//===- ExprTypeConvert.cpp - Code to change an LLVM Expr Type -------------===//
+//
+// 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 part of level raising that checks to see if it is
// possible to coerce an entire expression tree into a different type. If
//===----------------------------------------------------------------------===//
#include "TransformInternals.h"
+#include "llvm/Constants.h"
#include "llvm/iOther.h"
#include "llvm/iPHINode.h"
#include "llvm/iMemory.h"
-#include "llvm/ConstantHandling.h"
+
#include "llvm/Analysis/Expressions.h"
#include "Support/STLExtras.h"
#include "Support/Debug.h"
#include <algorithm>
+using namespace llvm;
static bool OperandConvertibleToType(User *U, Value *V, const Type *Ty,
ValueTypeCache &ConvertedTypes,
if (!Ty->isSized()) return false; // Can only alloc something with a size
// Analyze the number of bytes allocated...
- ExprType Expr = ClassifyExpression(MI->getArraySize());
+ ExprType Expr = ClassifyExpr(MI->getArraySize());
// Get information about the base datatype being allocated, before & after
int ReqTypeSize = TD.getTypeSize(Ty);
BasicBlock::iterator It = BB->end();
// Analyze the number of bytes allocated...
- ExprType Expr = ClassifyExpression(MI->getArraySize());
+ ExprType Expr = ClassifyExpr(MI->getArraySize());
const PointerType *AllocTy = cast<PointerType>(Ty);
const Type *ElType = AllocTy->getElementType();
// ExpressionConvertibleToType - Return true if it is possible
-bool ExpressionConvertibleToType(Value *V, const Type *Ty,
+bool llvm::ExpressionConvertibleToType(Value *V, const Type *Ty,
ValueTypeCache &CTMap, const TargetData &TD) {
// Expression type must be holdable in a register.
if (!Ty->isFirstClassType())
if (CTMI != CTMap.end()) return CTMI->second == Ty;
// If it's a constant... all constants can be converted to a different
- // type. We just ask the constant propagator to see if it can convert the
- // value...
+ // type.
//
if (Constant *CPV = dyn_cast<Constant>(V))
- return ConstantFoldCastInstruction(CPV, Ty);
+ return true;
CTMap[V] = Ty;
if (V->getType() == Ty) return true; // Expression already correct type!
}
case Instruction::PHI: {
PHINode *PN = cast<PHINode>(I);
+ // Be conservative if we find a giant PHI node.
+ if (PN->getNumIncomingValues() > 32) return false;
+
for (unsigned i = 0; i < PN->getNumIncomingValues(); ++i)
if (!ExpressionConvertibleToType(PN->getIncomingValue(i), Ty, CTMap, TD))
return false;
// and we could convert this to an appropriate GEP for the new type.
//
if (GEP->getNumOperands() == 2 &&
- GEP->getOperand(1)->getType() == Type::LongTy &&
GEP->getType() == PointerType::get(Type::SByteTy)) {
// Do not Check to see if our incoming pointer can be converted
// getelemenptr [[int] *] * %reg115, long %reg138 ; [int]**
//
if (GEP->getNumOperands() == 2 &&
- GEP->getOperand(1)->getType() == Type::LongTy &&
PTy->getElementType()->isSized() &&
TD.getTypeSize(PTy->getElementType()) ==
TD.getTypeSize(GEP->getType()->getElementType())) {
//
const PointerType *PT = cast<PointerType>(I->getOperand(0)->getType());
const FunctionType *FT = cast<FunctionType>(PT->getElementType());
- std::vector<const Type *> ArgTys(FT->getParamTypes().begin(),
- FT->getParamTypes().end());
+ std::vector<const Type *> ArgTys(FT->param_begin(), FT->param_end());
const FunctionType *NewTy =
FunctionType::get(Ty, ArgTys, FT->isVarArg());
if (!ExpressionConvertibleToType(I->getOperand(0),
}
-Value *ConvertExpressionToType(Value *V, const Type *Ty, ValueMapCache &VMC,
- const TargetData &TD) {
+Value *llvm::ConvertExpressionToType(Value *V, const Type *Ty,
+ ValueMapCache &VMC, const TargetData &TD) {
if (V->getType() == Ty) return V; // Already where we need to be?
ValueMapCache::ExprMapTy::iterator VMCI = VMC.ExprMap.find(V);
Constant *CPV = cast<Constant>(V);
// Constants are converted by constant folding the cast that is required.
// We assume here that all casts are implemented for constant prop.
- Value *Result = ConstantFoldCastInstruction(CPV, Ty);
- assert(Result && "ConstantFoldCastInstruction Failed!!!");
- assert(Result->getType() == Ty && "Const prop of cast failed!");
-
+ Value *Result = ConstantExpr::getCast(CPV, Ty);
// Add the instruction to the expression map
//VMC.ExprMap[V] = Result;
return Result;
}
if (Res == 0 && GEP->getNumOperands() == 2 &&
- GEP->getOperand(1)->getType() == Type::LongTy &&
GEP->getType() == PointerType::get(Type::SByteTy)) {
// Otherwise, we can convert a GEP from one form to the other iff the
- // current gep is of the form 'getelementptr [sbyte]*, unsigned N
+ // current gep is of the form 'getelementptr sbyte*, unsigned N
// and we could convert this to an appropriate GEP for the new type.
//
const PointerType *NewSrcTy = PointerType::get(PVTy);
//
const PointerType *PT = cast<PointerType>(I->getOperand(0)->getType());
const FunctionType *FT = cast<FunctionType>(PT->getElementType());
- std::vector<const Type *> ArgTys(FT->getParamTypes().begin(),
- FT->getParamTypes().end());
+ std::vector<const Type *> ArgTys(FT->param_begin(), FT->param_end());
const FunctionType *NewTy =
FunctionType::get(Ty, ArgTys, FT->isVarArg());
const PointerType *NewPTy = PointerType::get(NewTy);
// ValueConvertibleToType - Return true if it is possible
-bool ValueConvertibleToType(Value *V, const Type *Ty,
- ValueTypeCache &ConvertedTypes,
- const TargetData &TD) {
+bool llvm::ValueConvertibleToType(Value *V, const Type *Ty,
+ ValueTypeCache &ConvertedTypes,
+ const TargetData &TD) {
ValueTypeCache::iterator I = ConvertedTypes.find(V);
if (I != ConvertedTypes.end()) return I->second == Ty;
ConvertedTypes[V] = Ty;
TD.getTypeSize(ElTy) != TD.getTypeSize(I->getOperand(0)->getType()))
return false;
- // Can convert store if the incoming value is convertible...
- return ExpressionConvertibleToType(I->getOperand(0), ElTy, CTMap, TD);
+ // Can convert store if the incoming value is convertible and if the
+ // result will preserve semantics...
+ const Type *Op0Ty = I->getOperand(0)->getType();
+ if (!(Op0Ty->isIntegral() ^ ElTy->isIntegral()) &&
+ !(Op0Ty->isFloatingPoint() ^ ElTy->isFloatingPoint()))
+ return ExpressionConvertibleToType(I->getOperand(0), ElTy, CTMap, TD);
}
return false;
}
// stream, so we have to delete it when we're done.
//
if (DataSize != 1) {
- TempScale = BinaryOperator::create(Instruction::Mul, Index,
- ConstantSInt::get(Type::LongTy,
- DataSize));
+ Value *CST;
+ if (Index->getType()->isSigned())
+ CST = ConstantSInt::get(Index->getType(), DataSize);
+ else
+ CST = ConstantUInt::get(Index->getType(), DataSize);
+
+ TempScale = BinaryOperator::create(Instruction::Mul, Index, CST);
Index = TempScale;
}
case Instruction::PHI: {
PHINode *PN = cast<PHINode>(I);
+ // Be conservative if we find a giant PHI node.
+ if (PN->getNumIncomingValues() > 32) return false;
+
for (unsigned i = 0; i < PN->getNumIncomingValues(); ++i)
if (!ExpressionConvertibleToType(PN->getIncomingValue(i), Ty, CTMap, TD))
return false;
// reason for this is that we prefer to have resolved functions but casted
// arguments if possible.
//
- const FunctionType::ParamTypes &PTs = FTy->getParamTypes();
- for (unsigned i = 0, NA = PTs.size(); i < NA; ++i)
- if (!PTs[i]->isLosslesslyConvertibleTo(I->getOperand(i+1)->getType()))
+ for (unsigned i = 0, NA = FTy->getNumParams(); i < NA; ++i)
+ if (!FTy->getParamType(i)->isLosslesslyConvertibleTo(I->getOperand(i+1)->getType()))
return false; // Operands must have compatible types!
// Okay, at this point, we know that all of the arguments can be
const FunctionType *FTy = cast<FunctionType>(MPtr->getElementType());
if (!FTy->isVarArg()) return false;
- if ((OpNum-1) < FTy->getParamTypes().size())
+ if ((OpNum-1) < FTy->getNumParams())
return false; // It's not in the varargs section...
// If we get this far, we know the value is in the varargs section of the
}
-void ConvertValueToNewType(Value *V, Value *NewVal, ValueMapCache &VMC,
- const TargetData &TD) {
+void llvm::ConvertValueToNewType(Value *V, Value *NewVal, ValueMapCache &VMC,
+ const TargetData &TD) {
ValueHandle VH(VMC, V);
unsigned NumUses = V->use_size();
if (const CompositeType *CT = dyn_cast<CompositeType>(LoadedTy)) {
std::vector<Value*> Indices;
- Indices.push_back(ConstantSInt::get(Type::LongTy, 0));
+ Indices.push_back(Constant::getNullValue(Type::UIntTy));
unsigned Offset = 0; // No offset, get first leaf.
LoadedTy = getStructOffsetType(CT, Offset, Indices, TD, false);
const StructType *SElTy = cast<StructType>(ElTy);
std::vector<Value*> Indices;
- Indices.push_back(Constant::getNullValue(Type::LongTy));
+ Indices.push_back(Constant::getNullValue(Type::UIntTy));
unsigned Offset = 0;
const Type *Ty = getStructOffsetType(ElTy, Offset, Indices, TD,false);
if (isa<StructType>(ValTy)) {
std::vector<Value*> Indices;
- Indices.push_back(Constant::getNullValue(Type::LongTy));
+ Indices.push_back(Constant::getNullValue(Type::UIntTy));
unsigned Offset = 0;
ValTy = getStructOffsetType(ValTy, Offset, Indices, TD, false);
if (DataSize != 1) {
// Insert a multiply of the old element type is not a unit size...
- Index = BinaryOperator::create(Instruction::Mul, Index,
- ConstantSInt::get(Type::LongTy, DataSize),
- "scale", It);
+ Value *CST;
+ if (Index->getType()->isSigned())
+ CST = ConstantSInt::get(Index->getType(), DataSize);
+ else
+ CST = ConstantUInt::get(Index->getType(), DataSize);
+
+ Index = BinaryOperator::create(Instruction::Mul, Index, CST, "scale", It);
}
// Perform the conversion now...
if (Meth == OldVal) { // Changing the function pointer?
const PointerType *NewPTy = cast<PointerType>(NewVal->getType());
const FunctionType *NewTy = cast<FunctionType>(NewPTy->getElementType());
- const FunctionType::ParamTypes &PTs = NewTy->getParamTypes();
if (NewTy->getReturnType() == Type::VoidTy)
Name = ""; // Make sure not to name a void call!
// Convert over all of the call operands to their new types... but only
// convert over the part that is not in the vararg section of the call.
//
- for (unsigned i = 0; i < PTs.size(); ++i)
- if (Params[i]->getType() != PTs[i]) {
+ for (unsigned i = 0; i != NewTy->getNumParams(); ++i)
+ if (Params[i]->getType() != NewTy->getParamType(i)) {
// Create a cast to convert it to the right type, we know that this
// is a lossless cast...
//
- Params[i] = new CastInst(Params[i], PTs[i], "callarg.cast." +
+ Params[i] = new CastInst(Params[i], NewTy->getParamType(i),
+ "callarg.cast." +
Params[i]->getName(), It);
}
Meth = NewVal; // Update call destination to new value
// << Operands[0]->use_size() << " " << Operands[0]);
}
}
+
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