Patchwork [PCH] Do not write/read asm_out_file

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Submitter Steven Bosscher
Date June 6, 2012, 9:22 p.m.
Message ID <CABu31nN0RWQDThn2tm_ccz83d6ZyRUCwWv69Ydoj98Aewr1tKA@mail.gmail.com>
Download mbox | patch
Permalink /patch/163429/
State New
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Comments

Steven Bosscher - June 6, 2012, 9:22 p.m.
On Wed, Jun 6, 2012 at 10:45 AM, Richard Guenther
<richard.guenther@gmail.com> wrote:
> Please split up the patch into one dealing with #ident exclusively and
> a followup with the other pieces.

Hello,

This is the patch to deal with #ident. It removes the ASM_OUTPUT_IDENT
and IDENT_ASM_OP target macros, and replaces them with a single target
hook. For targets that treat front-end #idents different from the GCC
version string .ident, the hooks can use cgraph_status to distinguish
them.

This patch was bootstrapped and tested on powerpc64-unknown-linux-gnu
with all languages enabled (c,c++,objc,obj-c++,fortran,java,ada), and
on x86_64-unknown-linux-gnu (c,c++,objc,fortran,ada). In addition, I
have built cross-tools in combined trees (src+gcc) from
powerpc64-unknown-linux-gnu to cris-elf, mips-elf, rx-elf, and
microblaze-elf, and verified that the differences in assembler output
are negligible (only #APP / #NO_APP, which is emitted for all
top-level asms, and an extra blank line). I have also tested mips-sim
and compared the test results without and with patch.

OK for trunk?

Ciao!
Steven
gcc/
	* target.def (output_ident): New hook.
	* targhooks.h (default_asm_output_ident_directive): Add prototype.
	* varasm.c (default_asm_output_ident_directive): New function to emit
	.ident as a top-level asm node while parsing, or directly to
	asm_out_file after parsing.
	* output.h (flag_no_gcc_ident): New internal flag.
	* toplev.c (compile_file): Print a GCC .ident if not flag_no_gcc_ident
	* doc/tm.texi.in (ASM_OUTPUT_IDENT): Remove documentation for macro.
	* doc/tm.texi: Update.

	* config/elfos.h (ASM_OUTPUT_IDENT, IDENT_ASM_OP): Remove.
	(TARGET_ASM_OUTPUT_IDENT): Define.
	* config/i386/djgpp.h (IDENT_ASM_OP): Remove.
	* config/i386/gas.h (ASM_OUTPUT_IDENT): Remove.
	* config/arm/aout.h (ASM_OUTPUT_IDENT): Remove.
	* config/sparc/sparc.h (IDENT_ASM_OP): Remove.
	(TARGET_ASM_OUTPUT_IDENT): Define.
	* config/picochip/picochip.h (IDENT_ASM_OP): Remove.
	(TARGET_ASM_OUTPUT_IDENT): Define.
	* config/cris/cris.h (ASM_OUTPUT_IDENT, IDENT_ASM_OP): Remove.
	* config/cris/cris.c (cris_option_override): Set flag_no_gcc_ident.

	* config/microblaze/microblaze-protos.h (microblaze_asm_output_ident):
	Add prototype.
	* config/microblaze/microblaze.c: Include cgraph.h for add_asm_node.
	(microblaze_asm_output_ident): Rewrite to work similar to
	default_asm_output_ident.
	* config/microblaze/microblaze.h (ASM_OUTPUT_IDENT): Remove.
	(TARGET_ASM_OUTPUT_IDENT): Define.

	* config/mips/mips-protos.h (mips_asm_output_ident): Add prototype.
	* config/mips/mips.c (mips_asm_output_ident): New function, similar to
	default_asm_output_ident.
	* config/mips/mips.h (ASM_OUTPUT_IDENT): Remove.
	(TARGET_ASM_OUTPUT_IDENT): Define.
	* config/mips/sde.h (TARGET_ASM_OUTPUT_IDENT): Override mips.h default.

	* config/rx/rx.c: Include cgraph.h for add_asm_node.
	(rx_asm_output_ident): New function, similar to
	default_asm_output_ident, but handle AS100 syntax also, so that #ident
	also works for rx in AS100 syntax.
	(TARGET_ASM_OUTPUT_IDENT): Define.
	* config/rx/rx.h (IDENT_ASM_OP): Remove.

c-family/
	* c-family/c-lex.c: Do not include output.h.
	(cb_ident): Try to put out .ident with targetm.asm_out.output_ident.
	Remove uses of ASM_OUTPUT_IDENT.

ada/
	* ada/gcc-interface/trans.c: Include target.h.
	(gigi): Try to put out .ident with targetm.asm_out.output_ident.
	Remove uses of ASM_OUTPUT_IDENT.
Michael Eager - June 6, 2012, 10 p.m.
On 06/06/2012 02:22 PM, Steven Bosscher wrote:
> On Wed, Jun 6, 2012 at 10:45 AM, Richard Guenther
> <richard.guenther@gmail.com>  wrote:
>> Please split up the patch into one dealing with #ident exclusively and
>> a followup with the other pieces.
>
> Hello,
>
> This is the patch to deal with #ident. It removes the ASM_OUTPUT_IDENT
> and IDENT_ASM_OP target macros, and replaces them with a single target
> hook. For targets that treat front-end #idents different from the GCC
> version string .ident, the hooks can use cgraph_status to distinguish
> them.
>
> This patch was bootstrapped and tested on powerpc64-unknown-linux-gnu
> with all languages enabled (c,c++,objc,obj-c++,fortran,java,ada), and
> on x86_64-unknown-linux-gnu (c,c++,objc,fortran,ada). In addition, I
> have built cross-tools in combined trees (src+gcc) from
> powerpc64-unknown-linux-gnu to cris-elf, mips-elf, rx-elf, and
> microblaze-elf, and verified that the differences in assembler output
> are negligible (only #APP / #NO_APP, which is emitted for all
> top-level asms, and an extra blank line). I have also tested mips-sim
> and compared the test results without and with patch.
>
> OK for trunk?

Please eliminate the comment before microblaze_asm_output_ident().
Steven Bosscher - June 6, 2012, 10:32 p.m.
On Thu, Jun 7, 2012 at 12:00 AM, Michael Eager <eager@eagercon.com> wrote:
> Please eliminate the comment before microblaze_asm_output_ident().

Better yet, attach the right patch. I somehow managed to attach the
wrong one. Re-submitted with proper $SUBJECT and all that. Sorry for
the confusion!

Ciao!
Steven

Patch

Index: target.def
===================================================================
--- target.def	(revision 188182)
+++ target.def	(working copy)
@@ -427,6 +427,15 @@  DEFHOOK
  void, (rtx x),
  default_asm_output_anchor)
 
+DEFHOOK
+(output_ident,
+ "Generate a string based on @var{name}, suitable for the @samp{#ident} \
+ directive, or the equivalent directive or pragma in non-C-family languages. \
+ If this hook is not defined, nothing is output for the @samp{#ident} \
+ directive.",
+ void, (const char *name),
+ hook_void_constcharptr)
+
 /* Output a DTP-relative reference to a TLS symbol.  */
 DEFHOOK
 (output_dwarf_dtprel,
Index: targhooks.h
===================================================================
--- targhooks.h	(revision 188182)
+++ targhooks.h	(working copy)
@@ -178,3 +178,6 @@  extern enum machine_mode default_get_reg_raw_mode(
 
 extern void *default_get_pch_validity (size_t *);
 extern const char *default_pch_valid_p (const void *, size_t);
+
+extern void default_asm_output_ident_directive (const char*);
+
Index: varasm.c
===================================================================
--- varasm.c	(revision 188182)
+++ varasm.c	(working copy)
@@ -7411,4 +7411,27 @@  default_elf_fini_array_asm_out_destructor (rtx sym
   assemble_addr_to_section (symbol, sec);
 }
 
+/* Default TARGET_ASM_OUTPUT_IDENT hook.
+
+   This is a bit of a cheat.  The real default is a no-op, but this
+   hook is the default for all targets with a .ident directive.  */
+
+void
+default_asm_output_ident_directive (const char *ident_str)
+{
+  const char *ident_asm_op = "\t.ident\t";
+
+  /* If we are still in the front end, do not write out the string
+     to asm_out_file.  Instead, add a fake top-level asm statement.
+     This allows the front ends to use this hook without actually
+     writing to asm_out_file, to handle #ident or Pragma Ident.  */
+  if (cgraph_state == CGRAPH_STATE_PARSING)
+    {
+      char *buf = ACONCAT ((ident_asm_op, "\"", ident_str, "\"\n", NULL));
+      add_asm_node (build_string (strlen (buf), buf));
+    }
+  else
+    fprintf (asm_out_file, "%s\"%s\"\n", ident_asm_op, ident_str);
+}
+
 #include "gt-varasm.h"
Index: output.h
===================================================================
--- output.h	(revision 188182)
+++ output.h	(working copy)
@@ -641,4 +641,8 @@  extern int default_address_cost (rtx, bool);
 /* Output stack usage information.  */
 extern void output_stack_usage (void);
 
+/* In toplev.c:  */
+/* True if the GCC .ident should not be printed.  This is only used by CRIS.  */
+extern bool flag_no_gcc_ident;
+
 #endif /* ! GCC_OUTPUT_H */
Index: toplev.c
===================================================================
--- toplev.c	(revision 188182)
+++ toplev.c	(working copy)
@@ -107,6 +107,9 @@  static void compile_file (void);
 /* True if we don't need a backend (e.g. preprocessing only).  */
 static bool no_backend;
 
+/* True if the GCC .ident should not be printed.  This is only used by CRIS.  */
+bool flag_no_gcc_ident = false;
+
 /* Length of line when printing switch values.  */
 #define MAX_LINE 75
 
@@ -650,17 +653,17 @@  compile_file (void)
   /* Attach a special .ident directive to the end of the file to identify
      the version of GCC which compiled this code.  The format of the .ident
      string is patterned after the ones produced by native SVR4 compilers.  */
-#ifdef IDENT_ASM_OP
-  if (!flag_no_ident)
+  if (!flag_no_ident && !flag_no_gcc_ident)
     {
       const char *pkg_version = "(GNU) ";
+      char *ident_str;
 
       if (strcmp ("(GCC) ", pkgversion_string))
 	pkg_version = pkgversion_string;
-      fprintf (asm_out_file, "%s\"GCC: %s%s\"\n",
-	       IDENT_ASM_OP, pkg_version, version_string);
+
+      ident_str = ACONCAT (("GCC: ", pkg_version, version_string, NULL));
+      targetm.asm_out.output_ident (ident_str);
     }
-#endif
 
   /* Invoke registered plugin callbacks.  */
   invoke_plugin_callbacks (PLUGIN_FINISH_UNIT, NULL);
Index: doc/tm.texi.in
===================================================================
--- doc/tm.texi.in	(revision 188182)
+++ doc/tm.texi.in	(working copy)
@@ -7308,12 +7308,6 @@  the assembler source.  So you can use it to canoni
 of the filename using this macro.
 @end defmac
 
-@defmac ASM_OUTPUT_IDENT (@var{stream}, @var{string})
-A C statement to output something to the assembler file to handle a
-@samp{#ident} directive containing the text @var{string}.  If this
-macro is not defined, nothing is output for a @samp{#ident} directive.
-@end defmac
-
 @hook TARGET_ASM_NAMED_SECTION
 Output assembly directives to switch to section @var{name}.  The section
 should have attributes as specified by @var{flags}, which is a bit mask
Index: doc/tm.texi
===================================================================
--- doc/tm.texi	(revision 188182)
+++ doc/tm.texi	(working copy)
@@ -5847,6 +5847,10 @@  value is 0.
 @end deftypevr
 
 @deftypefn {Target Hook} void TARGET_ASM_OUTPUT_ANCHOR (rtx @var{x})
+
+@deftypefn {Target Hook} void TARGET_ASM_OUTPUT_IDENT (const char *@var{name})
+Generate a string based on @var{name}, suitable for the @samp{#ident}  directive, or the equivalent directive or pragma in non-C-family languages.  If this hook is not defined, nothing is output for the @samp{#ident}  directive.
+@end deftypefn
 Write the assembly code to define section anchor @var{x}, which is a
 @code{SYMBOL_REF} for which @samp{SYMBOL_REF_ANCHOR_P (@var{x})} is true.
 The hook is called with the assembly output position set to the beginning
@@ -7398,12 +7402,6 @@  the assembler source.  So you can use it to canoni
 of the filename using this macro.
 @end defmac
 
-@defmac ASM_OUTPUT_IDENT (@var{stream}, @var{string})
-A C statement to output something to the assembler file to handle a
-@samp{#ident} directive containing the text @var{string}.  If this
-macro is not defined, nothing is output for a @samp{#ident} directive.
-@end defmac
-
 @deftypefn {Target Hook} void TARGET_ASM_NAMED_SECTION (const char *@var{name}, unsigned int @var{flags}, tree @var{decl})
 Output assembly directives to switch to section @var{name}.  The section
 should have attributes as specified by @var{flags}, which is a bit mask
Index: config/elfos.h
===================================================================
--- config/elfos.h	(revision 188182)
+++ config/elfos.h	(working copy)
@@ -83,11 +83,9 @@  see the files COPYING3 and COPYING.RUNTIME respect
 
 /* Output #ident as a .ident.  */
 
-#define ASM_OUTPUT_IDENT(FILE, NAME) \
-  fprintf (FILE, "%s\"%s\"\n", IDENT_ASM_OP, NAME);
+#undef TARGET_ASM_OUTPUT_IDENT
+#define TARGET_ASM_OUTPUT_IDENT default_asm_output_ident_directive
 
-#define IDENT_ASM_OP "\t.ident\t"
-
 #undef  SET_ASM_OP
 #define SET_ASM_OP	"\t.set\t"
 
Index: config/i386/djgpp.h
===================================================================
--- config/i386/djgpp.h	(revision 188182)
+++ config/i386/djgpp.h	(working copy)
@@ -31,10 +31,6 @@  along with GCC; see the file COPYING3.  If not see
 #undef DATA_SECTION_ASM_OP
 #define DATA_SECTION_ASM_OP "\t.section .data"
 
-/* Define the name of the .ident op.  */
-#undef IDENT_ASM_OP
-#define IDENT_ASM_OP "\t.ident\t"
-
 /* Enable alias attribute support.  */
 #ifndef SET_ASM_OP
 #define SET_ASM_OP "\t.set\t"
Index: config/i386/gas.h
===================================================================
--- config/i386/gas.h	(revision 188182)
+++ config/i386/gas.h	(working copy)
@@ -47,7 +47,8 @@  along with GCC; see the file COPYING3.  If not see
 
 /* Output #ident as a .ident.  */
 
-#define ASM_OUTPUT_IDENT(FILE, NAME) fprintf (FILE, "\t.ident \"%s\"\n", NAME);
+#undef TARGET_ASM_OUTPUT_IDENT
+#define TARGET_ASM_OUTPUT_IDENT default_asm_output_ident_directive
 
 /* In the past there was confusion as to what the argument to .align was
    in GAS.  For the last several years the rule has been this: for a.out
Index: config/arm/aout.h
===================================================================
--- config/arm/aout.h	(revision 188182)
+++ config/arm/aout.h	(working copy)
@@ -366,12 +366,6 @@ 
   asm_output_aligned_bss (STREAM, DECL, NAME, SIZE, ALIGN)
 #endif
 
-/* Output a #ident directive.  */
-#ifndef ASM_OUTPUT_IDENT
-#define ASM_OUTPUT_IDENT(STREAM,STRING)  \
-  asm_fprintf (STREAM, "%@ - - - ident %s\n", STRING)
-#endif
-     
 #ifndef ASM_COMMENT_START
 #define ASM_COMMENT_START 	"@"
 #endif
Index: config/sparc/sparc.h
===================================================================
--- config/sparc/sparc.h	(revision 188182)
+++ config/sparc/sparc.h	(working copy)
@@ -1709,12 +1709,10 @@  do {									\
     ASM_OUTPUT_ALIGNED_LOCAL (FILE, NAME, SIZE, ALIGN);		\
   } while (0)
 
-#define IDENT_ASM_OP "\t.ident\t"
-
 /* Output #ident as a .ident.  */
 
-#define ASM_OUTPUT_IDENT(FILE, NAME) \
-  fprintf (FILE, "%s\"%s\"\n", IDENT_ASM_OP, NAME);
+#undef TARGET_ASM_OUTPUT_IDENT
+#define TARGET_ASM_OUTPUT_IDENT default_asm_output_ident_directive
 
 /* Prettify the assembly.  */
 
Index: config/picochip/picochip.h
===================================================================
--- config/picochip/picochip.h	(revision 188182)
+++ config/picochip/picochip.h	(working copy)
@@ -488,7 +488,8 @@  do {
 #define ASM_APP_ON "// High-level ASM start\n"
 #define ASM_APP_OFF "// High-level ASM end\n"
 
-#define ASM_OUTPUT_IDENT(STREAM,STRING) fprintf(STREAM, ".ident %s\n", STRING)
+#undef TARGET_ASM_OUTPUT_IDENT
+#define TARGET_ASM_OUTPUT_IDENT default_asm_output_ident_directive
 
 /* Output of Data  */
 
Index: config/cris/cris.h
===================================================================
--- config/cris/cris.h	(revision 188182)
+++ config/cris/cris.h	(working copy)
@@ -851,14 +851,6 @@  enum cris_pic_symbol_type
 
 /* Node: File Framework */
 
-/* We don't want an .ident for gcc.  To avoid that but still support
-   #ident, we override ASM_OUTPUT_IDENT and, since the gcc .ident is its
-   only use besides ASM_OUTPUT_IDENT, undef IDENT_ASM_OP from elfos.h.  */
-#undef IDENT_ASM_OP
-#undef ASM_OUTPUT_IDENT
-#define ASM_OUTPUT_IDENT(FILE, NAME) \
-  fprintf (FILE, "%s\"%s\"\n", "\t.ident\t", NAME);
-
 #define ASM_APP_ON "#APP\n"
 
 #define ASM_APP_OFF "#NO_APP\n"
Index: config/cris/cris.c
===================================================================
--- config/cris/cris.c	(revision 188182)
+++ config/cris/cris.c	(working copy)
@@ -2530,6 +2530,10 @@  cris_asm_output_case_end (FILE *stream, int num, r
 static void
 cris_option_override (void)
 {
+  /* We don't want an .ident for gcc.
+     It isn't really clear anymore why not.  */
+  flag_no_gcc_ident = true;
+
   if (cris_max_stackframe_str)
     {
       cris_max_stackframe = atoi (cris_max_stackframe_str);
Index: config/microblaze/microblaze-protos.h
===================================================================
--- config/microblaze/microblaze-protos.h	(revision 188182)
+++ config/microblaze/microblaze-protos.h	(working copy)
@@ -48,7 +48,7 @@  extern int microblaze_regno_ok_for_base_p (int, in
 extern HOST_WIDE_INT microblaze_initial_elimination_offset (int, int);
 extern void microblaze_declare_object (FILE *, const char *, const char *,
    const char *, int);
-extern void microblaze_asm_output_ident (FILE *, const char *);
+extern void microblaze_asm_output_ident (const char *);
 #endif  /* RTX_CODE */
 
 /* Declare functions in microblaze-c.c.  */
Index: config/microblaze/microblaze.c
===================================================================
--- config/microblaze/microblaze.c	(revision 188182)
+++ config/microblaze/microblaze.c	(working copy)
@@ -47,6 +47,7 @@ 
 #include "df.h"
 #include "optabs.h"
 #include "diagnostic-core.h"
+#include "cgraph.h"
 
 #define MICROBLAZE_VERSION_COMPARE(VA,VB) strcasecmp (VA, VB)
 
@@ -2737,15 +2738,38 @@  microblaze_return_addr (int count, rtx frame ATTRI
 }
 
 /* Put string into .sdata2 if below threashold.  */
+/* ??? Is this really worth supporting?  The most common use of
+   .ident is for the GCC version string, which is typically much
+   longer than MICROBLASE_SECTION_THRESHOLD.  Likewise for user
+   .ident strings.  Oh well...  */
 void 
-microblaze_asm_output_ident (FILE *file ATTRIBUTE_UNUSED, const char *string)
+microblaze_asm_output_ident (const char *string)
 {
+  const char *section_asm_op;
+  section *sec;
+
   int size = strlen (string) + 1;
   if (size <= microblaze_section_threshold)
-    switch_to_section (sdata2_section);
+    {
+      sec = sdata2_section;
+      section_asm_op = SDATA2_SECTION_ASM_OP;
+    }
   else
-    switch_to_section (readonly_data_section);
-  assemble_string (string, size);
+    {
+      sec = readonly_data_section;
+      section_asm_op = READONLY_DATA_SECTION_ASM_OP;
+    }
+
+  if (cgraph_state == CGRAPH_STATE_PARSING)
+    {
+      char *buf = ACONCAT ((section_asm_op, "\n\t.ascii \"", string, "\"\n", NULL));
+      add_asm_node (build_string (strlen (buf), buf));
+    }
+  else
+    {
+      switch_to_section (sec);
+      assemble_string (string, size);
+    }
 }
 
 static void
Index: config/microblaze/microblaze.h
===================================================================
--- config/microblaze/microblaze.h	(revision 188182)
+++ config/microblaze/microblaze.h	(working copy)
@@ -696,8 +696,8 @@  do {									\
 #define ASCII_DATA_ASM_OP		"\t.ascii\t"
 #define STRING_ASM_OP			"\t.asciz\t"
 
-#define ASM_OUTPUT_IDENT(FILE, STRING)					\
-  microblaze_asm_output_ident (FILE, STRING)
+#undef TARGET_ASM_OUTPUT_IDENT
+#define TARGET_ASM_OUTPUT_IDENT microblaze_asm_output_ident
 
 /* Default to -G 8 */
 #ifndef MICROBLAZE_DEFAULT_GVALUE
Index: config/mips/mips-protos.h
===================================================================
--- config/mips/mips-protos.h	(revision 188182)
+++ config/mips/mips-protos.h	(working copy)
@@ -264,6 +264,8 @@  extern void mips_declare_object (FILE *, const cha
 extern void mips_declare_object_name (FILE *, const char *, tree);
 extern void mips_finish_declare_object (FILE *, tree, int, int);
 
+extern void mips_asm_output_ident (const char *);
+
 extern bool mips_small_data_pattern_p (rtx);
 extern rtx mips_rewrite_small_data (rtx);
 extern HOST_WIDE_INT mips_initial_elimination_offset (int, int);
Index: config/mips/mips.c
===================================================================
--- config/mips/mips.c	(revision 188182)
+++ config/mips/mips.c	(working copy)
@@ -58,6 +58,7 @@  along with GCC; see the file COPYING3.  If not see
 #include "diagnostic.h"
 #include "target-globals.h"
 #include "opts.h"
+#include "cgraph.h"
 
 /* True if X is an UNSPEC wrapper around a SYMBOL_REF or LABEL_REF.  */
 #define UNSPEC_ADDRESS_P(X)					\
@@ -3098,6 +3099,25 @@  mips_legitimize_move (enum machine_mode mode, rtx
   return false;
 }
 
+/* Output #ident as a string in the read-only data section.  */
+void
+mips_asm_output_ident (const char *string)
+{
+  if (cgraph_state == CGRAPH_STATE_PARSING)
+    {
+      const char *section_asm_op = READONLY_DATA_SECTION_ASM_OP;
+      char *buf = ACONCAT ((section_asm_op, "\n\t.ascii \"", string, "\"\n", NULL));
+      add_asm_node (build_string (strlen (buf), buf));
+    }
+  else
+    {
+      int size = strlen (string) + 1;
+      switch_to_section (readonly_data_section);
+      assemble_string (string, size);
+    }
+}
+
+
 /* Return true if value X in context CONTEXT is a small-data address
    that can be rewritten as a LO_SUM.  */
 
Index: config/mips/mips.h
===================================================================
--- config/mips/mips.h	(revision 188182)
+++ config/mips/mips.h	(working copy)
@@ -2675,14 +2675,9 @@  do {									\
 #define ASM_OUTPUT_ASCII mips_output_ascii
 
 /* Output #ident as a in the read-only data section.  */
-#undef  ASM_OUTPUT_IDENT
-#define ASM_OUTPUT_IDENT(FILE, STRING)					\
-{									\
-  const char *p = STRING;						\
-  int size = strlen (p) + 1;						\
-  switch_to_section (readonly_data_section);				\
-  assemble_string (p, size);						\
-}
+#undef TARGET_ASM_OUTPUT_IDENT
+#define TARGET_ASM_OUTPUT_IDENT mips_asm_output_ident
+
 
 /* Default to -G 8 */
 #ifndef MIPS_DEFAULT_GVALUE
Index: config/mips/sde.h
===================================================================
--- config/mips/sde.h	(revision 188182)
+++ config/mips/sde.h	(working copy)
@@ -97,16 +97,10 @@  along with GCC; see the file COPYING3.  If not see
 /* Use periods rather than dollar signs in special g++ assembler names.  */
 #define NO_DOLLAR_IN_LABEL
 
-/* Attach a special .ident directive to the end of the file to identify
-   the version of GCC which compiled this code.  */
-#undef IDENT_ASM_OP
-#define IDENT_ASM_OP "\t.ident\t"
-
 /* Output #ident string into the ELF .comment section, so it doesn't
    form part of the load image, and so that it can be stripped.  */
-#undef ASM_OUTPUT_IDENT
-#define ASM_OUTPUT_IDENT(STREAM, STRING) \
-  fprintf (STREAM, "%s\"%s\"\n", IDENT_ASM_OP, STRING);
+#undef TARGET_ASM_OUTPUT_IDENT
+#define TARGET_ASM_OUTPUT_IDENT default_asm_output_ident_directive
 
 /* Currently we don't support 128bit long doubles, so for now we force
    n32 to be 64bit.  */
Index: config/rx/rx.c
===================================================================
--- config/rx/rx.c	(revision 188182)
+++ config/rx/rx.c	(working copy)
@@ -52,6 +52,7 @@ 
 #include "target-def.h"
 #include "langhooks.h"
 #include "opts.h"
+#include "cgraph.h"

 static unsigned int rx_gp_base_regnum_val = INVALID_REGNUM;
 static unsigned int rx_pid_base_regnum_val = INVALID_REGNUM;

@@ -1734,6 +1735,29 @@  rx_output_function_prologue (FILE * file,
     asm_fprintf (file, "\t; Note: Calls __builtin_eh_return.\n");
 }
 
+/* Output a string for the #ident directive.  */
+
+static void 
+rx_asm_output_ident (const char *string)
+{
+  const char *ident_asm_op;
+
+  if (TARGET_AS100_SYNTAX
+      && cgraph_state != CGRAPH_STATE_FINISHED)
+    ident_asm_op = ASM_COMMENT_START "\t.ident \t";
+  else if (TARGET_AS100_SYNTAX)
+    ident_asm_op = "\t.END\t; Built by: ";
+  else
+    ident_asm_op = "\t.ident\t";
+
+  buf = ACONCAT ((ident_asm_op, string, "\n", NULL));
+
+  if (cgraph_state == CGRAPH_STATE_PARSING)
+    add_asm_node (build_string (strlen (buf), buf));
+  else
+    assemble_string (buf, strlen (buf));
+}
+
 /* Generate a POPM or RTSD instruction that matches the given operands.  */
 
 void
@@ -3281,6 +3305,9 @@  rx_adjust_insn_length (rtx insn, int current_lengt
 #undef  TARGET_LEGITIMIZE_ADDRESS
 #define TARGET_LEGITIMIZE_ADDRESS		rx_legitimize_address
 
+#undef  TARGET_ASM_OUTPUT_IDENT
+#define TARGET_ASM_OUTPUT_IDENT			rx_asm_output_ident
+
 struct gcc_target targetm = TARGET_INITIALIZER;
 
 #include "gt-rx.h"
Index: config/rx/rx.h
===================================================================
--- config/rx/rx.h	(revision 188182)
+++ config/rx/rx.h	(working copy)
@@ -602,10 +602,6 @@  typedef unsigned int CUMULATIVE_ARGS;
     }							\
   while (0)
 
-#undef  IDENT_ASM_OP
-#define IDENT_ASM_OP  (TARGET_AS100_SYNTAX \
-		       ? "\t.END\t; Built by: ": "\t.ident\t")
-
 /* For PIC put jump tables into the text section so that the offsets that
    they contain are always computed between two same-section symbols.  */
 #define JUMP_TABLES_IN_TEXT_SECTION	(TARGET_PID || flag_pic)
Index: c-family/c-lex.c
===================================================================
--- c-family/c-lex.c	(revision 188182)
+++ c-family/c-lex.c	(working copy)
@@ -26,7 +26,6 @@  along with GCC; see the file COPYING3.  If not see
 
 #include "tree.h"
 #include "input.h"
-#include "output.h" /* for asm_out_file */
 #include "c-common.h"
 #include "flags.h"
 #include "timevar.h"
@@ -165,18 +164,16 @@  cb_ident (cpp_reader * ARG_UNUSED (pfile),
 	  unsigned int ARG_UNUSED (line),
 	  const cpp_string * ARG_UNUSED (str))
 {
-#ifdef ASM_OUTPUT_IDENT
   if (!flag_no_ident)
     {
       /* Convert escapes in the string.  */
       cpp_string cstr = { 0, 0 };
       if (cpp_interpret_string (pfile, str, 1, &cstr, CPP_STRING))
 	{
-	  ASM_OUTPUT_IDENT (asm_out_file, (const char *) cstr.text);
+	  targetm.asm_out.output_ident ((const char *) cstr.text);
 	  free (CONST_CAST (unsigned char *, cstr.text));
 	}
     }
-#endif
 }
 
 /* Called at the start of every non-empty line.  TOKEN is the first
Index: ada/gcc-interface/trans.c
===================================================================
--- ada/gcc-interface/trans.c	(revision 188182)
+++ ada/gcc-interface/trans.c	(working copy)
@@ -36,6 +36,7 @@ 
 #include "gimple.h"
 #include "bitmap.h"
 #include "cgraph.h"
+#include "target.h"
 
 #include "ada.h"
 #include "adadecode.h"
@@ -647,12 +648,9 @@  gigi (Node_Id gnat_root, int max_gnat_node, int nu
   VEC_safe_push (tree, gc, gnu_program_error_label_stack, NULL_TREE);
 
   /* Process any Pragma Ident for the main unit.  */
-#ifdef ASM_OUTPUT_IDENT
   if (Present (Ident_String (Main_Unit)))
-    ASM_OUTPUT_IDENT
-      (asm_out_file,
-       TREE_STRING_POINTER (gnat_to_gnu (Ident_String (Main_Unit))));
-#endif
+    targetm.asm_out.output_ident
+      (TREE_STRING_POINTER (gnat_to_gnu (Ident_String (Main_Unit))));
 
   /* If we are using the GCC exception mechanism, let GCC know.  */
   if (Exception_Mechanism == Back_End_Exceptions)