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Diffstat (limited to 'compiler/optimizing/dead_code_elimination.cc')
-rw-r--r--compiler/optimizing/dead_code_elimination.cc12
1 files changed, 5 insertions, 7 deletions
diff --git a/compiler/optimizing/dead_code_elimination.cc b/compiler/optimizing/dead_code_elimination.cc
index 9754043f32..02e5dab3d4 100644
--- a/compiler/optimizing/dead_code_elimination.cc
+++ b/compiler/optimizing/dead_code_elimination.cc
@@ -123,20 +123,21 @@ void HDeadCodeElimination::RemoveDeadBlocks() {
}
// If we removed at least one block, we need to recompute the full
- // dominator tree.
+ // dominator tree and try block membership.
if (removed_one_or_more_blocks) {
graph_->ClearDominanceInformation();
graph_->ComputeDominanceInformation();
+ graph_->ComputeTryBlockInformation();
}
// Connect successive blocks created by dead branches. Order does not matter.
for (HReversePostOrderIterator it(*graph_); !it.Done();) {
HBasicBlock* block = it.Current();
- if (block->IsEntryBlock() || block->GetSuccessors().size() != 1u) {
+ if (block->IsEntryBlock() || !block->GetLastInstruction()->IsGoto()) {
it.Advance();
continue;
}
- HBasicBlock* successor = block->GetSuccessors()[0];
+ HBasicBlock* successor = block->GetSingleSuccessor();
if (successor->IsExitBlock() || successor->GetPredecessors().size() != 1u) {
it.Advance();
continue;
@@ -176,10 +177,7 @@ void HDeadCodeElimination::RemoveDeadInstructions() {
}
void HDeadCodeElimination::Run() {
- if (!graph_->HasTryCatch()) {
- // TODO: Update dead block elimination and enable for try/catch.
- RemoveDeadBlocks();
- }
+ RemoveDeadBlocks();
SsaRedundantPhiElimination(graph_).Run();
RemoveDeadInstructions();
}