mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-11-01 00:11:00 +00:00
f70e0c216c
implementation from the TargetMachine directly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10636 91177308-0d34-0410-b5e6-96231b3b80d8
57 lines
1.9 KiB
C++
57 lines
1.9 KiB
C++
//===-- IntrinsicLowering.cpp - Intrinsic Lowering default implementation -===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file was developed by the LLVM research group and is distributed under
|
|
// the University of Illinois Open Source License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file implements the default intrinsic lowering implementation.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/IntrinsicLowering.h"
|
|
#include "llvm/Constant.h"
|
|
#include "llvm/Module.h"
|
|
#include "llvm/Type.h"
|
|
#include "llvm/iOther.h"
|
|
using namespace llvm;
|
|
|
|
void DefaultIntrinsicLowering::LowerIntrinsicCall(CallInst *CI) {
|
|
Function *Callee = CI->getCalledFunction();
|
|
assert(Callee && "Cannot lower an indirect call!");
|
|
|
|
Module *M = Callee->getParent();
|
|
|
|
switch (Callee->getIntrinsicID()) {
|
|
case Intrinsic::not_intrinsic:
|
|
std::cerr << "Cannot lower a call to a non-intrinsic function '"
|
|
<< Callee->getName() << "'!\n";
|
|
abort();
|
|
default:
|
|
std::cerr << "Error: Code generator does not support intrinsic function '"
|
|
<< Callee->getName() << "'!\n";
|
|
abort();
|
|
|
|
// The default implementation of setjmp/longjmp transforms setjmp into a
|
|
// noop that always returns zero and longjmp into a call to abort. This
|
|
// allows code that never longjmps to work correctly.
|
|
case Intrinsic::setjmp:
|
|
case Intrinsic::sigsetjmp:
|
|
if (CI->getType() != Type::VoidTy)
|
|
CI->replaceAllUsesWith(Constant::getNullValue(CI->getType()));
|
|
break;
|
|
|
|
case Intrinsic::longjmp:
|
|
case Intrinsic::siglongjmp:
|
|
// Insert the call to abort
|
|
new CallInst(M->getOrInsertFunction("abort", Type::VoidTy, 0), "", CI);
|
|
break;
|
|
}
|
|
|
|
assert(CI->use_empty() &&
|
|
"Lowering should have eliminated any uses of the intrinsic call!");
|
|
CI->getParent()->getInstList().erase(CI);
|
|
}
|