Re: [PATCH] Sparc .md optimizations (mul/div/shifts)

[Richard Henderson <rth at cygnus dot com>]

On Mon, Jun 07, 1999 at 01:39:37PM +0200, Jakub Jelinek wrote:
> Mon Jun  7 12:42:11 1999  Jakub Jelinek  <jj@ultra.linux.cz>
> 
> 	* config/sparc/linux64.h (CC1_SPEC): Preserve CPU specified by
> 	the user if using the non-default arch size in BI_ARCH configuration.
> 	* config/sparc/sol2-sld-64.h (CC1_SPEC): Ditto.
> 
> 	* config/sparc/sparc.md (cmp_mul_set, cmp_udiv_cc_set):
> 	Fix patterns so that they actually match.
> 	(cmp_sdiv_cc_set): Ditto, also don't require g0 to be zero.
> 	(mulsidi3_sp64, const_mulsidi3_sp64): New patterns.
> 	(const_mulsidi3_sp32): Renamed from const_mulsidi3, only on
> 	TARGET_HARD_MUL32.
> 	(mulsidi3): Reflect this in the expand.
> 	(smulsi3_highpart): Only on TARGET_ARCH32.
> 	(umulsidi3_sp64, const_umulsidi3_sp64): New patterns.
> 	(const_umulsidi3_sp32): Renamed from const_umulsidi3.
> 	(umulsidi3): Reflect this in the expand.
> 	(umulsi3_highpart): Only on TARGET_ARCH32.
> 	(divsi3_sp32): Renamed from divsi3, only on TARGET_ARCH32,
> 	don't require g0 to be zero.
> 	(udivsi3_sp32): Renamed from udivsi3, only on TARGET_ARCH32.
> 	({,u}divsi3): New expands.
> 	({,u}divsi3_sp64): New patterns.
> 	(after lshrdi3_v8plus): Four new patterns to help combiner
> 	optimizing nested mixed mode shifts.
> 
> 	* config/sparc/sparc.c (sparc_override_options): Use deprecated
> 	v8 instructions if optimizing for UltraSPARC I, II, IIi, as it
> 	speed things up. Don't use them by default on plain v9 in 64bit
> 	mode, according to what SPAMv9 sais.
> 
> 	* config/sparc/sparc.h: Fix comments, e.g. Linux already preserves
> 	top 32 bits of %[og][0-7] in signal handlers.
> 	Also, TARGET_HARD_MUL32 now is only true for TARGET_ARCH32.

Applied, thanks.



r~