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flags.h (flag_renumber_insns): Declare.

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* flags.h (flag_renumber_insns): Declare.
	* emit-rtl.c (renumber_insns): Check flag_renumber_insns.  Print
	renumbering table.
	* rtl.h (renumber_insns): Change prototype.
	* toplev.c (flag_renumber_insns): Define.
	(rest_of_compilation): Pass rtl_dump_file to flag_renumber_insns.

From-SVN: r30388
This commit is contained in:
Mark Mitchell 1999-11-04 07:23:58 +00:00 committed by Mark Mitchell
parent d211953910
commit 673b5311a9
5 changed files with 50 additions and 22 deletions
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9
gcc/ChangeLog
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@ -1,3 +1,12 @@
Wed Nov 3 23:05:14 1999 Mark Mitchell <mark@codesourcery.com>
* flags.h (flag_renumber_insns): Declare.
* emit-rtl.c (renumber_insns): Check flag_renumber_insns. Print
renumbering table.
* rtl.h (renumber_insns): Change prototype.
* toplev.c (flag_renumber_insns): Define.
(rest_of_compilation): Pass rtl_dump_file to flag_renumber_insns.
Wed Nov 3 15:11:27 1999 David S. Miller <davem@redhat.com>
* config/sparc/sparc.md: Remove insn type fpsqrt, add fpsqrts

19
gcc/emit-rtl.c
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@ -1898,21 +1898,33 @@ get_max_uid ()
return cur_insn_uid;
}
/* Renumber instructions so that no instruction UIDs are wasted. */
void
renumber_insns ()
renumber_insns (stream)
FILE *stream;
{
rtx insn;
int old_max_uid = cur_insn_uid;
/* If we're not supposed to renumber instructions, don't. */
if (!flag_renumber_insns)
return;
/* If there aren't that many instructions, then it's not really
worth renumbering them. */
if (get_max_uid () < 25000)
if (flag_renumber_insns == 1 && get_max_uid () < 25000)
return;
cur_insn_uid = 1;
for (insn = get_insns (); insn; insn = NEXT_INSN (insn))
INSN_UID (insn) = cur_insn_uid++;
{
if (stream)
fprintf (stream, "Renumbering insn %d to %d\n",
INSN_UID (insn), cur_insn_uid);
INSN_UID (insn) = cur_insn_uid++;
}
}
/* Return the next insn. If it is a SEQUENCE, return the first insn
@ -2593,7 +2605,6 @@ remove_unncessary_notes ()
{
rtx insn;
rtx next;
varray_type block_stack;
/* Remove NOTE_INSN_DELETED notes. We must not remove the first
instruction in the function because the compiler depends on the

5
gcc/flags.h
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@ -495,6 +495,11 @@ extern int flag_bounded_pointers;
For Fortran: defaults to off.
For CHILL: defaults to off. */
extern int flag_bounds_check;
/* If one, renumber instruction UIDs to reduce the number of
unused UIDs if there are a lot of instructions. If greater than
one, unconditionally renumber instruction UIDs. */
extern int flag_renumber_insns;
/* Other basic status info about current function. */

2
gcc/rtl.h
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@ -1460,7 +1460,7 @@ extern rtx emit PROTO ((rtx));
warnings about unreachable code. */
int force_line_numbers PROTO((void));
void restore_line_number_status PROTO((int old_value));
extern void renumber_insns PROTO ((void));
extern void renumber_insns PROTO ((FILE *));
extern void remove_unncessary_notes PROTO ((void));
/* In insn-emit.c */

37
gcc/toplev.c
View File

@ -771,6 +771,11 @@ int flag_bounded_pointers = 0;
For CHILL: defaults to off. */
int flag_bounds_check = 0;
/* If one, renumber instruction UIDs to reduce the number of
unused UIDs if there are a lot of instructions. If greater than
one, unconditionally renumber instruction UIDs. */
int flag_renumber_insns = 1;
/* Values of the -falign-* flags: how much to align labels in code.
0 means `use default', 1 means `don't align'.
For each variable, there is an _log variant which is the power
@ -3776,6 +3781,17 @@ rest_of_compilation (decl)
TIMEVAR (jump_time, jump_optimize (insns, !JUMP_CROSS_JUMP, !JUMP_NOOP_MOVES,
JUMP_AFTER_REGSCAN));
/* Jump optimization, and the removal of NULL pointer checks, may
have reduced the number of instructions substantially. CSE, and
future passes, allocate arrays whose dimensions involve the maximum
instruction UID, so if we can reduce the maximum UID we'll save big on
memory. */
renumber_insns (rtl_dump_file);
/* Dump rtl code after jump, if we are doing that. */
if (jump_opt_dump)
close_dump_file (print_rtl, insns);
/* Now is when we stop if -fsyntax-only and -Wreturn-type. */
if (rtl_dump_and_exit || flag_syntax_only || DECL_DEFER_OUTPUT (decl))
goto exit_rest_of_compilation;
@ -3784,20 +3800,9 @@ rest_of_compilation (decl)
if (flag_delete_null_pointer_checks)
TIMEVAR (jump_time, delete_null_pointer_checks (get_insns ()));
/* Dump rtl code after jump, if we are doing that. */
if (jump_opt_dump)
close_dump_file (print_rtl, insns);
if (ggc_p)
ggc_collect ();
/* Jump optimization, and the removal of NULL pointer checks, may
have reduced the number of instructions substantially. CSE, and
future passes, allocate arrays whose dimensions involve the maximum
instruction UID, so if we can reduce the maximum UID we'll save big on
memory. */
renumber_insns ();
/* Perform common subexpression elimination.
Nonzero value from `cse_main' means that jumps were simplified
and some code may now be unreachable, so do
@ -3832,18 +3837,17 @@ rest_of_compilation (decl)
if (flag_delete_null_pointer_checks)
TIMEVAR (jump_time, delete_null_pointer_checks (get_insns ()));
/* Dump rtl code after cse, if we are doing that. */
/* The second pass of jump optimization is likely to have
removed a bunch more instructions. */
renumber_insns (rtl_dump_file);
/* Dump rtl code after cse, if we are doing that. */
if (cse_dump)
{
close_dump_file (print_rtl, insns);
if (graph_dump_format != no_graph)
print_rtl_graph_with_bb (dump_base_name, ".02.cse", insns);
}
/* The second pass of jump optimization is likely to have
removed a bunch more instructions. */
renumber_insns ();
}
purge_addressof (insns);
@ -3970,7 +3974,6 @@ rest_of_compilation (decl)
}
/* Dump rtl code after cse, if we are doing that. */
if (cse2_dump)
{
close_dump_file (print_rtl, insns);