i386.md (float_truncate splitter, [...]): Add reload_completted; fix operand predicate.

	* i386.md (float_truncate splitter, and to mov splitters): Add
	reload_completted; fix operand predicate.

	* haifa-sched.c (sched_init): Do not split insns.
	* toplev.c (rest_of_compilation): Call split_all_insns before
	sched1 pass; simplify condition of post-reload splitter;
	call split_all_insn before sched2 pass.

From-SVN: r43575

4 files changed, 25 insertions, 17 deletions

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 2c2b29b..34c713a 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,13 @@
+Tue Jun 26 12:40:12 CEST 2001  Jan Hubicka  <jh@suse.cz>
+
+	* i386.md (float_truncate splitter, and to mov splitters): Add
+	reload_completed; fix operand predicate.
+
+	* haifa-sched.c (sched_init): Do not split insns.
+	* toplev.c (rest_of_compilation): Call split_all_insns before
+	sched1 pass; simplify condition of post-reload splitter;
+	call split_all_insn before sched2 pass.
+
 2001-06-26  Gabriel Dos Reis  <gdr@codesourcery.com>
 
 	* diagnostic.h (diagnostic_prefixing_rule_t): New enum type.
diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md
index 791bf9e..62f93d2 100644
--- a/gcc/config/i386/i386.md
+++ b/gcc/config/i386/i386.md
@@ -4410,7 +4410,8 @@
 	(float_truncate:SF
 	 (match_operand:DF 1 "nonimmediate_operand" "")))
    (clobber (match_operand 2 "" ""))]
-  "TARGET_80387 && !FP_REG_P (operands[0]) && !FP_REG_P (operands[1])"
+  "TARGET_80387 && reload_completed
+   && !FP_REG_P (operands[0]) && !FP_REG_P (operands[1])"
   [(set (match_dup 0) (float_truncate:SF (match_dup 1)))]
   "")
 
@@ -8310,7 +8311,7 @@
    (set_attr "mode" "SI")])
 
 (define_split
-  [(set (match_operand 0 "ext_register_operand" "")
+  [(set (match_operand 0 "register_operand" "")
 	(and (match_dup 0)
 	     (const_int -65536)))
    (clobber (reg:CC 17))]
@@ -8323,7 +8324,7 @@
 	(and (match_dup 0)
 	     (const_int -256)))
    (clobber (reg:CC 17))]
-  "(optimize_size || !TARGET_PARTIAL_REG_STALL)"
+  "(optimize_size || !TARGET_PARTIAL_REG_STALL) && reload_completed"
   [(set (strict_low_part (match_dup 1)) (const_int 0))]
   "operands[1] = gen_lowpart (QImode, operands[0]);")
 
@@ -8332,7 +8333,7 @@
 	(and (match_dup 0)
 	     (const_int -65281)))
    (clobber (reg:CC 17))]
-  "(optimize_size || !TARGET_PARTIAL_REG_STALL)"
+  "(optimize_size || !TARGET_PARTIAL_REG_STALL) && reload_completed"
   [(parallel [(set (zero_extract:SI (match_dup 0)
 				    (const_int 8)
 				    (const_int 8))
diff --git a/gcc/haifa-sched.c b/gcc/haifa-sched.c
index d795c2d..4974c22 100644
--- a/gcc/haifa-sched.c
+++ b/gcc/haifa-sched.c
@@ -1906,8 +1906,6 @@ sched_init (dump_file)
   /* Initialize issue_rate.  */
   issue_rate = ISSUE_RATE;
 
-  split_all_insns (1);
-
   /* We use LUID 0 for the fake insn (UID 0) which holds dependencies for
      pseudos which do not cross calls.  */
   old_max_uid = get_max_uid () + 1;
diff --git a/gcc/toplev.c b/gcc/toplev.c
index 6e75187..7ca7e91 100644
--- a/gcc/toplev.c
+++ b/gcc/toplev.c
@@ -3410,13 +3410,16 @@ rest_of_compilation (decl)
   timevar_pop (TV_GCSE);
 #endif
 
+  timevar_push (TV_SCHED);
+
+  split_all_insns (1);
+
 #ifdef INSN_SCHEDULING
 
   /* Print function header into sched dump now
      because doing the sched analysis makes some of the dump.  */
   if (optimize > 0 && flag_schedule_insns)
     {
-      timevar_push (TV_SCHED);
       open_dump_file (DFI_sched, decl);
 
       /* Do control and data sched analysis,
@@ -3425,15 +3428,15 @@ rest_of_compilation (decl)
       schedule_insns (rtl_dump_file);
 
       close_dump_file (DFI_sched, print_rtl_with_bb, insns);
-      timevar_pop (TV_SCHED);
-
-      ggc_collect ();
 
       /* Register lifetime information was updated as part of verifying
 	 the schedule.  */
       register_life_up_to_date = 1;
     }
 #endif
+  timevar_pop (TV_SCHED);
+
+  ggc_collect ();
 
   /* Determine if the current function is a leaf before running reload
      since this can impact optimizations done by the prologue and
@@ -3510,14 +3513,8 @@ rest_of_compilation (decl)
     }
 
   /* If optimizing, then go ahead and split insns now since we are about
-     to recompute flow information anyway.  Since we can't split insns after
-     reload, do the splitting unconditionally here to avoid gcc from losing
-     REG_DEAD notes.  */
-#ifdef STACK_REGS
-  if (1)
-#else
+     to recompute flow information anyway.  */
   if (optimize > 0)
-#endif
     {
       int old_labelnum = max_label_num ();
 
@@ -3619,6 +3616,8 @@ rest_of_compilation (decl)
       /* Do control and data sched analysis again,
 	 and write some more of the results to dump file.  */
 
+      split_all_insns (1);
+
       schedule_insns (rtl_dump_file);
 
       close_dump_file (DFI_sched2, print_rtl_with_bb, insns);