LLVM API Documentation

CodeExtractor Class Reference

Collaboration diagram for CodeExtractor:


Public Member Functions
	CodeExtractor (DominatorTree *dt=0, bool AggArgs=false)
Function *	ExtractCodeRegion (const std::vector< BasicBlock * > &code)
bool	isEligible (const std::vector< BasicBlock * > &code)

Constructor & Destructor Documentation

CodeExtractor::CodeExtractor ( DominatorTree * dt = 0,

bool AggArgs = false

) [inline]

Definition at line 52 of file CodeExtractor.cpp.
References AggregateArgsOpt.

Function * CodeExtractor::ExtractCodeRegion ( const std::vector< BasicBlock * > & code )

ExtractRegion - Removes a loop from a function, replaces it with a call to new function. Returns pointer to the new function.
algorithm:
find inputs and outputs for the region
for inputs: add to function as args, map input instr* to arg# for outputs: add allocas for scalars, add to func as args, map output instr* to arg#
rewrite func to use argument #s instead of instr*
for each scalar output in the function: at every exit, store intermediate computed result back into memory.
Definition at line 608 of file CodeExtractor.cpp.
References DEBUG, llvm::PHINode::getIncomingBlock(), llvm::BasicBlock::getInstList(), llvm::PHINode::getNumIncomingValues(), llvm::GlobalValue::getParent(), llvm::BasicBlock::getParent(), isEligible(), llvm::pred_begin(), llvm::pred_end(), llvm::pred_iterator, llvm::PHINode::removeIncomingValue(), llvm::PHINode::setIncomingBlock(), llvm::succ_begin(), llvm::succ_end(), and llvm::verifyFunction().

bool CodeExtractor::isEligible ( const std::vector< BasicBlock * > & code )

Definition at line 705 of file CodeExtractor.cpp.
References llvm::CallInst::getCalledFunction(), and llvm::Function::getIntrinsicID().
Referenced by ExtractCodeRegion().

The documentation for this class was generated from the following file: