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* match.pd: Use single_use throughout.

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From-SVN: r224368
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Marek Polacek 2015-06-11 10:42:44 +00:00 committed by Marek Polacek
parent 06b8f7acf3
commit 6e28e5162a
2 changed files with 8 additions and 5 deletions
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4
gcc/ChangeLog
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@ -1,3 +1,7 @@
2015-06-11 Marek Polacek <polacek@redhat.com>
* match.pd: Use single_use throughout.
2015-06-11 Kyrylo Tkachov <kyrylo.tkachov@arm.com>
* config/arm/arm.c (arm_option_params_internal): When optimising

9
gcc/match.pd
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@ -301,7 +301,7 @@ along with GCC; see the file COPYING3. If not see
/* x + (x & 1) -> (x + 1) & ~1 */
(simplify
(plus:c @0 (bit_and@2 @0 integer_onep@1))
(if (TREE_CODE (@2) != SSA_NAME || has_single_use (@2))
(if (single_use (@2))
(bit_and (plus @0 @1) (bit_not @1))))
/* x & ~(x & y) -> x & ~y */
@ -309,7 +309,7 @@ along with GCC; see the file COPYING3. If not see
(for bitop (bit_and bit_ior)
(simplify
(bitop:c @0 (bit_not (bitop:c@2 @0 @1)))
(if (TREE_CODE (@2) != SSA_NAME || has_single_use (@2))
(if (single_use (@2))
(bitop @0 (bit_not @1)))))
/* (x | y) & ~x -> y & ~x */
@ -449,15 +449,14 @@ along with GCC; see the file COPYING3. If not see
/* (x & ~m) | (y & m) -> ((x ^ y) & m) ^ x */
(simplify
(bit_ior:c (bit_and:c@3 @0 (bit_not @2)) (bit_and:c@4 @1 @2))
(if ((TREE_CODE (@3) != SSA_NAME || has_single_use (@3))
&& (TREE_CODE (@4) != SSA_NAME || has_single_use (@4)))
(if (single_use (@3) && single_use (@4))
(bit_xor (bit_and (bit_xor @0 @1) @2) @0)))
/* Associate (p +p off1) +p off2 as (p +p (off1 + off2)). */
(simplify
(pointer_plus (pointer_plus@2 @0 @1) @3)
(if (TREE_CODE (@2) != SSA_NAME || has_single_use (@2))
(if (single_use (@2))
(pointer_plus @0 (plus @1 @3))))
/* Pattern match