stupid.c: Die die die.

	* stupid.c: Die die die.
	* Makefile.in (OBJS): Remove stupid.o.
	(stupid.o): Likewise.

	* except.c (emit_eh_context): Don't emit USEs for stupid.
	* explow.c (probe_stack_range): Likewise.
	* flags.h (obey_regdecls): Remove.
	* flow.c (find_basic_blocks): Don't run try_merge_blocks
	when not optimizing.
	(life_analysis): Limit data collection when not optimizing.
	(mark_regs_live_at_end): Always mark the return value registers.
	(mark_used_regs): Remove dummy RETURN case.
	(print_rtl_with_bb): Don't consult obey_regdecls.
	* function.c (use_variable, use_variable_after): Remove.
	(assign_parms): Consult optimize not obey_regdecls.
	(expand_function_start): Don't emit USEs for stupid.
	(expand_function_end): Likewise.
	* global.c (build_insn_chain): Export.
	* integrate.c (expand_inline_function): Kill return-value USE
	handling code.
	* jump.c (jump_optimize_1): Do simple jump optimizations and
	dead code elimination.
	(calculate_can_reach_end): Remove check_deleted argument.
	(delete_insn): Patch out insns even when not optimizing.
	* local-alloc.c (block_alloc): Don't do tying when not optimizing.
	* rtl.h (use_variable, use_variable_after): Remove declarations.
	(build_insn_chain): Declare.
	* stmt.c (expand_value_return): Don't emit USEs for stupid.
	(expand_end_bindings): Likewise.
	(expand_decl): Likewise.  Consult optimize not obey_regdecls.
	* toplev.c (obey_regdecls): Remove.
	(rest_of_compilation): Don't set it.  Kill stupid in favour of
	flow1, local-alloc, and reload.
	(main): Don't set obey_regdecls.

	* config/nextstep.c (handle_pragma): Likewise.

	* alpha/alpha.md (allocate_stack): Don't emit USEs for stupid.

	* arm/arm.h (CONDITIONAL_REGISTER_USAGE): Don't fix reg 0 for stupid.

From-SVN: r31499

1 files changed, 1 insertions, 19 deletions

diff --git a/gcc/stmt.c b/gcc/stmt.c
index 3cb79b1..8650953 100644
--- a/gcc/stmt.c
+++ b/gcc/stmt.c
@@ -2722,8 +2722,6 @@ expand_value_return (val)
 	emit_move_insn (return_reg, val);
     }
 
-  diddle_return_value (USE);
-
   /* Does any pending block have cleanups?  */
 
   while (block && block->data.block.cleanups == 0)
@@ -3689,14 +3687,6 @@ expand_end_bindings (vars, mark_ends, dont_jump_in)
     /* Get rid of the beginning-mark if we don't make an end-mark.  */
     NOTE_LINE_NUMBER (thisblock->data.block.first_insn) = NOTE_INSN_DELETED;
 
-  /* If doing stupid register allocation, make sure lives of all
-     register variables declared here extend thru end of scope.  */
-
-  if (obey_regdecls)
-    for (decl = vars; decl; decl = TREE_CHAIN (decl))
-      if (TREE_CODE (decl) == VAR_DECL && DECL_RTL (decl))
-	use_variable (DECL_RTL (decl));
-
   /* Restore the temporary level of TARGET_EXPRs.  */
   target_temp_slot_level = thisblock->data.block.block_target_temp_slot_level;
 
@@ -3757,7 +3747,7 @@ expand_decl (decl)
 		&& TREE_CODE (type) == REAL_TYPE)
 	   && ! TREE_THIS_VOLATILE (decl)
 	   && ! TREE_ADDRESSABLE (decl)
-	   && (DECL_REGISTER (decl) || ! obey_regdecls)
+	   && (DECL_REGISTER (decl) || optimize)
 	   /* if -fcheck-memory-usage, check all variables.  */
 	   && ! current_function_check_memory_usage)
     {
@@ -3889,15 +3879,7 @@ expand_decl (decl)
   if (TREE_READONLY (decl))
     RTX_UNCHANGING_P (DECL_RTL (decl)) = 1;
 #endif
-
-  /* If doing stupid register allocation, make sure life of any
-     register variable starts here, at the start of its scope.  */
-
-  if (obey_regdecls)
-    use_variable (DECL_RTL (decl));
 }
-
-
 
 /* Emit code to perform the initialization of a declaration DECL.  */