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MC CFG: Add more MCFunction container methods (find, empty).

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188876 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Ahmed Bougacha 2013-08-21 07:27:59 +00:00
parent 7dac32d07d
commit f9e2348e94
2 changed files with 20 additions and 2 deletions
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10
include/llvm/MC/MCFunction.h
View File

@ -97,13 +97,15 @@ public:
StringRef getName() const { return Name; }
/// \name Access to the function's basic blocks. No ordering is enforced.
/// \name Access to the function's basic blocks. No ordering is enforced,
/// except that the first block is the entry block.
/// @{
/// \brief Get the entry point basic block.
const MCBasicBlock *getEntryBlock() const { return front(); }
MCBasicBlock *getEntryBlock() { return front(); }
// NOTE: Dereferencing iterators gives pointers, so maybe a list is best here.
bool empty() const { return Blocks.empty(); }
typedef BasicBlockListTy::const_iterator const_iterator;
typedef BasicBlockListTy:: iterator iterator;
const_iterator begin() const { return Blocks.begin(); }
@ -115,6 +117,10 @@ public:
MCBasicBlock* front() { return Blocks.front(); }
const MCBasicBlock* back() const { return Blocks.back(); }
MCBasicBlock* back() { return Blocks.back(); }
/// \brief Find the basic block, if any, that starts at \p StartAddr.
const MCBasicBlock *find(uint64_t StartAddr) const;
MCBasicBlock *find(uint64_t StartAddr);
/// @}
};

12
lib/MC/MCFunction.cpp
View File

@ -30,6 +30,18 @@ MCBasicBlock &MCFunction::createBlock(const MCTextAtom &TA) {
return *Blocks.back();
}
const MCBasicBlock *MCFunction::find(uint64_t StartAddr) const {
for (const_iterator I = begin(), E = end(); I != E; ++I)
if ((*I)->getInsts()->getBeginAddr() == StartAddr)
return (*I);
return 0;
}
MCBasicBlock *MCFunction::find(uint64_t StartAddr) {
return const_cast<MCBasicBlock *>(
const_cast<const MCFunction *>(this)->find(StartAddr));
}
// MCBasicBlock
MCBasicBlock::MCBasicBlock(const MCTextAtom &Insts, MCFunction *Parent)