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Fix lossage caused by applying old version of my previous patch. 

From-SVN: r33254
This commit is contained in:
Jan Hubicka 2000-04-19 12:45:50 +00:00
parent b9297e70ac
commit 82ee5e63a0
2 changed files with 9 additions and 8 deletions
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15
gcc/loop.c
View File

@ -308,8 +308,8 @@ static int replace_loop_reg PARAMS ((rtx *, void *));
static void note_reg_stored PARAMS ((rtx, rtx, void *)); static void note_reg_stored PARAMS ((rtx, rtx, void *));
static void try_copy_prop PARAMS ((const struct loop *, rtx, unsigned int)); static void try_copy_prop PARAMS ((const struct loop *, rtx, unsigned int));
static int replace_label PARAMS ((rtx *, void *)); static int replace_label PARAMS ((rtx *, void *));
static void check_insn_for_givs PARAMS((struct loop *, rtx, int, int)); static rtx check_insn_for_givs PARAMS((struct loop *, rtx, int, int));
static void check_insn_for_bivs PARAMS((struct loop *, rtx, int, int)); static rtx check_insn_for_bivs PARAMS((struct loop *, rtx, int, int));
typedef struct rtx_and_int { typedef struct rtx_and_int {
rtx r; rtx r;
@ -3730,7 +3730,7 @@ for_each_insn_in_loop (loop, fncall)
p != NULL_RTX; p != NULL_RTX;
p = next_insn_in_loop (loop, p)) p = next_insn_in_loop (loop, p))
{ {
fncall (loop, p, maybe_multiple, not_every_iteration); p = fncall (loop, p, not_every_iteration, not_every_iteration);
/* Past CODE_LABEL, we get to insns that may be executed multiple /* Past CODE_LABEL, we get to insns that may be executed multiple
times. The only way we can be sure that they can't is if every times. The only way we can be sure that they can't is if every
@ -5068,7 +5068,7 @@ egress:
} }
/*Record all basic induction variables calculated in the insn. */ /*Record all basic induction variables calculated in the insn. */
static void static rtx
check_insn_for_bivs (loop, p, not_every_iteration, maybe_multiple) check_insn_for_bivs (loop, p, not_every_iteration, maybe_multiple)
struct loop *loop; struct loop *loop;
rtx p; rtx p;
@ -5112,12 +5112,13 @@ check_insn_for_bivs (loop, p, not_every_iteration, maybe_multiple)
REG_IV_TYPE (REGNO (dest_reg)) = NOT_BASIC_INDUCT; REG_IV_TYPE (REGNO (dest_reg)) = NOT_BASIC_INDUCT;
} }
} }
return p;
} }
/* Record all givs calculated in the insn. /* Record all givs calculated in the insn.
A register is a giv if: it is only set once, it is a function of a A register is a giv if: it is only set once, it is a function of a
biv and a constant (or invariant), and it is not a biv. */ biv and a constant (or invariant), and it is not a biv. */
static void static rtx
check_insn_for_givs (loop, p, not_every_iteration, maybe_multiple) check_insn_for_givs (loop, p, not_every_iteration, maybe_multiple)
struct loop *loop; struct loop *loop;
rtx p; rtx p;
@ -5141,7 +5142,7 @@ check_insn_for_givs (loop, p, not_every_iteration, maybe_multiple)
dest_reg = SET_DEST (set); dest_reg = SET_DEST (set);
if (REGNO (dest_reg) < FIRST_PSEUDO_REGISTER) if (REGNO (dest_reg) < FIRST_PSEUDO_REGISTER)
return; return p;
if (/* SET_SRC is a giv. */ if (/* SET_SRC is a giv. */
(general_induction_var (loop, SET_SRC (set), &src_reg, &add_val, (general_induction_var (loop, SET_SRC (set), &src_reg, &add_val,
@ -5196,7 +5197,7 @@ check_insn_for_givs (loop, p, not_every_iteration, maybe_multiple)
if (GET_CODE (p) == INSN || GET_CODE (p) == JUMP_INSN if (GET_CODE (p) == INSN || GET_CODE (p) == JUMP_INSN
|| GET_CODE (p) == CODE_LABEL) || GET_CODE (p) == CODE_LABEL)
update_giv_derive (loop, p); update_giv_derive (loop, p);
return p;
} }
/* Return 1 if X is a valid source for an initial value (or as value being /* Return 1 if X is a valid source for an initial value (or as value being

2
gcc/loop.h
View File

@ -247,6 +247,6 @@ void emit_unrolled_add PARAMS ((rtx, rtx, rtx));
int back_branch_in_range_p PARAMS ((const struct loop *, rtx)); int back_branch_in_range_p PARAMS ((const struct loop *, rtx));
int loop_insn_first_p PARAMS ((rtx, rtx)); int loop_insn_first_p PARAMS ((rtx, rtx));
typedef void (*loop_insn_callback ) PARAMS ((struct loop *, rtx, int, int)); typedef rtx (*loop_insn_callback ) PARAMS ((struct loop *, rtx, int, int));
void for_each_insn_in_loop PARAMS ((struct loop *, loop_insn_callback)); void for_each_insn_in_loop PARAMS ((struct loop *, loop_insn_callback));