Array index computation dehoisting.

src/arm/lithium-arm.cc

Index: src/arm/lithium-arm.cc
diff --git a/src/arm/lithium-arm.cc b/src/arm/lithium-arm.cc
index 5c60f5321c19d787f6f5b10351ec3d06a2c69a89..4e3e1c4c865f8d77d22a8d28b07ff1bdfb5a50e4 100644
--- a/src/arm/lithium-arm.cc
+++ b/src/arm/lithium-arm.cc
@@ -1956,7 +1956,8 @@ LInstruction* LChunkBuilder::DoLoadKeyedFastElement(
   ASSERT(instr->key()->representation().IsInteger32());
   LOperand* obj = UseRegisterAtStart(instr->object());
   LOperand* key = UseRegisterAtStart(instr->key());
-  LLoadKeyedFastElement* result = new(zone()) LLoadKeyedFastElement(obj, key);
+  LLoadKeyedFastElement* result =

[Jakob Kummerow, 2012/05/15 15:53:23]

nit: why this change?

+      new(zone()) LLoadKeyedFastElement(obj, key);
   if (instr->RequiresHoleCheck()) AssignEnvironment(result);
   return DefineAsRegister(result);
 }
@@ -2035,7 +2036,9 @@ LInstruction* LChunkBuilder::DoStoreKeyedFastDoubleElement(
   LOperand* val = UseTempRegister(instr->value());
   LOperand* key = UseRegisterOrConstantAtStart(instr->key());
 
-  return new(zone()) LStoreKeyedFastDoubleElement(elements, key, val);
+  return new(zone()) LStoreKeyedFastDoubleElement(elements,

[Jakob Kummerow, 2012/05/15 15:53:23]

nit: why this change?

+                                                  key,
+                                                  val);
 }