//
// 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 is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
#include "llvm/Constants.h"
#include "llvm/DerivedTypes.h"
#include "llvm/Instructions.h"
+#include "llvm/IntrinsicInst.h"
+#include "llvm/GlobalVariable.h"
#include "llvm/Function.h"
+#include "llvm/LLVMContext.h"
+#include "llvm/Metadata.h"
#include "llvm/Support/CFG.h"
-#include "llvm/Support/Compiler.h"
#include "llvm/Transforms/Utils/ValueMapper.h"
#include "llvm/Analysis/ConstantFolding.h"
+#include "llvm/Analysis/DebugInfo.h"
#include "llvm/ADT/SmallVector.h"
#include <map>
using namespace llvm;
DenseMap<const Value*, Value*> &ValueMap,
const char *NameSuffix, Function *F,
ClonedCodeInfo *CodeInfo) {
- BasicBlock *NewBB = new BasicBlock("", F);
+ BasicBlock *NewBB = BasicBlock::Create(BB->getContext(), "", F);
if (BB->hasName()) NewBB->setName(BB->getName()+NameSuffix);
bool hasCalls = false, hasDynamicAllocas = false, hasStaticAllocas = false;
NewBB->getInstList().push_back(NewInst);
ValueMap[II] = NewInst; // Add instruction map to value.
- hasCalls |= isa<CallInst>(II);
+ hasCalls |= (isa<CallInst>(II) && !isa<DbgInfoIntrinsic>(II));
if (const AllocaInst *AI = dyn_cast<AllocaInst>(II)) {
if (isa<ConstantInt>(AI->getArraySize()))
hasStaticAllocas = true;
//
void llvm::CloneFunctionInto(Function *NewFunc, const Function *OldFunc,
DenseMap<const Value*, Value*> &ValueMap,
- std::vector<ReturnInst*> &Returns,
+ SmallVectorImpl<ReturnInst*> &Returns,
const char *NameSuffix, ClonedCodeInfo *CodeInfo) {
assert(NameSuffix && "NameSuffix cannot be null!");
assert(ValueMap.count(I) && "No mapping from source argument specified!");
#endif
- // Clone the parameter attributes
- NewFunc->setParamAttrs(OldFunc->getParamAttrs());
+ // Clone any attributes.
+ if (NewFunc->arg_size() == OldFunc->arg_size())
+ NewFunc->copyAttributesFrom(OldFunc);
+ else {
+ //Some arguments were deleted with the ValueMap. Copy arguments one by one
+ for (Function::const_arg_iterator I = OldFunc->arg_begin(),
+ E = OldFunc->arg_end(); I != E; ++I)
+ if (Argument* Anew = dyn_cast<Argument>(ValueMap[I]))
+ Anew->addAttr( OldFunc->getAttributes()
+ .getParamAttributes(I->getArgNo() + 1));
+ NewFunc->setAttributes(NewFunc->getAttributes()
+ .addAttr(0, OldFunc->getAttributes()
+ .getRetAttributes()));
+ NewFunc->setAttributes(NewFunc->getAttributes()
+ .addAttr(~0, OldFunc->getAttributes()
+ .getFnAttributes()));
+
+ }
// Loop over all of the basic blocks in the function, cloning them as
// appropriate. Note that we save BE this way in order to handle cloning of
ArgTypes, F->getFunctionType()->isVarArg());
// Create the new function...
- Function *NewF = new Function(FTy, F->getLinkage(), F->getName());
+ Function *NewF = Function::Create(FTy, F->getLinkage(), F->getName());
// Loop over the arguments, copying the names of the mapped arguments over...
Function::arg_iterator DestI = NewF->arg_begin();
ValueMap[I] = DestI++; // Add mapping to ValueMap
}
- std::vector<ReturnInst*> Returns; // Ignore returns cloned...
+ SmallVector<ReturnInst*, 8> Returns; // Ignore returns cloned.
CloneFunctionInto(NewF, F, ValueMap, Returns, "", CodeInfo);
return NewF;
}
namespace {
/// PruningFunctionCloner - This class is a private class used to implement
/// the CloneAndPruneFunctionInto method.
- struct VISIBILITY_HIDDEN PruningFunctionCloner {
+ struct PruningFunctionCloner {
Function *NewFunc;
const Function *OldFunc;
DenseMap<const Value*, Value*> &ValueMap;
- std::vector<ReturnInst*> &Returns;
+ SmallVectorImpl<ReturnInst*> &Returns;
const char *NameSuffix;
ClonedCodeInfo *CodeInfo;
const TargetData *TD;
-
public:
PruningFunctionCloner(Function *newFunc, const Function *oldFunc,
DenseMap<const Value*, Value*> &valueMap,
- std::vector<ReturnInst*> &returns,
+ SmallVectorImpl<ReturnInst*> &returns,
const char *nameSuffix,
ClonedCodeInfo *codeInfo,
const TargetData *td)
// Nope, clone it now.
BasicBlock *NewBB;
- BBEntry = NewBB = new BasicBlock();
+ BBEntry = NewBB = BasicBlock::Create(BB->getContext());
if (BB->hasName()) NewBB->setName(BB->getName()+NameSuffix);
bool hasCalls = false, hasDynamicAllocas = false, hasStaticAllocas = false;
ValueMap[II] = C;
continue;
}
-
+
Instruction *NewInst = II->clone();
if (II->hasName())
NewInst->setName(II->getName()+NameSuffix);
NewBB->getInstList().push_back(NewInst);
ValueMap[II] = NewInst; // Add instruction map to value.
- hasCalls |= isa<CallInst>(II);
+ hasCalls |= (isa<CallInst>(II) && !isa<DbgInfoIntrinsic>(II));
if (const AllocaInst *AI = dyn_cast<AllocaInst>(II)) {
if (isa<ConstantInt>(AI->getArraySize()))
hasStaticAllocas = true;
// Constant fold to uncond branch!
if (Cond) {
BasicBlock *Dest = BI->getSuccessor(!Cond->getZExtValue());
- ValueMap[OldTI] = new BranchInst(Dest, NewBB);
+ ValueMap[OldTI] = BranchInst::Create(Dest, NewBB);
ToClone.push_back(Dest);
TerminatorDone = true;
}
Cond = dyn_cast_or_null<ConstantInt>(ValueMap[SI->getCondition()]);
if (Cond) { // Constant fold to uncond branch!
BasicBlock *Dest = SI->getSuccessor(SI->findCaseValue(Cond));
- ValueMap[OldTI] = new BranchInst(Dest, NewBB);
+ ValueMap[OldTI] = BranchInst::Create(Dest, NewBB);
ToClone.push_back(Dest);
TerminatorDone = true;
}
else
return 0; // All operands not constant!
-
if (const CmpInst *CI = dyn_cast<CmpInst>(I))
- return ConstantFoldCompareInstOperands(CI->getPredicate(),
- &Ops[0], Ops.size(), TD);
- else
- return ConstantFoldInstOperands(I->getOpcode(), I->getType(),
- &Ops[0], Ops.size(), TD);
+ return ConstantFoldCompareInstOperands(CI->getPredicate(), Ops[0], Ops[1],
+ TD);
+
+ if (const LoadInst *LI = dyn_cast<LoadInst>(I))
+ if (ConstantExpr *CE = dyn_cast<ConstantExpr>(Ops[0]))
+ if (!LI->isVolatile() && CE->getOpcode() == Instruction::GetElementPtr)
+ if (GlobalVariable *GV = dyn_cast<GlobalVariable>(CE->getOperand(0)))
+ if (GV->isConstant() && GV->hasDefinitiveInitializer())
+ return ConstantFoldLoadThroughGEPConstantExpr(GV->getInitializer(),
+ CE);
+
+ return ConstantFoldInstOperands(I->getOpcode(), I->getType(), &Ops[0],
+ Ops.size(), TD);
+}
+
+static MDNode *UpdateInlinedAtInfo(MDNode *InsnMD, MDNode *TheCallMD) {
+ DILocation ILoc(InsnMD);
+ if (ILoc.isNull()) return InsnMD;
+
+ DILocation CallLoc(TheCallMD);
+ if (CallLoc.isNull()) return InsnMD;
+
+ DILocation OrigLocation = ILoc.getOrigLocation();
+ MDNode *NewLoc = TheCallMD;
+ if (!OrigLocation.isNull())
+ NewLoc = UpdateInlinedAtInfo(OrigLocation.getNode(), TheCallMD);
+
+ Value *MDVs[] = {
+ InsnMD->getOperand(0), // Line
+ InsnMD->getOperand(1), // Col
+ InsnMD->getOperand(2), // Scope
+ NewLoc
+ };
+ return MDNode::get(InsnMD->getContext(), MDVs, 4);
}
/// CloneAndPruneFunctionInto - This works exactly like CloneFunctionInto,
/// used for things like CloneFunction or CloneModule.
void llvm::CloneAndPruneFunctionInto(Function *NewFunc, const Function *OldFunc,
DenseMap<const Value*, Value*> &ValueMap,
- std::vector<ReturnInst*> &Returns,
+ SmallVectorImpl<ReturnInst*> &Returns,
const char *NameSuffix,
ClonedCodeInfo *CodeInfo,
- const TargetData *TD) {
+ const TargetData *TD,
+ Instruction *TheCall) {
assert(NameSuffix && "NameSuffix cannot be null!");
#ifndef NDEBUG
E = OldFunc->arg_end(); II != E; ++II)
assert(ValueMap.count(II) && "No mapping from source argument specified!");
#endif
-
- PruningFunctionCloner PFC(NewFunc, OldFunc, ValueMap, Returns,
+
+ PruningFunctionCloner PFC(NewFunc, OldFunc, ValueMap, Returns,
NameSuffix, CodeInfo, TD);
// Clone the entry block, and anything recursively reachable from it.
// insert it into the new function in the right order. If not, ignore it.
//
// Defer PHI resolution until rest of function is resolved.
- std::vector<const PHINode*> PHIToResolve;
+ SmallVector<const PHINode*, 16> PHIToResolve;
for (Function::const_iterator BI = OldFunc->begin(), BE = OldFunc->end();
BI != BE; ++BI) {
BasicBlock *NewBB = cast_or_null<BasicBlock>(ValueMap[BI]);
// references as we go. This uses ValueMap to do all the hard work.
//
BasicBlock::iterator I = NewBB->begin();
+
+ unsigned DbgKind = OldFunc->getContext().getMDKindID("dbg");
+ MDNode *TheCallMD = NULL;
+ if (TheCall && TheCall->hasMetadata())
+ TheCallMD = TheCall->getMetadata(DbgKind);
// Handle PHI nodes specially, as we have to remove references to dead
// blocks.
if (PHINode *PN = dyn_cast<PHINode>(I)) {
// Skip over all PHI nodes, remembering them for later.
BasicBlock::const_iterator OldI = BI->begin();
- for (; (PN = dyn_cast<PHINode>(I)); ++I, ++OldI)
+ for (; (PN = dyn_cast<PHINode>(I)); ++I, ++OldI) {
+ if (I->hasMetadata()) {
+ if (TheCallMD) {
+ if (MDNode *IMD = I->getMetadata(DbgKind)) {
+ MDNode *NewMD = UpdateInlinedAtInfo(IMD, TheCallMD);
+ I->setMetadata(DbgKind, NewMD);
+ }
+ } else {
+ // The cloned instruction has dbg info but the call instruction
+ // does not have dbg info. Remove dbg info from cloned instruction.
+ I->setMetadata(DbgKind, 0);
+ }
+ }
PHIToResolve.push_back(cast<PHINode>(OldI));
+ }
}
+ // FIXME:
+ // FIXME:
+ // FIXME: Unclone all this metadata stuff.
+ // FIXME:
+ // FIXME:
+
// Otherwise, remap the rest of the instructions normally.
- for (; I != NewBB->end(); ++I)
+ for (; I != NewBB->end(); ++I) {
+ if (I->hasMetadata()) {
+ if (TheCallMD) {
+ if (MDNode *IMD = I->getMetadata(DbgKind)) {
+ MDNode *NewMD = UpdateInlinedAtInfo(IMD, TheCallMD);
+ I->setMetadata(DbgKind, NewMD);
+ }
+ } else {
+ // The cloned instruction has dbg info but the call instruction
+ // does not have dbg info. Remove dbg info from cloned instruction.
+ I->setMetadata(DbgKind, 0);
+ }
+ }
RemapInstruction(I, ValueMap);
+ }
}
// Defer PHI resolution until rest of function is resolved, PHI resolution
for (unsigned pred = 0, e = NumPreds; pred != e; ++pred) {
if (BasicBlock *MappedBlock =
cast_or_null<BasicBlock>(ValueMap[PN->getIncomingBlock(pred)])) {
- Value *InVal = MapValue(PN->getIncomingValue(pred), ValueMap);
+ Value *InVal = MapValue(PN->getIncomingValue(pred),
+ ValueMap);
assert(InVal && "Unknown input value?");
PN->setIncomingValue(pred, InVal);
PN->setIncomingBlock(pred, MappedBlock);
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