Map ".text.hot" and ".text.unlikely" input section prefixes to separate output sections.

[Sriraman Tallam]

Hi,

  Sections prefixed with ".text.hot", ".text.unlikely" and
".text.startup" should map to separate output sections so that they
can be grouped together. The following simple patch does this. Alright
to submit?

Thanks,
-Sri.

	* layout.cc (Layout::section_name_mapping): Map ".text.hot" and
	".text.unlikely", and ".text.startup" input section prefixes to
	separate output sections.

Index: layout.cc
===================================================================
RCS file: /cvs/src/src/gold/layout.cc,v
retrieving revision 1.219
diff -u -r1.219 layout.cc
--- layout.cc	27 Aug 2011 01:28:17 -0000	1.219
+++ layout.cc	13 Sep 2011 21:55:36 -0000
@@ -4437,6 +4437,9 @@
 #define MAPPING_INIT(f, t) { f, sizeof(f) - 1, t, sizeof(t) - 1 }
 const Layout::Section_name_mapping Layout::section_name_mapping[] =
 {
+  MAPPING_INIT(".text.hot.", ".text.hot"),
+  MAPPING_INIT(".text.unlikely.", ".text.unlikely"),
+  MAPPING_INIT(".text.startup.", ".text.startup"),
   MAPPING_INIT(".text.", ".text"),
   MAPPING_INIT(".rodata.", ".rodata"),
   MAPPING_INIT(".data.rel.ro.local", ".data.rel.ro.local"),