function.h (struct function): Add can_throw_non_call_exceptions bit.

	* function.h (struct function): Add can_throw_non_call_exceptions bit.
	* lto-streamer-in.c (input_function): Stream it in.
	* lto-streamer-out.c (output_function): Stream it out.
	* function.c (allocate_struct_function): Set it.
	(expand_function_end): Substitute cfun->can_throw_non_call_exceptions
	for flag_non_call_exceptions.
	* cfgbuild.c (control_flow_insn_p): Likewise.
	(make_edges): Likewise.
	* cfgexpand.c (expand_stack_alignment): Likewise.
	* combine.c (distribute_notes): Likewise.
	* cse.c (cse_extended_basic_block): Likewise.
	* except.c (insn_could_throw_p): Likewise.
	* gcse.c (simple_mem): Likewise.
	* ipa-pure-const.c (check_call): Likewise.
	(check_stmt ): Likewise.
	* lower-subreg.c (lower-subreg.c): Likewise.
	* optabs.c (emit_libcall_block): Likewise.
	(prepare_cmp_insn): Likewise.
	* postreload-gcse.c (eliminate_partially_redundant_loads): Likewise.
	* postreload.c (rest_of_handle_postreload): Likewise.
	* reload1.c (reload_as_needed): Likewise.
	(emit_input_reload_insns): Likewise.
	(emit_output_reload_insns): Likewise.
	(fixup_abnormal_edges): Likewise.
	* sel-sched-ir.c (init_global_and_expr_for_insn): Likewise.
	* store-motion.c (find_moveable_store): Likewise.
	* tree-eh.c (stmt_could_throw_p): Likewise.
	(tree_could_throw_p): Likewise.
	* tree-ssa-dce.c (mark_stmt_if_obviously_necessary): Likewise.
	* config/arm/arm.c (arm_expand_prologue): Likewise.
	(thumb1_expand_prologue): Likewise.
	* config/rx/rx.md (cbranchsf4): Likewise.
	(cmpsf): Likewise.
	* config/s390/s390.c (s390_emit_prologue): Likewise.
	* tree-inline.c (initialize_cfun): Copy can_throw_non_call_exceptions.
	(inline_forbidden_into_p): New predicate.
	(expand_call_inline): Use it to forbid inlining.
	(tree_can_inline_p): Likewise.

From-SVN: r159847

1 files changed, 7 insertions, 3 deletions

diff --git a/gcc/function.c b/gcc/function.c
index 2c87dec..a39ee7c 100644
--- a/gcc/function.c
+++ b/gcc/function.c
@@ -4233,6 +4233,10 @@ allocate_struct_function (tree fndecl, bool abstract_p)
       /* Assume all registers in stdarg functions need to be saved.  */
       cfun->va_list_gpr_size = VA_LIST_MAX_GPR_SIZE;
       cfun->va_list_fpr_size = VA_LIST_MAX_FPR_SIZE;
+
+      /* ??? This could be set on a per-function basis by the front-end
+         but is this worth the hassle?  */
+      cfun->can_throw_non_call_exceptions = flag_non_call_exceptions;
     }
 }
 
@@ -4246,7 +4250,7 @@ push_struct_function (tree fndecl)
   allocate_struct_function (fndecl, false);
 }
 
-/* Reset cfun, and other non-struct-function variables to defaults as
+/* Reset crtl and other non-struct-function variables to defaults as
    appropriate for emitting rtl at the start of a function.  */
 
 static void
@@ -4778,7 +4782,7 @@ expand_function_end (void)
       /* We want to ensure that instructions that may trap are not
 	 moved into the epilogue by scheduling, because we don't
 	 always emit unwind information for the epilogue.  */
-      if (flag_non_call_exceptions)
+      if (cfun->can_throw_non_call_exceptions)
 	emit_insn (gen_blockage ());
     }
 
@@ -4924,7 +4928,7 @@ expand_function_end (void)
   /* @@@ This is a kludge.  We want to ensure that instructions that
      may trap are not moved into the epilogue by scheduling, because
      we don't always emit unwind information for the epilogue.  */
-  if (! USING_SJLJ_EXCEPTIONS && flag_non_call_exceptions)
+  if (!USING_SJLJ_EXCEPTIONS && cfun->can_throw_non_call_exceptions)
     emit_insn (gen_blockage ());
 
   /* If stack protection is enabled for this function, check the guard.  */