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[PATCH, i386]: Use *mmx_pinsrb some more

From: Uros Bizjak <ubizjak at gmail dot com>
To: "gcc-patches at gcc dot gnu dot org" <gcc-patches at gcc dot gnu dot org>
Date: Wed, 14 Aug 2019 20:49:06 +0200
Subject: [PATCH, i386]: Use *mmx_pinsrb some more

We can generate {v,}pinsrb in ix86_expand_vector_init_one_nonzero and
ix86_expand_vector_init_one_var. {v,}pinsrd is already generated where
optimal.

2019-08-14  Uroš Bizjak  <ubizjak@gmail.com>

    * config/i386/i386-expand.c (ix86_expand_vector_init_one_nonzero)
    <case E_V8QImode>: Use vector_set path for
    TARGET_MMX_WITH_SSE && TARGET_SSE4_1.
    (ix86_expand_vector_init_one_var) <case E_V8QImode>:
    Do not widen for TARGET_MMX_WITH_SSE && TARGET_SSE4_1.

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

Committed to mainline SVN.

Uros.

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