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Add V2QImode shift operations and split them to synthesized double HI/LO QImode operations with integer registers. Also robustify arithmetic split patterns. 2022-01-13 Uroš Bizjak <ubizjak@gmail.com> gcc/ChangeLog: PR target/103861 * config/i386/i386.md (*ashlqi_ext<mode>_2): New insn pattern. (*<any_shiftrt:insn>qi_ext<mode>_2): Ditto. * config/i386/mmx.md (<any_shift:insn>v2qi): New insn_and_split pattern. gcc/testsuite/ChangeLog: PR target/103861 * gcc.target/i386/pr103861.c (shl,ashr,lshr): New tests.
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