haifa-sched.c: Convert to target hooks.

	* haifa-sched.c: Convert to target hooks.  Macros replaced
	are ISSUE_RATE, ADJUST_COST, ADJUST_PRIORITY, MD_SCHED_INIT,
	MD_SCHED_REORDER, MD_SCHED_REORDER2, MD_SCHED_VARIABLE_ISSUE,
	MD_SCHED_FINISH, and HAVE_cycle_display.
	* target-def.h (TARGET_SCHED_ADJUST_COST,
	TARGET_SCHED_ADJUST_PRIORITY, TARGET_SCHED_ISSUE_RATE,
	TARGET_SCHED_VARIABLE_ISSUE, TARGET_SCHED_INIT,
	TARGET_SCHED_FINISH, TARGET_SCHED_REORDER,
	TARGET_SCHED_REORDER2, TARGET_SCHED_CYCLE_DISPLAY):
	New hook #defines to be overridden.
	(TARGET_SCHED): Bring them all together.
	(TARGET_INITIALIZER): Update.
	* target.h: Don't forward declare struct rtx_def.  Use 'rtx'
	instead of 'struct rtx_def *' throughout.
	(struct sched): New set of hooks for the scheduler.
	* Makefile.in (haifa-sched.o): Depend on target.h.
	* doc/tm.texi: Document the new scheduler hooks, together in
	their own section, instead of scattered around.
	Fix a bunch of underfull/overfull hboxes.

	* a29k.h, alpha.h, arm.h, c4x.h, convex.h, d30v.h, i386.h,
	ia64.h, m32r.h, m88k.h, mips.h, pa.h, rs6000.h, s390.h, sh.h,
	sparc.h: Don't define any of the old scheduler macros.

	* a29k.c, alpha.c, arm.c, c4x.c, convex.c, d30v.c, i386.c,
	ia64.c, m32r.c, m88k.c, mips.c, pa.c, rs6000.c, s390.c, sh.c,
	sparc.c: Create hook functions from code extracted from
	corresponding target header, or make existing hooks static, as
	appropriate.  Set the appropriate entries in targetm.

	* alpha-protos.h, arm-protos.h, c4x-protos.h, d30v-protos.h,
	i386-protos.h, ia64-protos.h, m32r-protos.h, pa-protos.h,
	rs6000-protos.h, s390-protos.h, sparc-protos.h:
	Remove prototypes for functions which are now static.

	* d30v.h, d30v.c, m32r.h, m32r.c: Remove #ifdef HAIFA and
	related gunk; the Haifa scheduler is now the only choice.

From-SVN: r45009

1 files changed, 22 insertions, 0 deletions

diff --git a/gcc/config/mips/mips.c b/gcc/config/mips/mips.c
index d9cdcf5..268c7f4 100644
--- a/gcc/config/mips/mips.c
+++ b/gcc/config/mips/mips.c
@@ -126,6 +126,7 @@ static int iris_section_align_entry_eq		PARAMS ((const PTR, const PTR));
 static hashval_t iris_section_align_entry_hash	PARAMS ((const PTR));
 static int iris6_section_align_1		PARAMS ((void **, void *));
 #endif
+static int mips_adjust_cost			PARAMS ((rtx, rtx, rtx, int));
 
 /* Global variables for machine-dependent things.  */
 
@@ -455,6 +456,9 @@ enum reg_class mips_char_to_class[256] =
 #undef TARGET_ASM_FUNCTION_EPILOGUE
 #define TARGET_ASM_FUNCTION_EPILOGUE mips_output_function_epilogue
 
+#undef TARGET_SCHED_ADJUST_COST
+#define TARGET_SCHED_ADJUST_COST mips_adjust_cost
+
 struct gcc_target targetm = TARGET_INITIALIZER;
 
 /* Return truth value of whether OP can be used as an operands
@@ -9743,6 +9747,23 @@ mips_parse_cpu (cpu_string)
   return cpu;
 }
 
+/* Adjust the cost of INSN based on the relationship between INSN that
+   is dependent on DEP_INSN through the dependence LINK.  The default
+   is to make no adjustment to COST.
+
+   On the MIPS, ignore the cost of anti- and output-dependencies.  */
+static int
+mips_adjust_cost (insn, link, dep, cost)
+     rtx insn ATTRIBUTE_UNUSED;
+     rtx link;
+     rtx dep ATTRIBUTE_UNUSED;
+     int cost;
+{
+  if (REG_NOTE_KIND (link) != 0)
+    return 0;	/* Anti or output dependence.  */
+  return cost;
+}
+
 /* Cover function for UNIQUE_SECTION.  */
 
 void
@@ -9815,6 +9836,7 @@ mips_unique_section (decl, reloc)
 
   DECL_SECTION_NAME (decl) = build_string (len, string);
 }
+
 
 #ifdef TARGET_IRIX6
 /* Output assembly to switch to section NAME with attribute FLAGS.  */