X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;ds=inline;f=include%2Fllvm%2FTransforms%2FUtils%2FCloning.h;h=b709edfac1b9083bb49e5258bf010aea36292658;hb=48b2f3e4850cd27d54224cd42da8a160d6b95984;hp=d17b52568a918b020929eb6bfac921077de7a263;hpb=2b6d2eb2d0e44eb8d897fce107961767b9676a79;p=oota-llvm.git diff --git a/include/llvm/Transforms/Utils/Cloning.h b/include/llvm/Transforms/Utils/Cloning.h index d17b52568a9..b709edfac1b 100644 --- a/include/llvm/Transforms/Utils/Cloning.h +++ b/include/llvm/Transforms/Utils/Cloning.h @@ -1,10 +1,10 @@ //===- Cloning.h - Clone various parts of LLVM programs ---------*- C++ -*-===// -// +// // 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. +// //===----------------------------------------------------------------------===// // // This file defines various functions that are used to clone chunks of LLVM @@ -19,12 +19,14 @@ #define LLVM_TRANSFORMS_UTILS_CLONING_H #include -#include +#include "llvm/ADT/DenseMap.h" namespace llvm { class Module; class Function; +class Pass; +class LPPassManager; class BasicBlock; class Value; class CallInst; @@ -32,10 +34,41 @@ class InvokeInst; class ReturnInst; class CallSite; class Trace; +class CallGraph; +class TargetData; +class Loop; +class LoopInfo; +struct LLVMContext; /// CloneModule - Return an exact copy of the specified module /// Module *CloneModule(const Module *M); +Module *CloneModule(const Module *M, DenseMap &ValueMap); + +/// ClonedCodeInfo - This struct can be used to capture information about code +/// being cloned, while it is being cloned. +struct ClonedCodeInfo { + /// ContainsCalls - This is set to true if the cloned code contains a normal + /// call instruction. + bool ContainsCalls; + + /// ContainsUnwinds - This is set to true if the cloned code contains an + /// unwind instruction. + bool ContainsUnwinds; + + /// ContainsDynamicAllocas - This is set to true if the cloned code contains + /// a 'dynamic' alloca. Dynamic allocas are allocas that are either not in + /// the entry block or they are in the entry block but are not a constant + /// size. + bool ContainsDynamicAllocas; + + ClonedCodeInfo() { + ContainsCalls = false; + ContainsUnwinds = false; + ContainsDynamicAllocas = false; + } +}; + /// CloneBasicBlock - Return a copy of the specified basic block, but without /// embedding the block into a particular function. The block returned is an @@ -61,10 +94,20 @@ Module *CloneModule(const Module *M); /// If you would like the basic block to be auto-inserted into the end of a /// function, you can specify it as the optional fourth parameter. /// +/// If you would like to collect additional information about the cloned +/// function, you can specify a ClonedCodeInfo object with the optional fifth +/// parameter. +/// BasicBlock *CloneBasicBlock(const BasicBlock *BB, - std::map &ValueMap, - const char *NameSuffix = "", Function *F = 0); + DenseMap &ValueMap, + const char *NameSuffix = "", Function *F = 0, + ClonedCodeInfo *CodeInfo = 0); + +/// CloneLoop - Clone Loop. Clone dominator info for loop insiders. Populate ValueMap +/// using old blocks to new blocks mapping. +Loop *CloneLoop(Loop *L, LPPassManager *LPM, LoopInfo *LI, + DenseMap &ValueMap, Pass *P); /// CloneFunction - Return a copy of the specified function, but without /// embedding the function into another module. Also, any references specified @@ -72,16 +115,18 @@ BasicBlock *CloneBasicBlock(const BasicBlock *BB, /// original one. If any of the arguments to the function are in the ValueMap, /// the arguments are deleted from the resultant function. The ValueMap is /// updated to include mappings from all of the instructions and basicblocks in -/// the function from their old to new values. +/// the function from their old to new values. The final argument captures +/// information about the cloned code if non-null. /// Function *CloneFunction(const Function *F, - std::map &ValueMap); + DenseMap &ValueMap, + ClonedCodeInfo *CodeInfo = 0); /// CloneFunction - Version of the function that doesn't need the ValueMap. /// -inline Function *CloneFunction(const Function *F) { - std::map ValueMap; - return CloneFunction(F, ValueMap); +inline Function *CloneFunction(const Function *F, ClonedCodeInfo *CodeInfo = 0){ + DenseMap ValueMap; + return CloneFunction(F, ValueMap, CodeInfo); } /// Clone OldFunc into NewFunc, transforming the old arguments into references @@ -91,37 +136,55 @@ inline Function *CloneFunction(const Function *F) { /// specified suffix to all values cloned. /// void CloneFunctionInto(Function *NewFunc, const Function *OldFunc, - std::map &ValueMap, + DenseMap &ValueMap, std::vector &Returns, - const char *NameSuffix = ""); + const char *NameSuffix = "", + ClonedCodeInfo *CodeInfo = 0); + +/// CloneAndPruneFunctionInto - This works exactly like CloneFunctionInto, +/// except that it does some simple constant prop and DCE on the fly. The +/// effect of this is to copy significantly less code in cases where (for +/// example) a function call with constant arguments is inlined, and those +/// constant arguments cause a significant amount of code in the callee to be +/// dead. Since this doesn't produce an exactly copy of the input, it can't be +/// used for things like CloneFunction or CloneModule. +void CloneAndPruneFunctionInto(Function *NewFunc, const Function *OldFunc, + DenseMap &ValueMap, + std::vector &Returns, + const char *NameSuffix = "", + ClonedCodeInfo *CodeInfo = 0, + const TargetData *TD = 0); /// CloneTraceInto - Clone T into NewFunc. Original<->clone mapping is /// saved in ValueMap. /// void CloneTraceInto(Function *NewFunc, Trace &T, - std::map &ValueMap, + DenseMap &ValueMap, const char *NameSuffix); +/// CloneTrace - Returns a copy of the specified trace. +/// It takes a vector of basic blocks clones the basic blocks, removes internal +/// phi nodes, adds it to the same function as the original (although there is +/// no jump to it) and returns the new vector of basic blocks. +std::vector CloneTrace(const std::vector &origTrace); + /// InlineFunction - This function inlines the called function into the basic /// block of the caller. This returns false if it is not possible to inline /// this call. The program is still in a well defined state if this occurs /// though. /// -/// Note that this only does one level of inlining. For example, if the +/// Note that this only does one level of inlining. For example, if the /// instruction 'call B' is inlined, and 'B' calls 'C', then the call to 'C' now /// exists in the instruction stream. Similiarly this will inline a recursive /// function by one level. /// -bool InlineFunction(CallInst *C); -bool InlineFunction(InvokeInst *II); -bool InlineFunction(CallSite CS); - -/// CloneTrace - Returns a copy of the specified trace. -/// It takes a vector of basic blocks clones the basic blocks, removes internal -/// phi nodes, adds it to the same function as the original (although there is -/// no jump to it) and returns the new vector of basic blocks. -std::vector CloneTrace(const std::vector &origTrace); +/// If a non-null callgraph pointer is provided, these functions update the +/// CallGraph to represent the program after inlining. +/// +bool InlineFunction(CallInst *C, CallGraph *CG = 0, const TargetData *TD = 0); +bool InlineFunction(InvokeInst *II, CallGraph *CG = 0, const TargetData *TD =0); +bool InlineFunction(CallSite CS, CallGraph *CG = 0, const TargetData *TD = 0); } // End llvm namespace