New array bounds check elimination pass (focused on induction variables and bitwise operations).

src/hydrogen.cc

Index: src/hydrogen.cc
diff --git a/src/hydrogen.cc b/src/hydrogen.cc
index 396e98a7f931cd824e516d3faef20a94c1ec97e0..b0d78793d98ec04aa10528d1a52b6b1acf2b7f54 100644
--- a/src/hydrogen.cc
+++ b/src/hydrogen.cc
@@ -4251,6 +4251,8 @@ class BoundsCheckBbData: public ZoneObject {
     }
 
     if (!keep_new_check) {
+      BasicBlock()->graph()->isolate()->counters()->
+          bounds_checks_covered()->Increment();
       new_check->DeleteAndReplaceWith(new_check->ActualValue());
     }
 
@@ -4448,6 +4450,9 @@ void HGraph::EliminateRedundantBoundsChecks() {
   HPhase phase("H_Eliminate bounds checks", this);
   BoundsCheckTable checks_table(zone());
   EliminateRedundantBoundsChecks(entry_block(), &checks_table);
+    if (FLAG_abcd_ivars) {

[titzer, 2013/07/11 16:39:10]

Indentation

[Massi, 2013/07/12 08:20:24]

Done.

+      EliminateRedundantBoundsChecksUsingInductionVariables();
+    }
 }