Enable preaging of code objects when --optimize-for-size.

src/v8globals.h

Index: src/v8globals.h
diff --git a/src/v8globals.h b/src/v8globals.h
index 7fa2fd62c56035d7ef11559f39e7b28cee2da2e3..0de8c78c674c10d2bc834c2de2e82df2016f59cd 100644
--- a/src/v8globals.h
+++ b/src/v8globals.h
@@ -213,6 +213,7 @@ enum VisitMode {
 // Flag indicating whether code is built into the VM (one of the natives files).
 enum NativesFlag { NOT_NATIVES_CODE, NATIVES_CODE };
 
+static const int kPrologueOffsetNotSet = -1;

[danno, 2013/10/04 16:30:09]

This is probably better suited to be in codegen.h

[rmcilroy, 2013/10/07 10:56:13]

It is needed in a number of .h files (heap.h, factory.h, etc). If I move this to
codegen.h I need to add codegen.h to these headers includes, which seems to
cause a bunch of compile errors - e.g.:

In file included from ../src/gdb-jit.h:41:0,
                 from ../src/assembler.h:42,
                 from ../src/code-stubs.h:32,
                 from ../src/codegen.h:31,
                 from ../src/heap.h:35,
                 from ../src/elements.h:33,
                 from ../src/objects-inl.h:38,
                 from ../src/v8.h:61,
                 from ../src/accessors.cc:28:
../src/factory.h:460:13: error: ‘ROOT_ACCESSOR’ has not been declared
../src/factory.h:460:26: error: ISO C++ forbids declaration of ‘ROOT_LIST’ with
no type [-fpermissive]

Any ideas on how to solve this?

 
 // A CodeDesc describes a buffer holding instructions and relocation
 // information. The instructions start at the beginning of the buffer