ART: Rediscover loops after deleting blocks in DCE
The way DCE currently updates loop information does not cover all
cases. This patch removes the logic, resets loop information of live
blocks to pre-SSA state and reanalyzes the affected loops.
Change-Id: I0b996a70235b95a8db0de9a23a03f71db57a21b8
diff --git a/compiler/optimizing/dead_code_elimination.h b/compiler/optimizing/dead_code_elimination.h
index 0bea0fc..59a57c4 100644
--- a/compiler/optimizing/dead_code_elimination.h
+++ b/compiler/optimizing/dead_code_elimination.h
@@ -31,13 +31,13 @@
public:
HDeadCodeElimination(HGraph* graph,
OptimizingCompilerStats* stats = nullptr,
- const char* name = kDeadCodeEliminationPassName)
+ const char* name = kInitialDeadCodeEliminationPassName)
: HOptimization(graph, true, name, stats) {}
void Run() OVERRIDE;
- static constexpr const char* kDeadCodeEliminationPassName =
- "dead_code_elimination";
+ static constexpr const char* kInitialDeadCodeEliminationPassName = "dead_code_elimination";
+ static constexpr const char* kFinalDeadCodeEliminationPassName = "dead_code_elimination_final";
private:
void MaybeRecordDeadBlock(HBasicBlock* block);