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[ORC] Simplify logic for updating edges when should-discard atoms are pruned.

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llvm-svn: 360384
This commit is contained in:
Lang Hames 2019-05-09 22:03:58 +00:00
parent 4d43101dbf
commit 4e3453b47a
1 changed files with 4 additions and 16 deletions
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20
lib/ExecutionEngine/JITLink/JITLinkGeneric.cpp
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@ -433,28 +433,16 @@ void prune(AtomGraph &G) {
//
// We replace if all of the following hold:
// (1) The atom is marked should-discard,
// (2) it is live, and
// (3) it has edges pointing to it.
// (2) it has live edges (i.e. edges from live atoms) pointing to it.
//
// Otherwise we simply delete the atom.
bool ReplaceWithExternal = DA->isLive() && DA->shouldDiscard();
std::vector<Edge *> *EdgesToUpdateForDA = nullptr;
if (ReplaceWithExternal) {
auto ETUItr = EdgesToUpdate.find(DA);
if (ETUItr == EdgesToUpdate.end())
ReplaceWithExternal = false;
else
EdgesToUpdateForDA = &ETUItr->second;
}
G.removeDefinedAtom(*DA);
if (ReplaceWithExternal) {
assert(EdgesToUpdateForDA &&
"Replacing atom: There should be edges to update");
auto EdgesToUpdateItr = EdgesToUpdate.find(DA);
if (EdgesToUpdateItr != EdgesToUpdate.end()) {
auto &ExternalReplacement = G.addExternalAtom(DA->getName());
for (auto *EdgeToUpdate : *EdgesToUpdateForDA)
for (auto *EdgeToUpdate : EdgesToUpdateItr->second)
EdgeToUpdate->setTarget(ExternalReplacement);
LLVM_DEBUG(dbgs() << "replaced with " << ExternalReplacement << "\n");
} else