Use Copy-on-write arrays for cached regexp results.

src/arm/full-codegen-arm.cc

Index: src/arm/full-codegen-arm.cc
diff --git a/src/arm/full-codegen-arm.cc b/src/arm/full-codegen-arm.cc
index f3adab2814eb76e20d50b894b414665d2ccb64aa..218132418288dccc986ff3037427bed6c727d972 100644
--- a/src/arm/full-codegen-arm.cc
+++ b/src/arm/full-codegen-arm.cc
@@ -2536,6 +2536,14 @@ void FullCodeGenerator::EmitRegExpConstructResult(ZoneList<Expression*>* args) {
 }
 
 
+void FullCodeGenerator::EmitRegExpCloneResult(ZoneList<Expression*>* args) {

[Vitaly Repeshko, 2010/08/20 13:29:49]

Can this be moved to the architecture independent full-codegen?

[Lasse Reichstein, 2010/08/23 12:52:11]

Done.
There actually seems to be a lot of Emit-runtime-call function that can be
generalized.

+  ASSERT(args->length() == 1);
+  VisitForValue(args->at(0), kStack);
+  __ CallRuntime(Runtime::kRegExpConstructResult, 1);

[Vitaly Repeshko, 2010/08/20 13:29:49]

kRegExpConstructResult -> kRegExpCloneResult.

[Lasse Reichstein, 2010/08/23 12:52:11]

Fixed.

+  Apply(context_, r0);
+}
+
+
 void FullCodeGenerator::EmitSwapElements(ZoneList<Expression*>* args) {
   ASSERT(args->length() == 3);
   VisitForValue(args->at(0), kStack);