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rtl.h (insn_first_p): Don't declare.

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* rtl.h (insn_first_p): Don't declare.
	* rtlanal.c (insn_first_p): Delete.
	* loop.c (loop_insn_first_p): Faster implementation.

From-SVN: r25436
This commit is contained in:
J"orn Rennecke 1999-02-25 11:16:17 +00:00 committed by Joern Rennecke
parent dfa08768aa
commit f38cbf0fd3
4 changed files with 27 additions and 28 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
Thu Feb 25 19:13:42 1999 J"orn Rennecke <amylaar@cygnus.co.uk>
* rtl.h (insn_first_p): Don't declare.
* rtlanal.c (insn_first_p): Delete.
* loop.c (loop_insn_first_p): Faster implementation.
Thu Feb 25 10:44:35 1999 Richard Earnshaw (rearnsha@arm.com)
* arm.h (TARGET_SWITCHES): Delete deprecated switches -m[236].

28
gcc/loop.c
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@ -8106,18 +8106,32 @@ maybe_eliminate_biv (bl, loop_start, end, eliminate_p, threshold, insn_count)
}
/* INSN and REFERENCE are instructions in the same insn chain.
Return non-zero if INSN is first.
This is like insn_first_p, except that we use the luid information if
available. */
Return non-zero if INSN is first. */
int
loop_insn_first_p (insn, reference)
rtx insn, reference;
{
return ((INSN_UID (insn) < max_uid_for_loop
&& INSN_UID (reference) < max_uid_for_loop)
? INSN_LUID (insn) < INSN_LUID (reference)
: insn_first_p (insn, reference));
rtx p, q;
for (p = insn, q = reference; ;)
{
/* Start with test for not first so that INSN == REFERENCE yields not
first. */
if (q == insn || ! p)
return 0;
if (p == reference || ! q)
return 1;
if (INSN_UID (p) < max_uid_for_loop
&& INSN_UID (q) < max_uid_for_loop)
return INSN_LUID (p) < INSN_LUID (q);
if (INSN_UID (p) >= max_uid_for_loop)
p = NEXT_INSN (p);
if (INSN_UID (q) >= max_uid_for_loop)
q = NEXT_INSN (q);
}
}
/* We are trying to eliminate BIV in INSN using GIV. Return non-zero if

1
gcc/rtl.h
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@ -1036,7 +1036,6 @@ extern rtx replace_regs PROTO((rtx, rtx *, int, int));
extern int computed_jump_p PROTO((rtx));
typedef int (*rtx_function) PROTO((rtx *, void *));
extern int for_each_rtx PROTO((rtx *, rtx_function, void *));
extern int insn_first_p PROTO((rtx, rtx));
extern rtx regno_use_in PROTO((int, rtx));
/* flow.c */

20
gcc/rtlanal.c
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@ -2204,26 +2204,6 @@ for_each_rtx (x, f, data)
return 0;
}
/* INSN and REFERENCE are instructions in the same insn chain.
Return non-zero if INSN is first. */
int
insn_first_p (insn, reference)
rtx insn, reference;
{
rtx p, q;
for (p = insn, q = reference; ; p = NEXT_INSN (p), q = NEXT_INSN (q))
{
/* Start with test for not first so that INSN == REFERENCE yields not
first. */
if (q == insn || ! p)
return 0;
if (p == reference || ! q)
return 1;
}
}
/* Searches X for any reference to REGNO, returning the rtx of the
reference found if any. Otherwise, returns NULL_RTX. */