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RegAlloc: Handle case when def is unused

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This commit is contained in:
MerryMage 2016-08-13 01:55:03 +01:00
parent d43d97b990
commit 8fc21f481a
1 changed files with 2 additions and 1 deletions
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3
src/backend_x64/reg_alloc.cpp
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@ -392,7 +392,8 @@ void RegAlloc::EndOfAllocScope() {
iter.values.clear(); iter.values.clear();
iter.values.emplace_back(iter.def); iter.values.emplace_back(iter.def);
iter.def = nullptr; iter.def = nullptr;
} else if (!iter.values.empty()) { }
if (!iter.values.empty()) {
auto to_erase = std::remove_if(iter.values.begin(), iter.values.end(), auto to_erase = std::remove_if(iter.values.begin(), iter.values.end(),
[](const auto& inst){ return inst->use_count <= 0; }); [](const auto& inst){ return inst->use_count <= 0; });
iter.values.erase(to_erase, iter.values.end()); iter.values.erase(to_erase, iter.values.end());