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loop.c (scan_loop): Count down from max_reg_num - 1 to FIRST_PSEUDO_REGISTER to avoid calilng...

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* loop.c (scan_loop): Count down from max_reg_num - 1 to
        FIRST_PSEUDO_REGISTER to avoid calilng max_reg_num each iteration
        of the loop.

From-SVN: r22043
This commit is contained in:
Jeffrey A Law 1998-08-27 23:11:32 +00:00 • committed by Jeff Law
parent 3d55c13000
commit 3568fdd276
2 changed files with 5 additions and 1 deletions
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4
gcc/ChangeLog
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@ -1,5 +1,9 @@
Thu Aug 27 20:10:46 1998 Jeffrey A Law (law@cygnus.com)
* loop.c (scan_loop): Count down from max_reg_num - 1 to
FIRST_PSEUDO_REGISTER to avoid calilng max_reg_num each iteration
of the loop.
* i386.c (print_operand): Remove obsolete 'c' docs.
Wed Aug 26 17:13:37 1998 Tom Tromey <tromey@cygnus.com>

2
gcc/loop.c
View file

@ -788,7 +788,7 @@ scan_loop (loop_start, end, unroll_p)
#ifdef AVOID_CCMODE_COPIES
/* Don't try to move insns which set CC registers if we should not
create CCmode register copies. */
for (i = FIRST_PSEUDO_REGISTER; i < max_reg_num (); i++)
for (i = max_reg_num () - 1; i >= FIRST_PSEUDO_REGISTER; i--)
if (GET_MODE_CLASS (GET_MODE (regno_reg_rtx[i])) == MODE_CC)
VARRAY_CHAR (may_not_optimize, i) = 1;
#endif