Fix cygwin toolchain build failure reported by Geoffrey Noer.
* unroll.c (loop_iterations): Only call loop_find_equiv_value if we have a REG or SUBREG. From-SVN: r25643
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@ -1,3 +1,8 @@
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Mon Mar 8 16:04:44 1999 Jim Wilson <wilson@cygnus.com>
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* unroll.c (loop_iterations): Only call loop_find_equiv_value if we
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have a REG or SUBREG.
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Mon Mar 8 15:27:42 1999 Jeffrey A Law (law@cygnus.com)
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* flow.c (merge_blocks_nomove): For HAVE_cc0 targets, make sure
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@ -3830,7 +3830,11 @@ loop_iterations (loop_start, loop_end, loop_info)
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if (GET_CODE (increment) != CONST_INT)
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{
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increment = loop_find_equiv_value (loop_start, increment);
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/* If we have a REG, check to see if REG holds a constant value. */
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/* ??? Other RTL, such as (neg (reg)) is possible here, but it isn't
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clear if it is worthwhile to try to handle such RTL. */
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if (GET_CODE (increment) == REG || GET_CODE (increment) == SUBREG)
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increment = loop_find_equiv_value (loop_start, increment);
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if (GET_CODE (increment) != CONST_INT)
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{
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