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Change the (zero_one ==/!= 0) ? y : z <op> y patterns to use multiply rather than (-zero_one) & z

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Since there is a pattern to convert `(-zero_one) & z` into `zero_one * z` already,
it is better if we don't do a secondary transformation. This reduces the extra
statements produced by match-and-simplify on the gimple level too.

gcc/ChangeLog:

	* match.pd ((zero_one ==/!= 0) ? y : z <op> y): Use
	multiply rather than negation/bit_and.
This commit is contained in:
Andrew Pinski 2023-06-07 07:43:50 -07:00
parent 7ceed7e3e2
commit 52c92fb3f4
1 changed files with 4 additions and 4 deletions
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8
gcc/match.pd
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@ -3695,7 +3695,7 @@ DEFINE_INT_AND_FLOAT_ROUND_FN (RINT)
(cond (le @0 integer_zerop@1) (negate@2 @0) integer_zerop@1)
(max @2 @1))
/* (zero_one == 0) ? y : z <op> y -> (-(typeof(y))zero_one & z) <op> y */
/* (zero_one == 0) ? y : z <op> y -> ((typeof(y))zero_one * z) <op> y */
(for op (bit_xor bit_ior)
(simplify
(cond (eq zero_one_valued_p@0
@ -3705,9 +3705,9 @@ DEFINE_INT_AND_FLOAT_ROUND_FN (RINT)
(if (INTEGRAL_TYPE_P (type)
&& TYPE_PRECISION (type) > 1
&& (INTEGRAL_TYPE_P (TREE_TYPE (@0))))
(op (bit_and (negate (convert:type @0)) @2) @1))))
(op (mult (convert:type @0) @2) @1))))
/* (zero_one != 0) ? z <op> y : y -> (-(typeof(y))zero_one & z) <op> y */
/* (zero_one != 0) ? z <op> y : y -> ((typeof(y))zero_one * z) <op> y */
(for op (bit_xor bit_ior)
(simplify
(cond (ne zero_one_valued_p@0
@ -3717,7 +3717,7 @@ DEFINE_INT_AND_FLOAT_ROUND_FN (RINT)
(if (INTEGRAL_TYPE_P (type)
&& TYPE_PRECISION (type) > 1
&& (INTEGRAL_TYPE_P (TREE_TYPE (@0))))
(op (bit_and (negate (convert:type @0)) @2) @1))))
(op (mult (convert:type @0) @2) @1))))
/* Simplifications of shift and rotates. */