* basic-block.c (tail_recursion_label_list): Don't declare.

	(CLEANUP_PRE_SIBCALL): Remove.  Renumber the other CLEANUP_*
	accordingly.
	* cfgbuild.c (find_label_refs): Remove.
	(find_basic_blocks_1): Don't handle CALL_PLACEHOLDER insns.
	* cfgcleanup.c (tail_recursion_label_p): Remove.
	(merge_blocks_move): Do not check for tail recursion.
	(try_optimize_cfg): Likewise.
	(cleanup_cfg): Never handle CLEANUP_PRE_SIBCALL.
	* cfgrtl.c (tail_recursion_label_list): Remove.
	* except.c (remove_unreachable_regions): Don't handle
	CALL_PLACEHOLDER insns.
	(convert_from_eh_region_ranges_1, can_throw_internal,
	can_throw_external): Likewise.
	* function.c (free_after_compilation): Don't clear
	x_tail_recursion_label.
	(fixup_var_refs_insns): Don't handle CALL_PLACEHOLDER insns.
	(identify_blocks_1): Don't recurse for CALL_PLACEHOLDER insns.
	(reorder_blocks_1): Likewise.
	* function.h (struct function): Remove x_tail_recursion_label
	member.  Don't define tail_recursion_label.
	* jump.c (mark_all_labels): Don't handle CALL_PLACEHOLDER insns.
	* print-rtl.c (print_rtx): Likewise.
	* rtl.def (CALL_PLACEHOLDER): Remove.
	* rtl.h (sibcall_use_t): Remove enum.
	(optimize_sibling_and_tail_recursive_calls,
	replace_call_placeholder): Remove function prototypes.
	* stmt.c (tail_recursion_args): Remove.
	(optimize_tail_recursion): Remove.
	(expand_return): Don't check for possible tail recursion.
	* tree.h (optimize_tail_recursion): Remove prototype.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@82597 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 1 insertions, 53 deletions

diff --git a/gcc/except.c b/gcc/except.c
index e3116952ff3..f3bc4ef3f2c 100644
--- a/gcc/except.c
+++ b/gcc/except.c
@@ -1157,18 +1157,7 @@ remove_unreachable_regions (rtx insns)
     }
 
   for (insn = insns; insn; insn = NEXT_INSN (insn))
-    {
-      reachable[uid_region_num[INSN_UID (insn)]] = true;
-
-      if (GET_CODE (insn) == CALL_INSN
-	  && GET_CODE (PATTERN (insn)) == CALL_PLACEHOLDER)
-	for (i = 0; i < 3; i++)
-	  {
-	    rtx sub = XEXP (PATTERN (insn), i);
-	    for (; sub ; sub = NEXT_INSN (sub))
-	      reachable[uid_region_num[INSN_UID (sub)]] = true;
-	  }
-    }
+    reachable[uid_region_num[INSN_UID (insn)]] = true;
 
   for (i = cfun->eh->last_region_number; i > 0; --i)
     {
@@ -1259,8 +1248,6 @@ convert_from_eh_region_ranges_1 (rtx *pinsns, int *orig_sp, int cur)
 	      else
 		cur = *--sp;
 
-	      /* Removing the first insn of a CALL_PLACEHOLDER sequence
-		 requires extra care to adjust sequence start.  */
 	      if (insn == *pinsns)
 		*pinsns = next;
 	      remove_insn (insn);
@@ -1285,17 +1272,6 @@ convert_from_eh_region_ranges_1 (rtx *pinsns, int *orig_sp, int cur)
 	      REG_NOTES (insn) = alloc_EXPR_LIST (REG_EH_REGION, GEN_INT (cur),
 						  REG_NOTES (insn));
 	    }
-
-	  if (GET_CODE (insn) == CALL_INSN
-	      && GET_CODE (PATTERN (insn)) == CALL_PLACEHOLDER)
-	    {
-	      convert_from_eh_region_ranges_1 (&XEXP (PATTERN (insn), 0),
-					       sp, cur);
-	      convert_from_eh_region_ranges_1 (&XEXP (PATTERN (insn), 1),
-					       sp, cur);
-	      convert_from_eh_region_ranges_1 (&XEXP (PATTERN (insn), 2),
-					       sp, cur);
-	    }
 	}
     }
 
@@ -3131,20 +3107,6 @@ can_throw_internal (rtx insn)
       && GET_CODE (PATTERN (insn)) == SEQUENCE)
     insn = XVECEXP (PATTERN (insn), 0, 0);
 
-  if (GET_CODE (insn) == CALL_INSN
-      && GET_CODE (PATTERN (insn)) == CALL_PLACEHOLDER)
-    {
-      int i;
-      for (i = 0; i < 3; ++i)
-	{
-	  rtx sub = XEXP (PATTERN (insn), i);
-	  for (; sub ; sub = NEXT_INSN (sub))
-	    if (can_throw_internal (sub))
-	      return true;
-	}
-      return false;
-    }
-
   /* Every insn that might throw has an EH_REGION note.  */
   note = find_reg_note (insn, REG_EH_REGION, NULL_RTX);
   if (!note || INTVAL (XEXP (note, 0)) <= 0)
@@ -3192,20 +3154,6 @@ can_throw_external (rtx insn)
       && GET_CODE (PATTERN (insn)) == SEQUENCE)
     insn = XVECEXP (PATTERN (insn), 0, 0);
 
-  if (GET_CODE (insn) == CALL_INSN
-      && GET_CODE (PATTERN (insn)) == CALL_PLACEHOLDER)
-    {
-      int i;
-      for (i = 0; i < 3; ++i)
-	{
-	  rtx sub = XEXP (PATTERN (insn), i);
-	  for (; sub ; sub = NEXT_INSN (sub))
-	    if (can_throw_external (sub))
-	      return true;
-	}
-      return false;
-    }
-
   note = find_reg_note (insn, REG_EH_REGION, NULL_RTX);
   if (!note)
     {