annotate lib/IR/IntrinsicInst.cpp @ 21:fc4a6333556f

change error message when tail call elimination is failed.
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Mon, 14 Oct 2013 19:09:00 +0900
parents 9ad51c7bc036
children 54457678186b
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1 //===-- InstrinsicInst.cpp - Intrinsic Instruction Wrappers -----*- C++ -*-===//
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2 //
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3 // The LLVM Compiler Infrastructure
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4 //
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5 // This file is distributed under the University of Illinois Open Source
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6 // License. See LICENSE.TXT for details.
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7 //
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8 //===----------------------------------------------------------------------===//
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9 //
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10 // This file implements methods that make it really easy to deal with intrinsic
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11 // functions.
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12 //
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13 // All intrinsic function calls are instances of the call instruction, so these
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14 // are all subclasses of the CallInst class. Note that none of these classes
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15 // has state or virtual methods, which is an important part of this gross/neat
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16 // hack working.
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17 //
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18 // In some cases, arguments to intrinsics need to be generic and are defined as
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19 // type pointer to empty struct { }*. To access the real item of interest the
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20 // cast instruction needs to be stripped away.
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21 //
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22 //===----------------------------------------------------------------------===//
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23
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24 #include "llvm/IR/IntrinsicInst.h"
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25 #include "llvm/IR/Constants.h"
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26 #include "llvm/IR/GlobalVariable.h"
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27 #include "llvm/IR/Metadata.h"
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28 using namespace llvm;
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29
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30 //===----------------------------------------------------------------------===//
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31 /// DbgInfoIntrinsic - This is the common base class for debug info intrinsics
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32 ///
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33
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34 static Value *CastOperand(Value *C) {
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35 if (ConstantExpr *CE = dyn_cast<ConstantExpr>(C))
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36 if (CE->isCast())
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37 return CE->getOperand(0);
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38 return NULL;
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39 }
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41 Value *DbgInfoIntrinsic::StripCast(Value *C) {
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42 if (Value *CO = CastOperand(C)) {
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43 C = StripCast(CO);
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44 } else if (GlobalVariable *GV = dyn_cast<GlobalVariable>(C)) {
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45 if (GV->hasInitializer())
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46 if (Value *CO = CastOperand(GV->getInitializer()))
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47 C = StripCast(CO);
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48 }
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49 return dyn_cast<GlobalVariable>(C);
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50 }
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51
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52 //===----------------------------------------------------------------------===//
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53 /// DbgDeclareInst - This represents the llvm.dbg.declare instruction.
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54 ///
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55
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56 Value *DbgDeclareInst::getAddress() const {
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57 if (MDNode* MD = cast_or_null<MDNode>(getArgOperand(0)))
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58 return MD->getOperand(0);
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59 else
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60 return NULL;
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61 }
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62
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63 //===----------------------------------------------------------------------===//
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64 /// DbgValueInst - This represents the llvm.dbg.value instruction.
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65 ///
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66
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67 const Value *DbgValueInst::getValue() const {
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68 return cast<MDNode>(getArgOperand(0))->getOperand(0);
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69 }
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70
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71 Value *DbgValueInst::getValue() {
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72 return cast<MDNode>(getArgOperand(0))->getOperand(0);
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73 }