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/optimizing_compiler.cc b/compiler/optimizing/optimizing_compiler.cc
index e993d77..8bb5d8e 100644
--- a/compiler/optimizing/optimizing_compiler.cc
+++ b/compiler/optimizing/optimizing_compiler.cc
@@ -320,8 +320,10 @@
const DexCompilationUnit& dex_compilation_unit,
PassInfoPrinter* pass_info_printer,
StackHandleScopeCollection* handles) {
- HDeadCodeElimination dce1(graph, stats);
- HDeadCodeElimination dce2(graph, stats, "dead_code_elimination_final");
+ HDeadCodeElimination dce1(graph, stats,
+ HDeadCodeElimination::kInitialDeadCodeEliminationPassName);
+ HDeadCodeElimination dce2(graph, stats,
+ HDeadCodeElimination::kFinalDeadCodeEliminationPassName);
HConstantFolding fold1(graph);
InstructionSimplifier simplify1(graph, stats);
HBooleanSimplifier boolean_simplify(graph);