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Factor out the code for deleting a formula from an LSRUse into

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a helper function.

llvm-svn: 104079
This commit is contained in:
Dan Gohman 2010-05-18 22:39:15 +00:00
parent 9c986cbbe9
commit 22ae418189
1 changed files with 9 additions and 4 deletions
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13
lib/Transforms/Scalar/LoopStrengthReduce.cpp
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@ -942,6 +942,7 @@ public:
AllFixupsOutsideLoop(true) {}
bool InsertFormula(const Formula &F);
void DeleteFormula(Formula &F);
void check() const;
@ -979,6 +980,12 @@ bool LSRUse::InsertFormula(const Formula &F) {
return true;
}
/// DeleteFormula - Remove the given formula from this use's list.
void LSRUse::DeleteFormula(Formula &F) {
std::swap(F, Formulae.back());
Formulae.pop_back();
}
void LSRUse::print(raw_ostream &OS) const {
OS << "LSR Use: Kind=";
switch (Kind) {
@ -2631,8 +2638,7 @@ void LSRInstance::FilterOutUndesirableDedicatedRegisters() {
#ifndef NDEBUG
Changed = true;
#endif
std::swap(F, LU.Formulae.back());
LU.Formulae.pop_back();
LU.DeleteFormula(F);
--FIdx;
--NumForms;
continue;
@ -2728,8 +2734,7 @@ void LSRInstance::NarrowSearchSpaceUsingHeuristics() {
Formula &F = LU.Formulae[i];
if (!F.referencesReg(Best)) {
DEBUG(dbgs() << " Deleting "; F.print(dbgs()); dbgs() << '\n');
std::swap(LU.Formulae.back(), F);
LU.Formulae.pop_back();
LU.DeleteFormula(F);
--e;
--i;
assert(e != 0 && "Use has no formulae left! Is Regs inconsistent?");