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| author | Michael Hayes <mhayes@redhat.com> | 2001-01-26 22:06:45 +0000 |
|---|---|---|
| committer | Michael Hayes <m.hayes@gcc.gnu.org> | 2001-01-26 22:06:45 +0000 |
| commit | 616fde536ecb92831bff313532f99121c9695c5a (patch) | |
| tree | e95fe54314bf85527f266d1988a7b4ae636e31df | |
| parent | 5bb1db008c77467f06f954152e24c9c071395aad (diff) | |
| download | gcc-616fde536ecb92831bff313532f99121c9695c5a.zip gcc-616fde536ecb92831bff313532f99121c9695c5a.tar.gz gcc-616fde536ecb92831bff313532f99121c9695c5a.tar.bz2 | |
loop.c (loop_giv_reduce_benefit): Copy mode size into int variable.
* loop.c (loop_giv_reduce_benefit): Copy mode size into
int variable.
(check_ext_dependant_givs): Initialise u_start_val and
u_end_val.
(load_mems): Make last_max_reg unsigned.
(try_swap_copy_prop): Use INSN_P and initialise set.
From-SVN: r39284
| -rw-r--r-- | gcc/ChangeLog | 9 | ||||
| -rw-r--r-- | gcc/loop.c | 23 |
2 files changed, 22 insertions, 10 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 2d246dd..c2dcc4e 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,12 @@ +2001-01-27 Michael Hayes <mhayes@redhat.com> + + * loop.c (loop_giv_reduce_benefit): Copy mode size into + int variable. + (check_ext_dependant_givs): Initialise u_start_val and + u_end_val. + (load_mems): Make last_max_reg unsigned. + (try_swap_copy_prop): Use INSN_P and initialise set. + Fri Jan 26 23:22:58 2001 Denis Chertykov <denisc@overta.ru> * README.AVR : Removed. @@ -4135,17 +4135,19 @@ loop_giv_reduce_benefit (loop, bl, v, test_reg) && benefit > 0 && GET_CODE (v->mult_val) == CONST_INT) { + int size = GET_MODE_SIZE (GET_MODE (v->mem)); + if (HAVE_POST_INCREMENT - && INTVAL (v->mult_val) == GET_MODE_SIZE (GET_MODE (v->mem))) + && INTVAL (v->mult_val) == size) benefit += add_cost * bl->biv_count; else if (HAVE_PRE_INCREMENT - && INTVAL (v->mult_val) == GET_MODE_SIZE (GET_MODE (v->mem))) + && INTVAL (v->mult_val) == size) benefit += add_cost * bl->biv_count; else if (HAVE_POST_DECREMENT - && -INTVAL (v->mult_val) == GET_MODE_SIZE (GET_MODE (v->mem))) + && -INTVAL (v->mult_val) == size) benefit += add_cost * bl->biv_count; else if (HAVE_PRE_DECREMENT - && -INTVAL (v->mult_val) == GET_MODE_SIZE (GET_MODE (v->mem))) + && -INTVAL (v->mult_val) == size) benefit += add_cost * bl->biv_count; } #endif @@ -6482,7 +6484,8 @@ check_ext_dependant_givs (bl, loop_info) int ze_ok = 0, se_ok = 0, info_ok = 0; enum machine_mode biv_mode = GET_MODE (bl->biv->src_reg); HOST_WIDE_INT start_val; - unsigned HOST_WIDE_INT u_end_val, u_start_val; + unsigned HOST_WIDE_INT u_end_val = 0; + unsigned HOST_WIDE_INT u_start_val = 0; rtx incr = pc_rtx; struct induction *v; @@ -8815,7 +8818,7 @@ load_mems (loop) rtx end_label; /* Nonzero if the next instruction may never be executed. */ int next_maybe_never = 0; - int last_max_reg = max_reg_num (); + unsigned int last_max_reg = max_reg_num (); if (loop_info->mems_idx == 0) return; @@ -9247,7 +9250,7 @@ try_swap_copy_prop (loop, replacement, regno) unsigned int regno; { rtx insn; - rtx set; + rtx set = NULL_RTX; unsigned int new_regno; new_regno = REGNO (replacement); @@ -9257,7 +9260,7 @@ try_swap_copy_prop (loop, replacement, regno) insn = next_insn_in_loop (loop, insn)) { /* Search for the insn that copies REGNO to NEW_REGNO? */ - if (GET_RTX_CLASS (GET_CODE (insn)) == 'i' + if (INSN_P (insn) && (set = single_set (insn)) && GET_CODE (SET_DEST (set)) == REG && REGNO (SET_DEST (set)) == new_regno @@ -9266,7 +9269,7 @@ try_swap_copy_prop (loop, replacement, regno) break; } - if (insn != NULL_RTX) + if (set) { rtx prev_insn; rtx prev_set; @@ -9277,7 +9280,7 @@ try_swap_copy_prop (loop, replacement, regno) prev_insn = PREV_INSN (insn); - if (GET_RTX_CLASS (GET_CODE (insn)) == 'i' + if (INSN_P (insn) && (prev_set = single_set (prev_insn)) && GET_CODE (SET_DEST (prev_set)) == REG && REGNO (SET_DEST (prev_set)) == regno) |