Merge experimental/gc branch to the bleeding_edge.

src/arm/frames-arm.h

Index: src/arm/frames-arm.h
===================================================================
--- src/arm/frames-arm.h	(revision 9327)
+++ src/arm/frames-arm.h	(working copy)
@@ -70,6 +70,16 @@
   1 << 10 |  // r10 v7
   1 << 11;   // r11 v8 (fp in JavaScript code)
 
+// When calling into C++ (only for C++ calls that can't cause a GC).
+// The call code will take care of lr, fp, etc.
+static const RegList kCallerSaved =
+  1 <<  0 |  // r0
+  1 <<  1 |  // r1
+  1 <<  2 |  // r2
+  1 <<  3 |  // r3
+  1 <<  9;   // r9
+
+
 static const int kNumCalleeSaved = 7 + kR9Available;
 
 // Double registers d8 to d15 are callee-saved.