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rtl.h (recompute_reg_usage): Add second argument. 

* rtl.h (recompute_reg_usage): Add second argument.
	* flow.c (recompute_reg_usage): Likewise.
	* toplev.c (rest_of_compilation): Supply second argument to
	recompute_reg_usage.

From-SVN: r24291
This commit is contained in:
J"orn Rennecke 1998-12-13 00:59:38 +00:00 committed by Jeff Law
parent 867cbbbe72
commit 213c498330
4 changed files with 16 additions and 5 deletions
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5
gcc/ChangeLog
View File

@ -4,6 +4,11 @@
Sun Dec 13 00:24:14 1998 J"orn Rennecke <amylaar@cygnus.co.uk>
* rtl.h (recompute_reg_usage): Add second argument.
* flow.c (recompute_reg_usage): Likewise.
* toplev.c (rest_of_compilation): Supply second argument to
recompute_reg_usage.
* reload1.c (compute_use_by_pseudos): Allow reg_renumber[regno] < 0
after reload.

12
gcc/flow.c
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@ -4267,12 +4267,18 @@ count_reg_references (x)
register allocators to prioritize pseudos for allocation to hard regs.
More accurate reference counts generally lead to better register allocation.
F is the first insn to be scanned.
LOOP_STEP denotes how much loop_depth should be incremented per
loop nesting level in order to increase the ref count more for references
in a loop.
It might be worthwhile to update REG_LIVE_LENGTH, REG_BASIC_BLOCK and
possibly other information which is used by the register allocators. */
void
recompute_reg_usage (f)
recompute_reg_usage (f, loop_step)
rtx f;
int loop_step;
{
rtx insn;
int i, max_reg;
@ -4295,9 +4301,9 @@ recompute_reg_usage (f)
{
/* Look for loop boundaries. */
if (NOTE_LINE_NUMBER (insn) == NOTE_INSN_LOOP_END)
loop_depth--;
loop_depth -= loop_step;
else if (NOTE_LINE_NUMBER (insn) == NOTE_INSN_LOOP_BEG)
loop_depth++;
loop_depth += loop_step;
/* If we have LOOP_DEPTH == 0, there has been a bookkeeping error.
Abort now rather than setting register status incorrectly. */

2
gcc/rtl.h
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@ -1394,7 +1394,7 @@ extern void stupid_life_analysis PROTO ((rtx, int, FILE *));
/* In flow.c */
extern void allocate_for_life_analysis PROTO ((void));
extern void recompute_reg_usage PROTO ((rtx));
extern void recompute_reg_usage PROTO ((rtx, int));
#ifdef BUFSIZ
extern void dump_flow_info PROTO ((FILE *));
#endif

2
gcc/toplev.c
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@ -3929,7 +3929,7 @@ rest_of_compilation (decl)
if (!obey_regdecls)
TIMEVAR (local_alloc_time,
{
recompute_reg_usage (insns);
recompute_reg_usage (insns, ! optimize_size);
regclass (insns, max_reg_num ());
local_alloc ();
});