none of these classes
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// has state or virtual methods, which is an important part of this gross/neat
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// hack working.
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//
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// In some cases, arguments to intrinsics need to be generic and are defined as
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// type pointer to empty struct { }*. To access the real item of interest the
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// cast instruction needs to be stripped away.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/IntrinsicInst.h"
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#include "llvm/Constants.h"
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#include "llvm/GlobalVariable.h"
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using namespace llvm;
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//===----------------------------------------------------------------------===//
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/// DbgInfoIntrinsic - This is the common base class for debug info intrinsics
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///
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static Value *CastOperand(Value *C) {
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if (ConstantExpr *CE = dyn_cast<ConstantExpr>(C))
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if (CE->getOpcode() == Instruction::Cast)
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return CE->getOperand(0);
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return NULL;
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}
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Value *DbgInfoIntrinsic::StripCast(Value *C) {
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if (Value *CO = CastOperand(C)) {
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C = StripCast(CO);
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} else if (GlobalVariable *GV = dyn_cast<GlobalVariable>(C)) {
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if (GV->hasInitializer())
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if (Value *CO = CastOperand(GV->getInitializer()))
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C = StripCast(CO);
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}
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return dyn_cast<GlobalVariable>(C);
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}
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//===----------------------------------------------------------------------===//
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/// DbgStopPointInst - This represents the llvm.dbg.stoppoint instruction.
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///
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std::string DbgStopPointInst::getFileName() const {
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GlobalVariable *GV = cast<GlobalVariable>(getContext());
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ConstantStruct *CS = cast<ConstantStruct>(GV->getInitializer());
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return CS->getOperand(4)->getStringValue();
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}
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std::string DbgStopPointInst::getDirectory() const {
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GlobalVariable *GV = cast<GlobalVariable>(getContext());
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ConstantStruct *CS = cast<ConstantStruct>(GV->getInitializer());
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return CS->getOperand(5)->getStringValue();
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}
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//===----------------------------------------------------------------------===//
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/// Ensure that users of IntrinsicInst.h will link with this module.
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DEFINING_FILE_FOR(IntrinsicInst)
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