From: Jeff Law Date: Sun, 21 Mar 1993 03:45:52 +0000 (-0700) Subject: reorg.c (mark_referenced_resources): Parameter include_called_routine changed to... X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=674345b107b820d63bdc47879820d134fe5d5efe;p=gcc.git reorg.c (mark_referenced_resources): Parameter include_called_routine changed to include_delayed_effects. * reorg.c (mark_referenced_resources): Parameter include_called_routine changed to include_delayed_effects. All references changed. (mark_set_resources): Likewise. (insn_references_resource_p): Likewise. (insn_sets_resource_p): Likewise. (mark_referenced_resources, case INSN): Do not mark any resources as referenced if we are not including delayed effects, and the given insn has delayed effects. (mark_set_resources): Likewise for resources which are set/clobbered. (fill_simple_delay_slots): Include delayed effects for the delay insn if we are searching after the delay insn for candiates. (dbr_schedule): When initializing `end_of_function_needs' include delayed effects. From-SVN: r3810 --- diff --git a/gcc/reorg.c b/gcc/reorg.c index a2d5db859ed..4ad7a0c8757 100644 --- a/gcc/reorg.c +++ b/gcc/reorg.c @@ -256,10 +256,10 @@ static void make_return_insns PROTO((rtx)); CALL_INSNs. */ static void -mark_referenced_resources (x, res, include_called_routine) +mark_referenced_resources (x, res, include_delayed_effects) register rtx x; register struct resources *res; - register int include_called_routine; + register int include_delayed_effects; { register enum rtx_code code = GET_CODE (x); register int i, j; @@ -354,7 +354,7 @@ mark_referenced_resources (x, res, include_called_routine) return; case CALL_INSN: - if (include_called_routine) + if (include_delayed_effects) { /* A CALL references memory, the frame pointer if it exists, the stack pointer, any global registers and any registers given in @@ -411,8 +411,15 @@ mark_referenced_resources (x, res, include_called_routine) case INSN: case JUMP_INSN: + +#ifdef INSN_REFERENCES_ARE_DELAYED + if (! include_delayed_effects + && INSN_REFERENCES_ARE_DELAYED (x)) + return; +#endif + /* No special processing, just speed up. */ - mark_referenced_resources (PATTERN (x), res, include_called_routine); + mark_referenced_resources (PATTERN (x), res, include_delayed_effects); return; } @@ -422,13 +429,13 @@ mark_referenced_resources (x, res, include_called_routine) switch (*format_ptr++) { case 'e': - mark_referenced_resources (XEXP (x, i), res, include_called_routine); + mark_referenced_resources (XEXP (x, i), res, include_delayed_effects); break; case 'E': for (j = 0; j < XVECLEN (x, i); j++) mark_referenced_resources (XVECEXP (x, i, j), res, - include_called_routine); + include_delayed_effects); break; } } @@ -447,11 +454,11 @@ mark_referenced_resources (x, res, include_called_routine) our computation and thus may be placed in a delay slot. */ static void -mark_set_resources (x, res, in_dest, include_called_routine) +mark_set_resources (x, res, in_dest, include_delayed_effects) register rtx x; register struct resources *res; int in_dest; - int include_called_routine; + int include_delayed_effects; { register enum rtx_code code; register int i, j; @@ -486,7 +493,7 @@ mark_set_resources (x, res, in_dest, include_called_routine) that aren't saved across calls, global registers and anything explicitly CLOBBERed immediately after the CALL_INSN. */ - if (include_called_routine) + if (include_delayed_effects) { rtx next = NEXT_INSN (x); @@ -513,6 +520,12 @@ mark_set_resources (x, res, in_dest, include_called_routine) /* An insn consisting of just a CLOBBER (or USE) is just for flow and doesn't actually do anything, so we ignore it. */ +#ifdef INSN_SETS_ARE_DELAYED + if (! include_delayed_effects + && INSN_SETS_ARE_DELAYED (x)) + return; +#endif + x = PATTERN (x); if (GET_CODE (x) != USE && GET_CODE (x) != CLOBBER) goto restart; @@ -524,7 +537,7 @@ mark_set_resources (x, res, in_dest, include_called_routine) effects of the calling routine. */ mark_set_resources (SET_DEST (x), res, - (include_called_routine + (include_delayed_effects || GET_CODE (SET_SRC (x)) != CALL), 0); @@ -540,7 +553,7 @@ mark_set_resources (x, res, in_dest, include_called_routine) if (! (INSN_ANNULLED_BRANCH_P (XVECEXP (x, 0, 0)) && INSN_FROM_TARGET_P (XVECEXP (x, 0, i)))) mark_set_resources (XVECEXP (x, 0, i), res, 0, - include_called_routine); + include_delayed_effects); return; case POST_INC: @@ -579,13 +592,13 @@ mark_set_resources (x, res, in_dest, include_called_routine) switch (*format_ptr++) { case 'e': - mark_set_resources (XEXP (x, i), res, in_dest, include_called_routine); + mark_set_resources (XEXP (x, i), res, in_dest, include_delayed_effects); break; case 'E': for (j = 0; j < XVECLEN (x, i); j++) mark_set_resources (XVECEXP (x, i, j), res, in_dest, - include_called_routine); + include_delayed_effects); break; } } @@ -662,15 +675,15 @@ resource_conflicts_p (res1, res2) a large block of complex code. */ static int -insn_references_resource_p (insn, res, include_called_routine) +insn_references_resource_p (insn, res, include_delayed_effects) register rtx insn; register struct resources *res; - int include_called_routine; + int include_delayed_effects; { struct resources insn_res; CLEAR_RESOURCE (&insn_res); - mark_referenced_resources (insn, &insn_res, include_called_routine); + mark_referenced_resources (insn, &insn_res, include_delayed_effects); return resource_conflicts_p (&insn_res, res); } @@ -680,15 +693,15 @@ insn_references_resource_p (insn, res, include_called_routine) in front of mark_set_resources for details. */ static int -insn_sets_resource_p (insn, res, include_called_routine) +insn_sets_resource_p (insn, res, include_delayed_effects) register rtx insn; register struct resources *res; - int include_called_routine; + int include_delayed_effects; { struct resources insn_sets; CLEAR_RESOURCE (&insn_sets); - mark_set_resources (insn, &insn_sets, 0, include_called_routine); + mark_set_resources (insn, &insn_sets, 0, include_delayed_effects); return resource_conflicts_p (&insn_sets, res); } @@ -2558,8 +2571,8 @@ fill_simple_delay_slots (first, non_jumps_p) } else { - mark_set_resources (insn, &set, 0, 0); - mark_referenced_resources (insn, &needed, 0); + mark_set_resources (insn, &set, 0, 1); + mark_referenced_resources (insn, &needed, 1); if (GET_CODE (insn) == JUMP_INSN) { /* Get our target and show how many more uses we want to @@ -3751,7 +3764,7 @@ dbr_schedule (first, file) if (current_function_return_rtx != 0 && GET_CODE (current_function_return_rtx) == REG) mark_referenced_resources (current_function_return_rtx, - &end_of_function_needs, 0); + &end_of_function_needs, 1); for (i = 0; i < FIRST_PSEUDO_REGISTER; i++) if (global_regs[i]) @@ -3777,7 +3790,7 @@ dbr_schedule (first, file) start_of_epilogue_needs = end_of_function_needs; while (epilogue_insn = next_nonnote_insn (epilogue_insn)) - mark_set_resources (epilogue_insn, &end_of_function_needs, 0, 0); + mark_set_resources (epilogue_insn, &end_of_function_needs, 0, 1); /* Show we haven't computed an end-of-function label yet. */ end_of_function_label = 0;