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Method.h no longer includes BasicBlock.h

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Method::inst_* is now in llvm/Support/InstIterator.h
GraphTraits specializations for BasicBlock and Methods are now in llvm/Support/CFG.h


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1746 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2002-02-12 21:07:25 +00:00
parent 3c34a46c7e
commit 221d688a5e
37 changed files with 128 additions and 83 deletions
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49
lib/Transforms/Scalar/SCCP.cpp
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@ -244,39 +244,36 @@ bool SCCP::doSCCP() {
// constants if we have found them to be of constant values.
//
bool MadeChanges = false;
for (Method::inst_iterator II = M->inst_begin(); II != M->inst_end(); ) {
Instruction *Inst = *II;
InstVal &IV = ValueState[Inst];
if (IV.isConstant()) {
Constant *Const = IV.getConstant();
// cerr << "Constant: " << Inst << " is: " << Const;
for (Method::iterator MI = M->begin(), ME = M->end(); MI != ME; ++MI) {
BasicBlock *BB = *MI;
for (BasicBlock::iterator BI = BB->begin(); BI != BB->end();) {
Instruction *Inst = *BI;
InstVal &IV = ValueState[Inst];
if (IV.isConstant()) {
Constant *Const = IV.getConstant();
// cerr << "Constant: " << Inst << " is: " << Const;
// Replaces all of the uses of a variable with uses of the constant.
Inst->replaceAllUsesWith(Const);
// Replaces all of the uses of a variable with uses of the constant.
Inst->replaceAllUsesWith(Const);
// Remove the operator from the list of definitions...
Inst->getParent()->getInstList().remove(II.getInstructionIterator());
// Remove the operator from the list of definitions...
BB->getInstList().remove(BI);
// The new constant inherits the old name of the operator...
if (Inst->hasName() && !Const->hasName())
Const->setName(Inst->getName(), M->getSymbolTableSure());
// The new constant inherits the old name of the operator...
if (Inst->hasName() && !Const->hasName())
Const->setName(Inst->getName(), M->getSymbolTableSure());
// Delete the operator now...
delete Inst;
// Delete the operator now...
delete Inst;
// Incrementing the iterator in an unchecked manner could mess up the
// internals of 'II'. To make sure everything is happy, tell it we might
// have broken it.
II.resyncInstructionIterator();
// Hey, we just changed something!
MadeChanges = true;
} else if (TerminatorInst *TI = dyn_cast<TerminatorInst>(Inst)) {
MadeChanges |= ConstantFoldTerminator(TI);
}
// Hey, we just changed something!
MadeChanges = true;
continue; // Skip the ++II at the end of the loop here...
} else if (Inst->isTerminator()) {
MadeChanges |= ConstantFoldTerminator(cast<TerminatorInst>(Inst));
++BI;
}
++II;
}
// Merge identical constants last: this is important because we may have just