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Simplify code: Succ is guaranteed to be not NULL. 

llvm-svn: 96772
This commit is contained in:
Zhongxing Xu 2010-02-22 02:59:27 +00:00
parent 740909be2d
commit d39620c451
1 changed files with 29 additions and 29 deletions
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58
clang/lib/Analysis/CFG.cpp
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@ -264,44 +264,44 @@ CFG* CFGBuilder::buildCFG(const Decl *D, Stmt* Statement, ASTContext* C,
if (!B)
B = Succ;
if (B) {
// Finalize the last constructed block. This usually involves reversing the
// order of the statements in the block.
if (Block) FinishBlock(B);
assert(B);
// Backpatch the gotos whose label -> block mappings we didn't know when we
// encountered them.
for (BackpatchBlocksTy::iterator I = BackpatchBlocks.begin(),
// Finalize the last constructed block. This usually involves reversing the
// order of the statements in the block.
FinishBlock(B);
// Backpatch the gotos whose label -> block mappings we didn't know when we
// encountered them.
for (BackpatchBlocksTy::iterator I = BackpatchBlocks.begin(),
E = BackpatchBlocks.end(); I != E; ++I ) {
CFGBlock* B = *I;
GotoStmt* G = cast<GotoStmt>(B->getTerminator());
LabelMapTy::iterator LI = LabelMap.find(G->getLabel());
CFGBlock* B = *I;
GotoStmt* G = cast<GotoStmt>(B->getTerminator());
LabelMapTy::iterator LI = LabelMap.find(G->getLabel());
// If there is no target for the goto, then we are looking at an
// incomplete AST. Handle this by not registering a successor.
// If there is no target for the goto, then we are looking at an
// incomplete AST. Handle this by not registering a successor.
if (LI == LabelMap.end()) continue;
AddSuccessor(B, LI->second);
}
// Add successors to the Indirect Goto Dispatch block (if we have one).
if (CFGBlock* B = cfg->getIndirectGotoBlock())
for (LabelSetTy::iterator I = AddressTakenLabels.begin(),
E = AddressTakenLabels.end(); I != E; ++I ) {
// Lookup the target block.
LabelMapTy::iterator LI = LabelMap.find(*I);
// If there is no target block that contains label, then we are looking
// at an incomplete AST. Handle this by not registering a successor.
if (LI == LabelMap.end()) continue;
AddSuccessor(B, LI->second);
}
// Add successors to the Indirect Goto Dispatch block (if we have one).
if (CFGBlock* B = cfg->getIndirectGotoBlock())
for (LabelSetTy::iterator I = AddressTakenLabels.begin(),
E = AddressTakenLabels.end(); I != E; ++I ) {
// Lookup the target block.
LabelMapTy::iterator LI = LabelMap.find(*I);
// If there is no target block that contains label, then we are looking
// at an incomplete AST. Handle this by not registering a successor.
if (LI == LabelMap.end()) continue;
AddSuccessor(B, LI->second);
}
Succ = B;
}
Succ = B;
// Create an empty entry block that has no predecessors.
cfg->setEntry(createBlock());