cfgrtl.c (fixup_reorder_chain): Do not emit barriers to BB_FOOTER.

	* cfgrtl.c (fixup_reorder_chain): Do not emit barriers to BB_FOOTER.

	* postreload-gcse.c (bb_has_well_behaved_predecessors): Correct test
	for table jump at the end of a basic block using tablejump_p.
	* targhooks.c (default_invalid_within_doloop): Likewise.
	* config/rs6000/rs6000.c (TARGET_INVALID_WITHIN_DOLOOP): Remove
	target hook implementation that is identical to the default hook.
	(rs6000_invalid_within_doloop): Remove.

	* bb-reorder.c (fix_crossing_unconditional_branches): Remove set but
	unused variable from tablejump_p call.

	* rtl.def (JUMP_TABLE_DATA): New RTX_INSN object.
	* rtl.h (RTX_PREV, RTX_NEXT): Adjust for new JUMP_TABLE_DATA.
	(INSN_DELETED_P): Likewise.
	(emit_jump_table_data): New prototype.
	* gengtype.c (adjust_field_rtx_def): Handle JUMP_TABLE_DATA fields
	after 4th as unused.
	* print-rtl.c (print_rtl): Handle JUMP_TABLE_DATA.
	* sched-vis.c (print_insn): Likewise.
	* emit-rtl.c (active_insn_p): Consider JUMP_TABLE_DATA an active
	insn for compatibility with back ends that use next_active_insn to
	identify jump table data.
	(set_insn_deleted): Remove no longer useful JUMP_TABLE_DATA_P check.
	(remove_insn): Likewise.
	(emit_insn): Do not accept JUMP_TABLE_DATA objects in insn chains
	to be emitted.
	(emit_debug_insn, emit_jump_insn, emit_call_insn, emit_label): Idem.
	(emit_jump_table_data): New function.

	* cfgbuild.c (inside_basic_block_p): A JUMP_INSN is always inside a
	basic block, a JUMP_TABLE_DATA never is.
	(control_flow_insn_p): JUMP_TABLE_DATA is not a control flow insn.
	* cfgrtl.c (duplicate_insn_chain): Split handling of JUMP_TABLE_DATA
	off from code handling real insns.
	* final.c (get_attr_length_1): Simplify for JUMP_INSNs.
	* function.c (instantiate_virtual_regs): Remove JUMP_TABLE_DATA_P
	test, now redundant because JUMP_TABLE_DATA is not an INSN_P insn.
	* gcse.c (insert_insn_end_basic_block): Likewise, JUMP_TABLE_DATA_P
	is not a NONDEBUG_INSN_P.
	* ira-costs.c (scan_one_insn): Likewise.
	* jump.c (mark_all_labels): Likewise.
	(mark_jump_label_1): Likewise.
	* lra-eliminations.c (eliminate_regs_in_insn): Likewise.
	* lra.c (get_insn_freq): Expect all insns reaching here to be in
	a basic block.
	(check_rtl): Remove JUMP_TABLE_DATA_P test, not a NONDEBUG_INSN_P insn.
	* predict.c (expensive_function_p): Use FOR_BB_INSNS.
	* reload1.c (calculate_needs_all_insns): Call set_label_offsets for
	JUMP_TABLE_DATA_P insns.
	(calculate_elim_costs_all_insns): Likewise.
	(set_label_offsets): Recurse on the PATTERN of JUMP_TABLE_DATA insns.
	(elimination_costs_in_insn): Remove redundant JUMP_TABLE_DATA_P test.
	(delete_output_reload): Code style fixups.
	* reorg.c (dbr_schedule): Move JUMP_TABLE_DATA_P up to avoid setting
	insn flags on this non-insn.
	* sched-rgn.c (add_branch_dependences): Treat JUMP_TABLE_DATA insns
	as scheduling barriers, for pre-change compatibility.
	* stmt.c (emit_case_dispatch_table): Emit jump table data not as
	JUMP_INSN objects but instead as JUMP_TABLE_DATA objects.

	* config/alpha/alpha.c (alpha_does_function_need_gp): Remove
	redundant JUMP_TABLE_DATA_P test.
	* config/arm/arm.c (thumb_far_jump_used_p): Likewise.
	* config/frv/frv.c (frv_function_contains_far_jump): Likewise.
	(frv_for_each_packet): Likewise.
	* config/i386/i386.c (min_insn_size): Likewise.
	(ix86_avoid_jump_mispredicts): Likewise.
	* config/m32r/m32r.c (m32r_is_insn): Likewise.
	* config/mep/mep.c (mep_reorg_erepeat): Likewise.
	* config/mips/mips.c (USEFUL_INSN_P): Likewise.
	(mips16_insn_length): Robustify.
	(mips_has_long_branch_p): Remove redundant JUMP_TABLE_DATA_P test.
	(mips16_split_long_branches): Likewise.
	* config/pa/pa.c (pa_combine_instructions): Likewise.
	* config/rs6000/rs6000.c (get_next_active_insn): Treat
	JUMP_TABLE_DATA objects as active insns, like in active_insn_p.
	* config/s390/s390.c (s390_chunkify_start): Treat JUMP_TABLE_DATA
	as contributing to pool range lengths.
	* config/sh/sh.c (find_barrier): Restore check for ADDR_DIFF_VEC.
	Remove redundant JUMP_TABLE_DATA_P test.
	(sh_loop_align): Likewise.
	(split_branches): Likewise.
	(sh_insn_length_adjustment): Likewise.
	* config/spu/spu.c (get_branch_target): Likewise.

From-SVN: r197266

1 files changed, 3 insertions, 4 deletions

diff --git a/gcc/config/mips/mips.c b/gcc/config/mips/mips.c
index 7a67c45..d1ba996 100644
--- a/gcc/config/mips/mips.c
+++ b/gcc/config/mips/mips.c
@@ -99,7 +99,6 @@ along with GCC; see the file COPYING3.  If not see
 	moved to rtl.h.  */
 #define USEFUL_INSN_P(INSN)						\
   (NONDEBUG_INSN_P (INSN)						\
-   && ! JUMP_TABLE_DATA_P (INSN)					\
    && GET_CODE (PATTERN (INSN)) != USE					\
    && GET_CODE (PATTERN (INSN)) != CLOBBER)
 
@@ -14654,8 +14653,10 @@ mips16_insn_length (rtx insn)
       rtx body = PATTERN (insn);
       if (GET_CODE (body) == ADDR_VEC)
 	return GET_MODE_SIZE (GET_MODE (body)) * XVECLEN (body, 0);
-      if (GET_CODE (body) == ADDR_DIFF_VEC)
+      else if (GET_CODE (body) == ADDR_DIFF_VEC)
 	return GET_MODE_SIZE (GET_MODE (body)) * XVECLEN (body, 1);
+      else
+	gcc_unreachable ();
     }
   return get_attr_length (insn);
 }
@@ -16184,7 +16185,6 @@ mips_has_long_branch_p (void)
   for (insn = get_insns (); insn; insn = NEXT_INSN (insn))
     FOR_EACH_SUBINSN (subinsn, insn)
       if (JUMP_P (subinsn)
-	  && USEFUL_INSN_P (subinsn)
 	  && get_attr_length (subinsn) > normal_length
 	  && (any_condjump_p (subinsn) || any_uncondjump_p (subinsn)))
 	return true;
@@ -16286,7 +16286,6 @@ mips16_split_long_branches (void)
       something_changed = false;
       for (insn = get_insns (); insn; insn = NEXT_INSN (insn))
 	if (JUMP_P (insn)
-	    && USEFUL_INSN_P (insn)
 	    && get_attr_length (insn) > 8
 	    && (any_condjump_p (insn) || any_uncondjump_p (insn)))
 	  {