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, 44 insertions, 10 deletions

diff --git a/gcc/target.h b/gcc/target.h
index bc839c5c829..8d73f496ba0 100644
--- a/gcc/target.h
+++ b/gcc/target.h
@@ -44,9 +44,6 @@ Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
    to gradually reduce the amount of conditional compilation that is
    scattered throughout GCC.  */
 
-/* Forward declaration for the benefit of prototypes.  */
-struct rtx_def;
-
 struct gcc_target
 {
   /* Functions that output assembler for the target.  */
@@ -72,12 +69,52 @@ struct gcc_target
     void (* named_section) PARAMS ((const char *, unsigned int));
 
     /* Output a constructor for a symbol with a given priority.  */
-    void (* constructor) PARAMS ((struct rtx_def *, int));
+    void (* constructor) PARAMS ((rtx, int));
 
     /* Output a destructor for a symbol with a given priority.  */
-    void (* destructor) PARAMS ((struct rtx_def *, int));
+    void (* destructor) PARAMS ((rtx, int));
   } asm_out;
 
+  /* Functions relating to instruction scheduling.  */
+  struct sched
+  {
+    /* Given the current cost, COST, of an insn, INSN, calculate and
+       return a new cost based on its relationship to DEP_INSN through
+       the dependence LINK.  The default is to make no adjustment.  */
+    int (* adjust_cost) PARAMS ((rtx insn, rtx link, rtx def_insn, int cost));
+
+    /* Adjust the priority of an insn as you see fit.  Returns the new
+       priority.  */
+    int (* adjust_priority) PARAMS ((rtx, int));
+
+    /* Function which returns the maximum number of insns that can be
+       scheduled in the same machine cycle.  This must be constant
+       over an entire compilation.  The default is 1.  */
+    int (* issue_rate) PARAMS ((void));
+
+    /* Calculate how much this insn affects how many more insns we
+       can emit this cycle.  Default is they all cost the same.  */
+    int (* variable_issue) PARAMS ((FILE *, int, rtx, int));
+    
+    /* Initialize machine-dependent scheduling code.  */
+    void (* md_init) PARAMS ((FILE *, int, int));
+
+    /* Finalize machine-dependent scheduling code.  */
+    void (* md_finish) PARAMS ((FILE *, int));
+
+    /* Reorder insns in a machine-dependent fashion, in two different
+       places.  Default does nothing.  */
+    int (* reorder)  PARAMS ((FILE *, int, rtx *, int *, int));
+    int (* reorder2) PARAMS ((FILE *, int, rtx *, int *, int));
+
+    /* cycle_display is a pointer to a function which can emit
+       data into the assembly stream about the current cycle.
+       Arguments are CLOCK, the data to emit, and LAST, the last
+       insn in the new chain we're building.  Returns a new LAST.
+       The default is to do nothing.  */
+    rtx (* cycle_display) PARAMS ((int clock, rtx last));
+  } sched;
+
   /* Given two decls, merge their attributes and return the result.  */
   tree (* merge_decl_attributes) PARAMS ((tree, tree));
 
@@ -111,11 +148,8 @@ struct gcc_target
   void (* init_builtins) PARAMS ((void));
 
   /* Expand a target-specific builtin.  */
-  struct rtx_def * (* expand_builtin) PARAMS ((tree exp,
-					       struct rtx_def *target,
-					       struct rtx_def *subtarget,
-					       enum machine_mode mode,
-					       int ignore));
+  rtx (* expand_builtin) PARAMS ((tree exp, rtx target, rtx subtarget,
+				  enum machine_mode mode, int ignore));
 
   /* Given a decl, a section name, and whether the decl initializer
      has relocs, choose attributes for the section.  */