mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-21 16:31:16 +00:00
5fed164d70
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32546 91177308-0d34-0410-b5e6-96231b3b80d8
81 lines
3.1 KiB
C++
81 lines
3.1 KiB
C++
//===-- InstrinsicInst.cpp - Intrinsic Instruction Wrappers -----*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file was developed by James M. Laskey and is distributed under
|
|
// the University of Illinois Open Source License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file implements methods that make it really easy to deal with intrinsic
|
|
// functions with the isa/dyncast family of functions. In particular, this
|
|
// allows you to do things like:
|
|
//
|
|
// if (DbgStopPointInst *SPI = dyn_cast<DbgStopPointInst>(Inst))
|
|
// ... SPI->getFileName() ... SPI->getDirectory() ...
|
|
//
|
|
// All intrinsic function calls are instances of the call instruction, so these
|
|
// are all subclasses of the CallInst class. Note that none of these classes
|
|
// has state or virtual methods, which is an important part of this gross/neat
|
|
// hack working.
|
|
//
|
|
// In some cases, arguments to intrinsics need to be generic and are defined as
|
|
// type pointer to empty struct { }*. To access the real item of interest the
|
|
// cast instruction needs to be stripped away.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/IntrinsicInst.h"
|
|
#include "llvm/Constants.h"
|
|
#include "llvm/GlobalVariable.h"
|
|
#include "llvm/CodeGen/MachineDebugInfo.h"
|
|
using namespace llvm;
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
/// DbgInfoIntrinsic - This is the common base class for debug info intrinsics
|
|
///
|
|
|
|
static Value *CastOperand(Value *C) {
|
|
if (ConstantExpr *CE = dyn_cast<ConstantExpr>(C))
|
|
if (CE->isCast())
|
|
return CE->getOperand(0);
|
|
return NULL;
|
|
}
|
|
|
|
Value *DbgInfoIntrinsic::StripCast(Value *C) {
|
|
if (Value *CO = CastOperand(C)) {
|
|
C = StripCast(CO);
|
|
} else if (GlobalVariable *GV = dyn_cast<GlobalVariable>(C)) {
|
|
if (GV->hasInitializer())
|
|
if (Value *CO = CastOperand(GV->getInitializer()))
|
|
C = StripCast(CO);
|
|
}
|
|
return dyn_cast<GlobalVariable>(C);
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
/// DbgStopPointInst - This represents the llvm.dbg.stoppoint instruction.
|
|
///
|
|
|
|
std::string DbgStopPointInst::getFileName() const {
|
|
// Once the operand indices are verified, update this assert
|
|
assert(LLVMDebugVersion == (6 << 16) && "Verify operand indices");
|
|
GlobalVariable *GV = cast<GlobalVariable>(getContext());
|
|
if (!GV->hasInitializer()) return "";
|
|
ConstantStruct *CS = cast<ConstantStruct>(GV->getInitializer());
|
|
return CS->getOperand(3)->getStringValue();
|
|
}
|
|
|
|
std::string DbgStopPointInst::getDirectory() const {
|
|
// Once the operand indices are verified, update this assert
|
|
assert(LLVMDebugVersion == (6 << 16) && "Verify operand indices");
|
|
GlobalVariable *GV = cast<GlobalVariable>(getContext());
|
|
if (!GV->hasInitializer()) return "";
|
|
ConstantStruct *CS = cast<ConstantStruct>(GV->getInitializer());
|
|
return CS->getOperand(4)->getStringValue();
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
/// Ensure that users of IntrinsicInst.h will link with this module.
|
|
DEFINING_FILE_FOR(IntrinsicInst)
|