Supporting AllocationSiteInfo for Nested arrays

src/arm/code-stubs-arm.cc

Index: src/arm/code-stubs-arm.cc
diff --git a/src/arm/code-stubs-arm.cc b/src/arm/code-stubs-arm.cc
index 62fcc9a981ccd5946ed7946d006d7e6d5224d4d1..e34292bf5a49372696cd523d8179ad550bd77d27 100644
--- a/src/arm/code-stubs-arm.cc
+++ b/src/arm/code-stubs-arm.cc
@@ -496,7 +496,14 @@ void FastCloneShallowArrayStub::Generate(MacroAssembler* masm) {
   __ Ret();
 
   __ bind(&slow_case);
-  __ TailCallRuntime(Runtime::kCreateArrayLiteralShallow, 3, 1);
+
+  // Add a flags argument, carefully preserving the return address on the stack.

[danno, 2013/02/11 15:05:21]

The comment is a bit misleading for ARM, since the return address is in "lr", so
there is no care needed :-)

[mvstanton, 2013/02/15 07:36:43]

Done.

+  int flags = allocation_site_mode_ == TRACK_ALLOCATION_SITE
+      ? ArrayLiteral::kAllocationSiteInfoAllowed
+      : ArrayLiteral::kNoFlags;
+  __ mov(r0, Operand(Smi::FromInt(flags)));
+  __ push(r0);
+  __ TailCallRuntime(Runtime::kCreateArrayLiteralShallow, 4, 1);
 }