re PR tree-optimization/69467 (Pattern X * C1 CMP 0 to X CMP 0 causes performance drop on 32-bit x86.)
2016-01-26 Richard Biener <rguenther@suse.de> PR middle-end/69467 * match.pd: Guard X * CST CMP 0 pattern with single_use. From-SVN: r232821
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@ -1,3 +1,8 @@
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2016-01-26 Richard Biener <rguenther@suse.de>
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PR middle-end/69467
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* match.pd: Guard X * CST CMP 0 pattern with single_use.
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2016-01-26 Richard Biener <rguenther@suse.de>
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PR tree-optimization/69452
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@ -1821,12 +1821,13 @@ DEFINE_INT_AND_FLOAT_ROUND_FN (RINT)
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(for cmp (simple_comparison)
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scmp (swapped_simple_comparison)
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(simplify
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(cmp (mult @0 INTEGER_CST@1) integer_zerop@2)
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(cmp (mult@3 @0 INTEGER_CST@1) integer_zerop@2)
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/* Handle unfolded multiplication by zero. */
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(if (integer_zerop (@1))
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(cmp @1 @2)
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(if (ANY_INTEGRAL_TYPE_P (TREE_TYPE (@0))
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&& TYPE_OVERFLOW_UNDEFINED (TREE_TYPE (@0)))
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&& TYPE_OVERFLOW_UNDEFINED (TREE_TYPE (@0))
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&& single_use (@3))
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/* If @1 is negative we swap the sense of the comparison. */
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(if (tree_int_cst_sgn (@1) < 0)
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(scmp @0 @2)
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