common.opt (fdump-unnumbered-links): New.

* common.opt (fdump-unnumbered-links): New.
* doc/invoke.texi (-fdump-unnumbered-links): Document it.
* print-rtl.c (flag_dump_unnumbered_links): New.
(print_rtx): Test it.

From-SVN: r148074

gcc/ChangeLog

+2009-06-02  Alexandre Oliva  <aoliva@redhat.com>
+
+	* common.opt (fdump-unnumbered-links): New.
+	* doc/invoke.texi (-fdump-unnumbered-links): Document it.
+	* print-rtl.c (flag_dump_unnumbered_links): New.
+	(print_rtx): Test it.
+
 2009-06-02  Richard Earnshaw  <rearnsha@arm.com>
 
 	* arm.c (arm_get_frame_offsets): Prefer using r3 for padding a

gcc/common.opt

@@ -462,6 +462,10 @@ fdwarf2-cfi-asm
 Common Report Var(flag_dwarf2_cfi_asm) Init(HAVE_GAS_CFI_DIRECTIVE)
 Enable CFI tables via GAS assembler directives.
 
+fdump-unnumbered-links
+Common Report Var(flag_dump_unnumbered_links) VarExists
+Suppress output of previous and next insn numbers in debugging dumps
+
 fearly-inlining
 Common Report Var(flag_early_inlining) Init(1) Optimization
 Perform early inlining

gcc/doc/invoke.texi

@@ -275,7 +275,7 @@ Objective-C and Objective-C++ Dialects}.
 @xref{Debugging Options,,Options for Debugging Your Program or GCC}.
 @gccoptlist{-d@var{letters}  -dumpspecs  -dumpmachine  -dumpversion @gol
 -fdbg-cnt-list -fdbg-cnt=@var{counter-value-list} @gol
--fdump-noaddr -fdump-unnumbered @gol
+-fdump-noaddr -fdump-unnumbered -fdump-unnumbered-links @gol
 -fdump-translation-unit@r{[}-@var{n}@r{]} @gol
 -fdump-class-hierarchy@r{[}-@var{n}@r{]} @gol
 -fdump-ipa-all -fdump-ipa-cgraph -fdump-ipa-inline @gol
@@ -4942,6 +4942,12 @@ This makes it more feasible to use diff on debugging dumps for compiler
 invocations with different options, in particular with and without
 @option{-g}.
 
+@item -fdump-unnumbered-links
+@opindex fdump-unnumbered-links
+When doing debugging dumps (see @option{-d} option above), suppress
+instruction numbers for the links to the previous and next instructions
+in a sequence.
+
 @item -fdump-translation-unit @r{(C++ only)}
 @itemx -fdump-translation-unit-@var{options} @r{(C++ only)}
 @opindex fdump-translation-unit

gcc/print-rtl.c

@@ -60,6 +60,11 @@ const char *print_rtx_head = "";
    This must be defined here so that programs like gencodes can be linked.  */
 int flag_dump_unnumbered = 0;
 
+/* Nonzero means suppress output of instruction numbers for previous
+   and next insns in debugging dumps.
+   This must be defined here so that programs like gencodes can be linked.  */
+int flag_dump_unnumbered_links = 0;
+
 /* Nonzero means use simplified format without flags, modes, etc.  */
 int flag_simple = 0;
 
@@ -493,7 +498,10 @@ print_rtx (const_rtx in_rtx)
 		  goto do_e;
 	      }
 
-	    if (flag_dump_unnumbered)
+	    if (flag_dump_unnumbered
+		|| (flag_dump_unnumbered_links && (i == 1 || i == 2)
+		    && (INSN_P (in_rtx) || NOTE_P (in_rtx)
+			|| LABEL_P (in_rtx) || BARRIER_P (in_rtx))))
 	      fputs (" #", outfile);
 	    else
 	      fprintf (outfile, " %d", INSN_UID (sub));