loop.c (strength_reduce): Compute number of iterations as unsigned HOST_WIDE_INT.
* loop.c (strength_reduce): Compute number of iterations as unsigned HOST_WIDE_INT. From-SVN: r50550
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2002-03-10 Richard Henderson <rth@redhat.com>
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* loop.c (strength_reduce): Compute number of iterations as
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unsigned HOST_WIDE_INT.
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2002-03-10 Richard Henderson <rth@redhat.com>
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* sched-rgn.c (add_branch_dependences): Don't allow insns that throw
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12
gcc/loop.c
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gcc/loop.c
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@ -5225,13 +5225,13 @@ strength_reduce (loop, flags)
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/* In case number of iterations is known, drop branch prediction note
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in the branch. Do that only in second loop pass, as loop unrolling
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may change the number of iterations performed. */
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if ((flags & LOOP_BCT)
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&& loop_info->n_iterations / loop_info->unroll_number > 1)
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if (flags & LOOP_BCT)
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{
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int n = loop_info->n_iterations / loop_info->unroll_number;
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predict_insn (PREV_INSN (loop->end),
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PRED_LOOP_ITERATIONS,
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REG_BR_PROB_BASE - REG_BR_PROB_BASE / n);
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unsigned HOST_WIDE_INT n
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= loop_info->n_iterations / loop_info->unroll_number;
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if (n > 1)
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predict_insn (PREV_INSN (loop->end), PRED_LOOP_ITERATIONS,
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REG_BR_PROB_BASE - REG_BR_PROB_BASE / n);
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}
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if (loop_dump_stream)
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