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b4e82619bc
PR target/20342
PR target/20447
* config/i386/i386.c (print_operand): Handle vector zeros.
(ix86_split_to_parts): Handle CONST_VECTOR.
(ix86_hard_regno_mode_ok): Allow MMX modes in general regs.
(ix86_modes_tieable_p): Use ix86_hard_regno_mode_ok to decide
what modes to tie for MMX and SSE registers.
* config/i386/i386.h (MMX_REG_MODE_P): Remove.
* config/i386/i386.md: Extend move 0 -> xor peephole to apply
to vector modes as well.
* config/i386/predicates.md (const0_operand): Handle VOIDmode
properly as an input mode.
From-SVN: r97663
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