diff options
Diffstat (limited to 'gcc/regstat.c')
| -rw-r--r-- | gcc/regstat.c | 60 |
1 files changed, 30 insertions, 30 deletions
diff --git a/gcc/regstat.c b/gcc/regstat.c index 70ddfa4d84f..cb4471b235b 100644 --- a/gcc/regstat.c +++ b/gcc/regstat.c @@ -39,7 +39,7 @@ along with GCC; see the file COPYING3. If not see struct regstat_n_sets_and_refs_t *regstat_n_sets_and_refs; /*---------------------------------------------------------------------------- - REG_N_SETS and REG_N_REFS. + REG_N_SETS and REG_N_REFS. ----------------------------------------------------------------------------*/ /* If a pass need to change these values in some magical way or or the @@ -117,7 +117,7 @@ size_t reg_info_p_size; here. */ static void -regstat_bb_compute_ri (unsigned int bb_index, +regstat_bb_compute_ri (unsigned int bb_index, bitmap live, bitmap do_not_gen, bitmap artificial_uses, bitmap local_live, bitmap local_processed) { @@ -156,7 +156,7 @@ regstat_bb_compute_ri (unsigned int bb_index, bitmap_set_bit (artificial_uses, regno); } } - + FOR_BB_INSNS_REVERSE (bb, insn) { unsigned int uid = INSN_UID (insn); @@ -164,7 +164,7 @@ regstat_bb_compute_ri (unsigned int bb_index, bitmap_iterator bi; struct df_mw_hardreg **mws_rec; rtx link; - + if (!NONDEBUG_INSN_P (insn)) continue; @@ -176,7 +176,7 @@ regstat_bb_compute_ri (unsigned int bb_index, REG_LIVE_LENGTH (regno)++; } luid++; - + bitmap_clear (do_not_gen); link = REG_NOTES (insn); @@ -190,7 +190,7 @@ regstat_bb_compute_ri (unsigned int bb_index, /* Process the defs. */ if (CALL_P (insn)) { - bool can_throw = can_throw_internal (insn); + bool can_throw = can_throw_internal (insn); bool set_jump = (find_reg_note (insn, REG_SETJMP, NULL) != NULL); EXECUTE_IF_SET_IN_BITMAP (live, 0, regno, bi) { @@ -198,7 +198,7 @@ regstat_bb_compute_ri (unsigned int bb_index, REG_FREQ_CALLS_CROSSED (regno) += REG_FREQ_FROM_BB (bb); if (can_throw) REG_N_THROWING_CALLS_CROSSED (regno)++; - + /* We have a problem with any pseudoreg that lives across the setjmp. ANSI says that if a user variable does not change in value between the setjmp and the @@ -214,17 +214,17 @@ regstat_bb_compute_ri (unsigned int bb_index, bitmap_set_bit (setjmp_crosses, regno); } } - + /* We only care about real sets for calls. Clobbers only may clobbers cannot be depended on. */ for (mws_rec = DF_INSN_UID_MWS (uid); *mws_rec; mws_rec++) { - struct df_mw_hardreg *mws = *mws_rec; - if (DF_MWS_REG_DEF_P (mws)) + struct df_mw_hardreg *mws = *mws_rec; + if (DF_MWS_REG_DEF_P (mws)) { bool all_dead = true; unsigned int r; - + for (r=mws->start_regno; r <= mws->end_regno; r++) if ((bitmap_bit_p (live, r)) || bitmap_bit_p (artificial_uses, r)) @@ -232,7 +232,7 @@ regstat_bb_compute_ri (unsigned int bb_index, all_dead = false; break; } - + if (all_dead) { unsigned int regno = mws->start_regno; @@ -242,7 +242,7 @@ regstat_bb_compute_ri (unsigned int bb_index, } } } - + /* All of the defs except the return value are some sort of clobber. This code is for the return. */ for (def_rec = DF_INSN_UID_DEFS (uid); *def_rec; def_rec++) @@ -252,7 +252,7 @@ regstat_bb_compute_ri (unsigned int bb_index, || (!(DF_REF_FLAGS (def) & (DF_REF_MUST_CLOBBER | DF_REF_MAY_CLOBBER)))) { unsigned int dregno = DF_REF_REGNO (def); - + if (bitmap_bit_p (live, dregno)) { /* If we have seen this regno, then it has already been @@ -275,7 +275,7 @@ regstat_bb_compute_ri (unsigned int bb_index, { REG_LIVE_LENGTH (dregno)++; } - + if (dregno >= FIRST_PSEUDO_REGISTER) { REG_FREQ (dregno) += REG_FREQ_FROM_BB (bb); @@ -284,16 +284,16 @@ regstat_bb_compute_ri (unsigned int bb_index, else if (REG_BASIC_BLOCK (dregno) != bb->index) REG_BASIC_BLOCK (dregno) = REG_BLOCK_GLOBAL; } - + if (!(DF_REF_FLAGS (def) & (DF_REF_MUST_CLOBBER + DF_REF_MAY_CLOBBER))) bitmap_set_bit (do_not_gen, dregno); - + /* Kill this register if it is not a subreg store or conditional store. */ if (!(DF_REF_FLAGS (def) & (DF_REF_PARTIAL | DF_REF_CONDITIONAL))) bitmap_clear_bit (live, dregno); } } - + for (use_rec = DF_INSN_UID_USES (uid); *use_rec; use_rec++) { df_ref use = *use_rec; @@ -307,7 +307,7 @@ regstat_bb_compute_ri (unsigned int bb_index, else if (REG_BASIC_BLOCK (uregno) != bb->index) REG_BASIC_BLOCK (uregno) = REG_BLOCK_GLOBAL; } - + if (!bitmap_bit_p (live, uregno)) { /* This register is now live. */ @@ -326,7 +326,7 @@ regstat_bb_compute_ri (unsigned int bb_index, } } } - + /* Add the length of the block to all of the registers that were not referenced, but still live in this block. */ bitmap_and_compl_into (live, local_processed); @@ -376,8 +376,8 @@ regstat_compute_ri (void) { REG_BASIC_BLOCK (regno) = REG_BLOCK_UNKNOWN; REG_LIVE_LENGTH (regno) = -1; - } - + } + BITMAP_FREE (local_live); BITMAP_FREE (local_processed); timevar_pop (TV_REG_STATS); @@ -391,14 +391,14 @@ regstat_free_ri (void) { gcc_assert (reg_info_p); reg_info_p_size = 0; - free (reg_info_p); + free (reg_info_p); reg_info_p = NULL; BITMAP_FREE (setjmp_crosses); } -/* Return a bitmap containing the set of registers that cross a setjmp. +/* Return a bitmap containing the set of registers that cross a setjmp. The client should not change or delete this bitmap. */ bitmap @@ -408,7 +408,7 @@ regstat_get_setjmp_crosses (void) } /*---------------------------------------------------------------------------- - Process REG_N_CALLS_CROSSED. + Process REG_N_CALLS_CROSSED. This is used by sched_deps. A good implementation of sched-deps would really process the blocks directly rather than going through @@ -447,12 +447,12 @@ regstat_bb_compute_calls_crossed (unsigned int bb_index, bitmap live) if ((DF_REF_FLAGS (use) & DF_REF_AT_TOP) == 0) bitmap_set_bit (live, DF_REF_REGNO (use)); } - + FOR_BB_INSNS_REVERSE (bb, insn) { unsigned int uid = INSN_UID (insn); unsigned int regno; - + if (!INSN_P (insn)) continue; @@ -466,7 +466,7 @@ regstat_bb_compute_calls_crossed (unsigned int bb_index, bitmap live) REG_FREQ_CALLS_CROSSED (regno) += REG_FREQ_FROM_BB (bb); } } - + /* All of the defs except the return value are some sort of clobber. This code is for the return. */ for (def_rec = DF_INSN_UID_DEFS (uid); *def_rec; def_rec++) @@ -480,7 +480,7 @@ regstat_bb_compute_calls_crossed (unsigned int bb_index, bitmap live) bitmap_clear_bit (live, DF_REF_REGNO (def)); } } - + for (use_rec = DF_INSN_UID_USES (uid); *use_rec; use_rec++) { df_ref use = *use_rec; @@ -522,7 +522,7 @@ regstat_free_calls_crossed (void) { gcc_assert (reg_info_p); reg_info_p_size = 0; - free (reg_info_p); + free (reg_info_p); reg_info_p = NULL; } |