combine.c (make_compound_operation): Swap operands of commutative operation if necessary before returning.
* combine.c (make_compound_operation): Swap operands of commutative operation if necessary before returning. From-SVN: r107219
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2005-11-19 Joseph S. Myers <joseph@codesourcery.com>
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* combine.c (make_compound_operation): Swap operands of
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commutative operation if necessary before returning.
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2005-11-19 Richard Guenther <rguenther@suse.de>
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PR middle-end/23294
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@ -6914,6 +6914,16 @@ make_compound_operation (rtx x, enum rtx_code in_code)
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SUBST (XEXP (x, i), new);
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}
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/* If this is a commutative operation, the changes to the operands
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may have made it noncanonical. */
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if (COMMUTATIVE_ARITH_P (x)
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&& swap_commutative_operands_p (XEXP (x, 0), XEXP (x, 1)))
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{
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tem = XEXP (x, 0);
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SUBST (XEXP (x, 0), XEXP (x, 1));
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SUBST (XEXP (x, 1), tem);
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}
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return x;
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}
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