[PATCH] i386: Remove constraints when used with constant integer predicates.

Sun, 15 May 2022 13:10:29 -0700 

const_int_operand and other const*_operand predicates do not need
constraints when the constraint is inherited from the range of
constant integer predicate.  Remove the constraint in case all
alternatives use the same inherited constraint.

2022-05-15  Uroš Bizjak  <ubiz...@gmail.com>

gcc/ChangeLog:

    * config/i386/i386.md: Remove constraints when used with
    const_int_operand, const0_operand, const_1_operand, constm1_operand,
    const8_operand, const128_operand, const248_operand, const123_operand,
    const2367_operand, const1248_operand, const359_operand,
    const_4_or_8_to_11_operand, const48_operand, const_0_to_1_operand,
    const_0_to_3_operand, const_0_to_4_operand, const_0_to_5_operand,
    const_0_to_7_operand, const_0_to_15_operand, const_0_to_31_operand,
    const_0_to_63_operand, const_0_to_127_operand, const_0_to_255_operand,
    const_0_to_255_mul_8_operand, const_1_to_31_operand,
    const_1_to_63_operand, const_2_to_3_operand, const_4_to_5_operand,
    const_4_to_7_operand, const_6_to_7_operand, const_8_to_9_operand,
    const_8_to_11_operand, const_8_to_15_operand, const_10_to_11_operand,
    const_12_to_13_operand, const_12_to_15_operand, const_14_to_15_operand,
    const_16_to_19_operand, const_16_to_31_operand, const_20_to_23_operand,
    const_24_to_27_operand and const_28_to_31_operand.
    * config/i386/mmx.md: Ditto.
    * config/i386/sse.md: Ditto.
    * config/i386/subst.md: Ditto.
    * config/i386/sync.md: Ditto.

Bootstrapped and regression tested on x86_64-linux-gnu {,-m32}.

Pushed to master.

Uros.

Attachment: p.diff.txt.gz
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