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Re: [PATCH, i386] Disable HImode fild insn for TARGET_PARTIAL_REG_STALL

> For -march=i686, we are expanding function prologue (.c.00.expand) to:
>
> ...
> (insn 7 8 9 0 (set (reg/v:SI 59 [ x ])
>         (sign_extend:SI (subreg:HI (reg:SI 60) 0))) -1 (nil)
>     (nil))
>
> (note 9 7 10 0 NOTE_INSN_FUNCTION_BEG)
> ...
>
> Note the sign_extend, that is not present for -march=pentium4, where reg
> 59 is in HImode.

config/i386/i386.c:549
const int x86_himode_math = ~(m_PPRO);

-- 
Eric Botcazou
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