Re: [PATCH] Optimize in RTL vector AND { -1, -1, ... }, IOR { -1, -1, ... } and XOR { -1, -1, ... } (take 2)

[Richard Henderson]

On 09/26/2011 07:55 AM, Jakub Jelinek wrote:
>       * rtl.h (const_tiny_rtx): Change into array of 4 x MAX_MACHINE_MODE
>       from 3 x MAX_MACHINE_MODE.
>       (CONSTM1_RTX): Define.
>       * emit-rtl.c (const_tiny_rtx): Change into array of 4 x MAX_MACHINE_MODE
>         from 3 x MAX_MACHINE_MODE.
>       (gen_rtx_CONST_VECTOR): Use CONSTM1_RTX if all inner constants are
>       CONSTM1_RTX.
>       (init_emit_once): Initialize CONSTM1_RTX for MODE_INT and
>       MODE_VECTOR_INT modes.
>       * simplify-rtx.c (simplify_binary_operation_1) <case IOR, XOR, AND>:
>       Optimize if one operand is CONSTM1_RTX.
>       * config/i386/i386.c (ix86_expand_sse_movcc): Optimize mask ? -1 : x
>       into mask | x.

Ok.


r~