Optimizer: generate code starting with empty state

This commit is contained in:
chriseth
2016-10-21 18:03:57 +02:00
parent 3e13e59ff9
commit ba42c6e447
2 changed files with 5 additions and 2 deletions
+4 -2
View File
@@ -327,8 +327,10 @@ Assembly& Assembly::optimise(bool _enable, bool _isCreation, size_t _runs)
AssemblyItems optimisedItems;
for (BasicBlock const& block: cfg.optimisedBlocks())
{
assertThrow(!!block.startState, OptimizerException, "");
CommonSubexpressionEliminator eliminator(*block.startState);
// We used to start with the block's initial state but it caused
// too many inconsistencies.
KnownState emptyState;
CommonSubexpressionEliminator eliminator(emptyState);
auto iter = m_items.begin() + block.begin;
auto const end = m_items.begin() + block.end;
while (iter < end)