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loop.c (libcall_other_regs): Make extern.

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* loop.c (libcall_other_regs): Make extern.
	* rtl.h (find_last_value): Add parameter to prototype.
	(libcall_other_reg): Add extern declaration.
	* rtlanal.c (find_last_value): Add another parameter to allow
	a definition using a hardware register to be found as well.

From-SVN: r25378
This commit is contained in:
Andrew MacLeod 1999-02-22 14:11:58 +00:00 committed by Andrew Macleod
parent a4c6502a66
commit 89d3d44249
4 changed files with 17 additions and 7 deletions
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8
gcc/ChangeLog
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@ -1,3 +1,11 @@
Mon Feb 22 16:54:18 EST 1999 Andrew MacLeod <amacleod@cygnus.com>
* loop.c (libcall_other_regs): Make extern.
* rtl.h (find_last_value): Add parameter to prototype.
(libcall_other_reg): Add extern declaration.
* rtlanal.c (find_last_value): Add another parameter to allow
a definition using a hardware register to be found as well.
Mon Feb 22 13:33:47 1999 Mark Mitchell <mark@markmitchell.com>
* cse.c (dump_class): New function.

3
gcc/loop.c
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@ -291,7 +291,6 @@ static void mark_loop_jump PROTO((rtx, int));
static void prescan_loop PROTO((rtx, rtx));
static int reg_in_basic_block_p PROTO((rtx, rtx));
static int consec_sets_invariant_p PROTO((rtx, int, rtx));
static rtx libcall_other_reg PROTO((rtx, rtx));
static int labels_in_range_p PROTO((rtx, int));
static void count_one_set PROTO((rtx, rtx, varray_type, rtx *));
@ -1241,7 +1240,7 @@ record_excess_regs (in_this, not_in_this, output)
If there are none, return 0.
If there are one or more, return an EXPR_LIST containing all of them. */
static rtx
rtx
libcall_other_reg (insn, equiv)
rtx insn, equiv;
{

3
gcc/rtl.h
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@ -1013,7 +1013,7 @@ extern int modified_in_p PROTO((rtx, rtx));
extern int reg_set_p PROTO((rtx, rtx));
extern rtx single_set PROTO((rtx));
extern int multiple_sets PROTO((rtx));
extern rtx find_last_value PROTO((rtx, rtx *, rtx));
extern rtx find_last_value PROTO((rtx, rtx *, rtx, int));
extern int refers_to_regno_p PROTO((int, int, rtx, rtx *));
extern int reg_overlap_mentioned_p PROTO((rtx, rtx));
extern void note_stores PROTO((rtx, void (*)()));
@ -1390,6 +1390,7 @@ extern void print_inline_rtx PROTO ((FILE *, rtx, int));
/* In loop.c */
extern void init_loop PROTO ((void));
extern rtx libcall_other_reg PROTO ((rtx, rtx));
#ifdef BUFSIZ
extern void loop_optimize PROTO ((rtx, FILE *, int, int));
#endif

10
gcc/rtlanal.c
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@ -740,13 +740,15 @@ multiple_sets (insn)
/* Return the last thing that X was assigned from before *PINSN. Verify that
the object is not modified up to VALID_TO. If it was, if we hit
a partial assignment to X, or hit a CODE_LABEL first, return X. If we
found an assignment, update *PINSN to point to it. */
found an assignment, update *PINSN to point to it.
ALLOW_HWREG is set to 1 if hardware registers are allowed to be the src. */
rtx
find_last_value (x, pinsn, valid_to)
find_last_value (x, pinsn, valid_to, allow_hwreg)
rtx x;
rtx *pinsn;
rtx valid_to;
int allow_hwreg;
{
rtx p;
@ -767,8 +769,8 @@ find_last_value (x, pinsn, valid_to)
if (! modified_between_p (src, PREV_INSN (p), valid_to)
/* Reject hard registers because we don't usually want
to use them; we'd rather use a pseudo. */
&& ! (GET_CODE (src) == REG
&& REGNO (src) < FIRST_PSEUDO_REGISTER))
&& (! (GET_CODE (src) == REG
&& REGNO (src) < FIRST_PSEUDO_REGISTER) || allow_hwreg))
{
*pinsn = p;
return src;