ARM: Remove a bunch of spilled scopes. Still a lot to go.

src/arm/virtual-frame-arm.h

Index: src/arm/virtual-frame-arm.h
===================================================================
--- src/arm/virtual-frame-arm.h	(revision 4863)
+++ src/arm/virtual-frame-arm.h	(working copy)
@@ -189,12 +189,15 @@
     return (tos_known_smi_map_ & (~other->tos_known_smi_map_)) == 0;
   }
 
+  inline void ForgetTypeInfo() {
+    tos_known_smi_map_ = 0;
+  }
+
   // Detach a frame from its code generator, perhaps temporarily.  This
   // tells the register allocator that it is free to use frame-internal
   // registers.  Used when the code generator's frame is switched from this
   // one to NULL by an unconditional jump.
   void DetachFromCodeGenerator() {
-    AssertIsSpilled();
   }
 
   // (Re)attach a frame to its code generator.  This informs the register
@@ -202,7 +205,6 @@
   // Used when a code generator's frame is switched from NULL to this one by
   // binding a label.
   void AttachToCodeGenerator() {
-    AssertIsSpilled();
   }
 
   // Emit code for the physical JS entry and exit frame sequences.  After
@@ -330,6 +332,10 @@
   // must be copied to a scratch register before modification.
   Register Peek();
 
+  // Look at the value beneath the top of the stack.  The register returned is
+  // aliased and must be copied to a scratch register before modification.
+  Register Peek2();
+
   // Duplicate the top of stack.
   void Dup();
 
@@ -339,6 +345,9 @@
   // Flushes all registers, but it puts a copy of the top-of-stack in r0.
   void SpillAllButCopyTOSToR0();
 
+  // Flushes all registers, but it puts a copy of the top-of-stack in r0.

[Søren Thygesen Gjesse, 2010/06/15 10:29:56]

r0 -> r1

+  void SpillAllButCopyTOSToR1();
+
   // Flushes all registers, but it puts a copy of the top-of-stack in r1
   // and the next value on the stack in r0.
   void SpillAllButCopyTOSToR1R0();