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Delete dead code.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100981 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2010-04-11 19:28:47 +00:00
parent d908bbf727
commit 86eeeaf877
1 changed files with 0 additions and 26 deletions
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26
lib/Analysis/IVUsers.cpp
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@ -36,32 +36,6 @@ Pass *llvm::createIVUsersPass() {
return new IVUsers(); return new IVUsers();
} }
/// CollectSubexprs - Split S into subexpressions which can be pulled out into
/// separate registers.
static void CollectSubexprs(const SCEV *S,
SmallVectorImpl<const SCEV *> &Ops,
ScalarEvolution &SE) {
if (const SCEVAddExpr *Add = dyn_cast<SCEVAddExpr>(S)) {
// Break out add operands.
for (SCEVAddExpr::op_iterator I = Add->op_begin(), E = Add->op_end();
I != E; ++I)
CollectSubexprs(*I, Ops, SE);
return;
} else if (const SCEVAddRecExpr *AR = dyn_cast<SCEVAddRecExpr>(S)) {
// Split a non-zero base out of an addrec.
if (!AR->getStart()->isZero()) {
CollectSubexprs(AR->getStart(), Ops, SE);
CollectSubexprs(SE.getAddRecExpr(SE.getIntegerSCEV(0, AR->getType()),
AR->getStepRecurrence(SE),
AR->getLoop()), Ops, SE);
return;
}
}
// Otherwise use the value itself.
Ops.push_back(S);
}
/// isInteresting - Test whether the given expression is "interesting" when /// isInteresting - Test whether the given expression is "interesting" when
/// used by the given expression, within the context of analyzing the /// used by the given expression, within the context of analyzing the
/// given loop. /// given loop.