Re: help for arm avr bfin cris frv h8300 m68k mcore mmix pdp11 rs6000 sh vax

[Kaz Kojima <kkojima at rr dot iij4u dot or dot jp>]

Paolo Bonzini <bonzini@gnu.org> wrote:
> I would like to know whether for avr,bfin,cris,frv,h8300,pdp11,rs6000
> (which define SHIFT_COUNT_TRUNCATED as 0) and for mcore,sh,vax (which
> do not define it at all) it is right that shift counts are never
> truncated.

sh defines SHIFT_COUNT_TRUNCATED according to target and
there are comments for it:

/* Immediate shift counts are truncated by the output routines (or was it
   the assembler?).  Shift counts in a register are truncated by SH.  Note
   that the native compiler puts too large (> 32) immediate shift counts
   into a register and shifts by the register, letting the SH decide what
   to do instead of doing that itself.  */
/* ??? The library routines in lib1funcs.asm truncate the shift count.
   However, the SH3 has hardware shifts that do not truncate exactly as gcc
   expects - the sign bit is significant - so it appears that we need to
   leave this zero for correct SH3 code.  */
#define SHIFT_COUNT_TRUNCATED (! TARGET_SH3 && ! TARGET_SH2A)


Is this enough information for you?

Regards,
	kaz