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reload1.c (reload): Do not set reload_completed or split insns here.

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* reload1.c (reload): Do not set reload_completed or split insns
        here.  Instead...
        * toplev.c (rest_of_compilation): Set reload_completed after
        reload returns.  Split insns after reload_cse has run.

From-SVN: r24037
This commit is contained in:
Jeffrey A Law 1998-12-01 14:36:51 +00:00 committed by Jeff Law
parent 82371d41c2
commit 45c85c4e71
3 changed files with 37 additions and 22 deletions
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7
gcc/ChangeLog
View File

@ -1,3 +1,10 @@
Tue Dec 1 15:20:44 1998 Jeffrey A Law (law@cygnus.com)
* reload1.c (reload): Do not set reload_completed or split insns
here. Instead...
* toplev.c (rest_of_compilation): Set reload_completed after
reload returns. Split insns after reload_cse has run.
Tue Dec 1 11:55:04 1998 Richard Henderson <rth@cygnus.com>
* final.c (final_scan_insn): Abort if block_depth falls below 0.

22
gcc/reload1.c
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@ -1100,10 +1100,6 @@ reload (first, global, dumpfile)
}
}
/* We've finished reloading. This reload_completed must be set before we
perform instruction splitting below. */
reload_completed = 1;
/* Make a pass over all the insns and delete all USEs which we inserted
only to tag a REG_EQUAL note on them. Remove all REG_DEAD and REG_UNUSED
notes. Delete all CLOBBER insns and simplify (subreg (reg)) operands. */
@ -1135,24 +1131,6 @@ reload (first, global, dumpfile)
/* And simplify (subreg (reg)) if it appears as an operand. */
cleanup_subreg_operands (insn);
/* If optimizing and we are performing instruction scheduling after
reload, then go ahead and split insns now since we are about to
recompute flow information anyway. */
if (optimize && flag_schedule_insns_after_reload)
{
rtx last;
last = try_split (PATTERN (insn), insn, 1);
if (last != insn)
{
PUT_CODE (insn, NOTE);
NOTE_SOURCE_FILE (insn) = 0;
NOTE_LINE_NUMBER (insn) = NOTE_INSN_DELETED;
}
}
}
/* If we are doing stack checking, give a warning if this function's

30
gcc/toplev.c
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@ -3968,10 +3968,40 @@ rest_of_compilation (decl)
if (failure)
goto exit_rest_of_compilation;
reload_completed = 1;
/* Do a very simple CSE pass over just the hard registers. */
if (optimize > 0)
reload_cse_regs (insns);
/* If optimizing and we are performing instruction scheduling after
reload, then go ahead and split insns now since we are about to
recompute flow information anyway.
reload_cse_regs may expose more splitting opportunities, expecially
for double-word operations. */
if (optimize > 0 && flag_schedule_insns_after_reload)
{
rtx insn;
for (insn = insns; insn; insn = NEXT_INSN (insn))
{
rtx last;
if (GET_RTX_CLASS (GET_CODE (insn)) != 'i')
continue;
last = try_split (PATTERN (insn), insn, 1);
if (last != insn)
{
PUT_CODE (insn, NOTE);
NOTE_SOURCE_FILE (insn) = 0;
NOTE_LINE_NUMBER (insn) = NOTE_INSN_DELETED;
}
}
}
/* Re-create the death notes which were deleted during reload. */
if (optimize)
TIMEVAR