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loop.c (strength_reduce): Compute number of iterations as unsigned HOST_WIDE_INT.

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* loop.c (strength_reduce): Compute number of iterations as
        unsigned HOST_WIDE_INT.

From-SVN: r50550
This commit is contained in:
Richard Henderson 2002-03-10 15:46:14 -08:00 committed by Richard Henderson
parent 8d8a083e9c
commit 26b738be01
2 changed files with 11 additions and 6 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2002-03-10 Richard Henderson <rth@redhat.com>
* loop.c (strength_reduce): Compute number of iterations as
unsigned HOST_WIDE_INT.
2002-03-10 Richard Henderson <rth@redhat.com>
* sched-rgn.c (add_branch_dependences): Don't allow insns that throw

12
gcc/loop.c
View File

@ -5225,13 +5225,13 @@ strength_reduce (loop, flags)
/* In case number of iterations is known, drop branch prediction note
in the branch. Do that only in second loop pass, as loop unrolling
may change the number of iterations performed. */
if ((flags & LOOP_BCT)
&& loop_info->n_iterations / loop_info->unroll_number > 1)
if (flags & LOOP_BCT)
{
int n = loop_info->n_iterations / loop_info->unroll_number;
predict_insn (PREV_INSN (loop->end),
PRED_LOOP_ITERATIONS,
REG_BR_PROB_BASE - REG_BR_PROB_BASE / n);
unsigned HOST_WIDE_INT n
= loop_info->n_iterations / loop_info->unroll_number;
if (n > 1)
predict_insn (PREV_INSN (loop->end), PRED_LOOP_ITERATIONS,
REG_BR_PROB_BASE - REG_BR_PROB_BASE / n);
}
if (loop_dump_stream)