2002-10-08 Vladimir Makarov <vmakarov@redhat.com>

	    Richard Henderson  <rth@redhat.com>

	* config/ia64/ia64.h (MASK_TUNE_STOP_BITS): Rename it to
	MASK_EARLY_STOP_BITS.
	(TARGET_TUNE_STOP_BITS): Rename it to TARGET_EARLY_STOP_BITS.
	(TARGET_SWITCHES): Rename option `tune-stop-bits' to
	`early-stop-bits'.

	* config/ia64/ia64.c (ia64_dfa_new_cycle,
	final_emit_insn_group_barriers): Use TARGET_EARLY_STOP_BITS
	instead of TARGET_TUNE_STOP_BITS.

	* doc/invoke.texi: Rename option `-mtune-stop-bits' to
	`-mearly-stop-bits'.

	* config/ia64/ia64.c (automata_option "v"): Comment it.


git-svn-id: https://gcc.gnu.org/svn/gcc/branches/itanium-sched-branch@57941 138bc75d-0d04-0410-961f-82ee72b054a4

5 files changed, 37 insertions, 15 deletions

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index c71a131e182..d5cfd72d50a 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,21 @@
+2002-10-08  Vladimir Makarov  <vmakarov@redhat.com>
+	    Richard Henderson  <rth@redhat.com>
+
+	* config/ia64/ia64.h (MASK_TUNE_STOP_BITS): Rename it to
+	MASK_EARLY_STOP_BITS.
+	(TARGET_TUNE_STOP_BITS): Rename it to TARGET_EARLY_STOP_BITS.
+	(TARGET_SWITCHES): Rename option `tune-stop-bits' to
+	`early-stop-bits'.
+	
+	* config/ia64/ia64.c (ia64_dfa_new_cycle,
+	final_emit_insn_group_barriers): Use TARGET_EARLY_STOP_BITS
+	instead of TARGET_TUNE_STOP_BITS.
+	
+	* doc/invoke.texi: Rename option `-mtune-stop-bits' to
+	`-mearly-stop-bits'.
+
+	* config/ia64/ia64.c (automata_option "v"): Comment it.
+	
 2002-10-07  Vladimir Makarov  <vmakarov@redhat.com>
 
         * config/ia64/ia64.h (MASK_TUNE_STOP_BITS, TARGET_TUNE_STOP_BITS):
diff --git a/gcc/config/ia64/ia64.c b/gcc/config/ia64/ia64.c
index fc96574ddc1..87d99c8b722 100644
--- a/gcc/config/ia64/ia64.c
+++ b/gcc/config/ia64/ia64.c
@@ -5779,7 +5779,7 @@ ia64_dfa_new_cycle (dump, verbose, insn, last_clock, clock, sort_p)
       if (last_clock == clock)
 	{
 	  state_transition (curr_state, dfa_stop_insn);
-	  if (TARGET_TUNE_STOP_BITS)
+	  if (TARGET_EARLY_STOP_BITS)
 	    *sort_p = (last_scheduled_insn == NULL_RTX
 		       || GET_CODE (last_scheduled_insn) != CALL_INSN);
 	  else
@@ -6667,7 +6667,7 @@ final_emit_insn_group_barriers (dump)
 	    }
 	  else if (need_barrier_p || group_barrier_needed_p (insn))
 	    {
-	      if (TARGET_TUNE_STOP_BITS)
+	      if (TARGET_EARLY_STOP_BITS)
 		{
 		  rtx last;
 		  
diff --git a/gcc/config/ia64/ia64.h b/gcc/config/ia64/ia64.h
index eea5d1b0336..6b9ebe6beeb 100644
--- a/gcc/config/ia64/ia64.h
+++ b/gcc/config/ia64/ia64.h
@@ -91,7 +91,7 @@ extern int target_flags;
 
 #define MASK_DWARF2_ASM 0x40000000	/* test dwarf2 line info via gas.  */
 
-#define MASK_TUNE_STOP_BITS  0x00002000	/* tune stop bits for the model.  */
+#define MASK_EARLY_STOP_BITS 0x00002000 /* tune stop bits for the model.  */
 
 #define TARGET_BIG_ENDIAN	(target_flags & MASK_BIG_ENDIAN)
 
@@ -128,7 +128,7 @@ extern int ia64_tls_size;
 #define TARGET_TLS14		(ia64_tls_size == 14)
 #define TARGET_TLS22		(ia64_tls_size == 22)
 #define TARGET_TLS64		(ia64_tls_size == 64)
-#define TARGET_TUNE_STOP_BITS	(target_flags & MASK_TUNE_STOP_BITS)
+#define TARGET_EARLY_STOP_BITS	(target_flags & MASK_EARLY_STOP_BITS)
 
 #define TARGET_HPUX_LD		0
 
@@ -176,10 +176,10 @@ extern int ia64_tls_size;
       N_("Enable Dwarf 2 line debug info via GNU as")},			\
   { "no-dwarf2-asm", 	-MASK_DWARF2_ASM,				\
       N_("Disable Dwarf 2 line debug info via GNU as")},		\
-  { "tune-stop-bits", 	MASK_TUNE_STOP_BITS,				\
-      N_("Enable tuning stop bits for better scheduling")},		\
-  { "no-tune-stop-bits", 	-MASK_TUNE_STOP_BITS,			\
-      N_("Disable tuning stop bits for better scheduling")},		\
+  { "early-stop-bits", MASK_EARLY_STOP_BITS,				\
+      N_("Enable earlier placing stop bits for better scheduling")},	\
+  { "no-early-stop-bits", -MASK_EARLY_STOP_BITS,			\
+      N_("Disable earlier placing stop bits")},				\
   SUBTARGET_SWITCHES							\
   { "",			TARGET_DEFAULT | TARGET_CPU_DEFAULT,		\
       NULL }								\
diff --git a/gcc/config/ia64/ia64.md b/gcc/config/ia64/ia64.md
index ca7577de295..76c2d8b91c1 100644
--- a/gcc/config/ia64/ia64.md
+++ b/gcc/config/ia64/ia64.md
@@ -388,7 +388,10 @@
 */
 
 (automata_option "ndfa")
-(automata_option "v")
+
+;; Uncomment the following line to output automata for debugging.
+;; (automata_option "v")
+
 (automata_option "w")
 
 ;;============================================================================
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index ec9f5de9fdd..250f1358b20 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -9211,12 +9211,13 @@ useful when compiling kernel code.  A register range is specified as
 two registers separated by a dash.  Multiple register ranges can be
 specified separated by a comma.
 
-@item -mtune-stop-bits
-@itemx -mno-tune-stop-bits
-@opindex mtune-stop-bits
-@opindex mno-tune-stop-bits
-Permit to place stop bits not right before insn requiring it.  It might
-improve insn scheduling.
+@item -mearly-stop-bits
+@itemx -mno-early-stop-bits
+@opindex mearly-stop-bits
+@opindex mno-early-stop-bits
+Allow stop bits to be placed earlier than immediately preceding the
+instruction that triggered the stop bit.  This can improve instruction
+scheduling, but does not always do so.
 @end table
 
 @node D30V Options