misc ppc SPE intrinsic fixes

[Jim Wilson <wilson at redhat dot com>]

This adds two subtract intrinsics that weren't in the initial ABI document.

It removes 8 evmlws*f* patterns that were deleted from the ABI, and which were
earlier removed from the spe.md file, the rs6000.c file, binutils, etc.

It reverses the operands of two subtract immediate builtin function calls to
get the right behaviour.  We are planning to fix the builtin functions so
that this can be removed in the future.

This was all reviewed and approved by Aldy Hernandez.

2002-12-20  Jim Wilson  <wilson@redhat.com>

	* config/rs6000/spe.h (__ev_subifw): Reverse arguments.
	(__ev_subw, __ev_subiw): New.
	(ev_mwlssf, ev_mwlsmf, ev_mwlssfa, ev_mwlsmfa, ev_mwlssfaaw,
	ev_mwlsmfaaw, ev_mwlssfanw, ev_mwlsmfanw): Delete.

Index: spe.h
===================================================================
RCS file: /cvs/gcc/gcc/gcc/config/rs6000/spe.h,v
retrieving revision 1.5
diff -p -r1.5 spe.h
*** spe.h	5 Dec 2002 23:02:19 -0000	1.5
--- spe.h	20 Dec 2002 17:10:58 -0000
*************** typedef int 			__vector __ev64_opaque__;
*** 54,60 ****
  #define __ev_addw(a,b) __builtin_spe_evaddw((__v2si) (a), (__v2si) (b))
  #define __ev_addiw(a,b) __builtin_spe_evaddiw ((__v2si) (a), (b))
  #define __ev_subfw(a,b) __builtin_spe_evsubfw ((__v2si) (a), (__v2si) (b))
! #define __ev_subifw(a,b) __builtin_spe_evsubifw ((__v2si) (a), (b))
  #define __ev_abs(a) __builtin_spe_evabs ((__v2si) (a))
  #define __ev_neg(a) __builtin_spe_evneg ((__v2si) (a))
  #define __ev_extsb(a) __builtin_spe_evextsb ((__v2si) (a))
--- 54,64 ----
  #define __ev_addw(a,b) __builtin_spe_evaddw((__v2si) (a), (__v2si) (b))
  #define __ev_addiw(a,b) __builtin_spe_evaddiw ((__v2si) (a), (b))
  #define __ev_subfw(a,b) __builtin_spe_evsubfw ((__v2si) (a), (__v2si) (b))
! #define __ev_subw(a,b) __builtin_spe_evsubfw ((__v2si) (b), (__v2si) (a))
! /* ??? The spe_evsubifw pattern accepts operands reversed, so we need to also
!    reverse them here between the intrinsic and the builtin function.  */
! #define __ev_subifw(a,b) __builtin_spe_evsubifw ((__v2si) (b), (a))
! #define __ev_subiw(a,b) __builtin_spe_evsubifw ((__v2si) (a), (b))
  #define __ev_abs(a) __builtin_spe_evabs ((__v2si) (a))
  #define __ev_neg(a) __builtin_spe_evneg ((__v2si) (a))
  #define __ev_extsb(a) __builtin_spe_evextsb ((__v2si) (a))
*************** typedef int 			__vector __ev64_opaque__;
*** 224,247 ****
  #define __ev_mwhumf __ev_mwhumi
  #define __ev_mwhumfa __ev_mwhumia
  
- #define __ev_mwlssf(a, b) __builtin_spe_evmwlssf ((__v2si) (a), (__v2si) (b))
- #define __ev_mwlsmf(a, b) __builtin_spe_evmwlsmf ((__v2si) (a), (__v2si) (b))
  #define __ev_mwlumi(a, b) __builtin_spe_evmwlumi ((__v2si) (a), (__v2si) (b))
- #define __ev_mwlssfa(a, b) __builtin_spe_evmwlssfa ((__v2si) (a), (__v2si) (b))
- #define __ev_mwlsmfa(a, b) __builtin_spe_evmwlsmfa ((__v2si) (a), (__v2si) (b))
  #define __ev_mwlumia(a, b) __builtin_spe_evmwlumia ((__v2si) (a), (__v2si) (b))
  #define __ev_mwlumiaaw(a, b) __builtin_spe_evmwlumiaaw ((__v2si) (a), (__v2si) (b))
  
- #define __ev_mwlssfaaw(a, b) __builtin_spe_evmwlssfaaw ((__v2si) (a), (__v2si) (b))
  #define __ev_mwlssiaaw(a, b) __builtin_spe_evmwlssiaaw ((__v2si) (a), (__v2si) (b))
- #define __ev_mwlsmfaaw(a, b) __builtin_spe_evmwlsmfaaw ((__v2si) (a), (__v2si) (b))
  #define __ev_mwlsmiaaw(a, b) __builtin_spe_evmwlsmiaaw ((__v2si) (a), (__v2si) (b))
  #define __ev_mwlusiaaw(a, b) __builtin_spe_evmwlusiaaw ((__v2si) (a), (__v2si) (b))
  #define __ev_mwlusiaaw(a, b) __builtin_spe_evmwlusiaaw ((__v2si) (a), (__v2si) (b))
  
- #define __ev_mwlssfanw(a, b) __builtin_spe_evmwlssfanw ((__v2si) (a), (__v2si) (b))
  #define __ev_mwlssianw(a, b) __builtin_spe_evmwlssianw ((__v2si) (a), (__v2si) (b))
- #define __ev_mwlsmfanw(a, b) __builtin_spe_evmwlsmfanw ((__v2si) (a), (__v2si) (b))
  #define __ev_mwlsmianw(a, b) __builtin_spe_evmwlsmianw ((__v2si) (a), (__v2si) (b))
  #define __ev_mwlusianw(a, b) __builtin_spe_evmwlusianw ((__v2si) (a), (__v2si) (b))
  #define __ev_mwlumianw(a, b) __builtin_spe_evmwlumianw ((__v2si) (a), (__v2si) (b))
--- 228,243 ----