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Once the layout is done we don't need to keep updating which fragments are

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valid. Addresses will not change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120921 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola 2010-12-04 22:47:22 +00:00
parent db74aeadcd
commit b4172fa729
1 changed files with 5 additions and 13 deletions
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18
lib/MC/MCAssembler.cpp
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@ -122,10 +122,6 @@ void MCAsmLayout::ReplaceFragment(MCFragment *Src, MCFragment *Dst) {
// Set the data fragment's layout data.
Dst->setParent(Src->getParent());
Dst->setAtom(Src->getAtom());
Dst->setLayoutOrder(Src->getLayoutOrder());
if (LastValidFragment == Src)
LastValidFragment = Dst;
Dst->Offset = Src->Offset;
Dst->EffectiveSize = Src->EffectiveSize;
@ -136,15 +132,7 @@ void MCAsmLayout::ReplaceFragment(MCFragment *Src, MCFragment *Dst) {
void MCAsmLayout::CoalesceFragments(MCFragment *Src, MCFragment *Dst) {
assert(Src->getPrevNode() == Dst);
if (isFragmentUpToDate(Src)) {
if (LastValidFragment == Src)
LastValidFragment = Dst;
Dst->EffectiveSize += Src->EffectiveSize;
} else {
// We don't know the effective size of Src, so we have to invalidate Dst.
Invalidate(Dst);
}
Dst->EffectiveSize += Src->EffectiveSize;
// Remove Src, but don't delete it yet.
Src->getParent()->getFragmentList().remove(Src);
}
@ -907,6 +895,10 @@ void MCAssembler::FinishLayout(MCAsmLayout &Layout) {
// cheap (we will mostly end up eliminating fragments and appending on to data
// fragments), so the extra complexity downstream isn't worth it. Evaluate
// this assumption.
// The layout is done. Mark every fragment as valid.
Layout.getFragmentOffset(&*Layout.getSectionOrder().back()->rbegin());
unsigned FragmentIndex = 0;
for (unsigned i = 0, e = Layout.getSectionOrder().size(); i != e; ++i) {
MCSectionData &SD = *Layout.getSectionOrder()[i];