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Move SCEVNAryExpr's virtual member functions out of line, and convert

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them to iterators.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111140 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman
2010-08-16 16:21:27 +00:00
parent bb85409b51
commit 2f199f9952
2 changed files with 36 additions and 22 deletions
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33
lib/Analysis/ScalarEvolution.cpp
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@@ -271,6 +271,39 @@ bool SCEVNAryExpr::properlyDominates(BasicBlock *BB, DominatorTree *DT) const {
return true;
}
bool SCEVNAryExpr::isLoopInvariant(const Loop *L) const {
for (op_iterator I = op_begin(), E = op_end(); I != E; ++I)
if (!(*I)->isLoopInvariant(L))
return false;
return true;
}
// hasComputableLoopEvolution - N-ary expressions have computable loop
// evolutions iff they have at least one operand that varies with the loop,
// but that all varying operands are computable.
bool SCEVNAryExpr::hasComputableLoopEvolution(const Loop *L) const {
bool HasVarying = false;
for (op_iterator I = op_begin(), E = op_end(); I != E; ++I) {
const SCEV *S = *I;
if (!S->isLoopInvariant(L)) {
if (S->hasComputableLoopEvolution(L))
HasVarying = true;
else
return false;
}
}
return HasVarying;
}
bool SCEVNAryExpr::hasOperand(const SCEV *O) const {
for (op_iterator I = op_begin(), E = op_end(); I != E; ++I) {
const SCEV *S = *I;
if (O == S || S->hasOperand(O))
return true;
}
return false;
}
bool SCEVUDivExpr::dominates(BasicBlock *BB, DominatorTree *DT) const {
return LHS->dominates(BB, DT) && RHS->dominates(BB, DT);
}