output.h (SECTION_EXCLUDE): New macro.

2011-09-27  Sriraman Tallam  <tmsriram@google.com>

	* output.h (SECTION_EXCLUDE): New macro.
	* varasm.c (default_elf_asm_named_section): Check for
	SECTION_EXCLUDE.

From-SVN: r179288

gcc/ChangeLog

+2011-09-27  Sriraman Tallam  <tmsriram@google.com>
+
+	* output.h (SECTION_EXCLUDE): New macro.
+	* varasm.c (default_elf_asm_named_section): Check for
+	SECTION_EXCLUDE.	
+
 2011-09-27  Richard Sandiford  <rdsandiford@googlemail.com>
 
 	* fwprop.c (forward_propagate_and_simplify): After checking

gcc/output.h

@@ -443,6 +443,7 @@ extern void no_asm_to_stream (FILE *);
 #define SECTION_COMMON   0x800000	/* contains common data */
 #define SECTION_RELRO	 0x1000000	/* data is readonly after relocation processing */
 #define SECTION_MACH_DEP 0x2000000	/* subsequent bits reserved for target */
+#define SECTION_EXCLUDE  0x4000000      /* discarded by the linker */
 
 /* This SECTION_STYLE is used for unnamed sections that we can switch
    to using a special assembler directive.  */

gcc/varasm.c

@@ -6159,6 +6159,8 @@ default_elf_asm_named_section (const char *name, unsigned int flags,
 
   if (!(flags & SECTION_DEBUG))
     *f++ = 'a';
+  if (flags & SECTION_EXCLUDE)
+    *f++ = 'e';
   if (flags & SECTION_WRITE)
     *f++ = 'w';
   if (flags & SECTION_CODE)