Another unrelated SSE patch

[Jan Hubicka]

Hi
This macro is defined in the David's patch.  It seems to make sense
to avoid gcc from using TImodes for normal computations.  Note that
macro also defines MAX_INTEGER_COMPUTATION_OK, that is needed to allow
RTX expressions for TImodes:

/* Value should be nonzero if EXP is okay for MAX_INTEGER_COMPUTATION_MODE */
#define MAX_INTEGER_COMPUTATION_OK(exp) \
  (TARGET_SSE && \
      (TREE_CODE (exp) == NOP_EXPR || TREE_CODE (exp) == RTL_EXPR)) 

Can someone please contribute the relevant bits in expr.c?

Honza

Wed Feb 21 21:11:41 CET 2001  Jan Hubicka  <jh@suse.cz>

	* i386.h (MAX_INTEGER_COMPUTATION_MODE): Define.

Index: i386.h
===================================================================
RCS file: /cvs/gcc/egcs/gcc/config/i386/i386.h,v
retrieving revision 1.156
diff -c -3 -p -r1.156 i386.h
*** i386.h	2001/02/19 15:47:30	1.156
--- i386.h	2001/02/21 20:11:25
*************** extern int ix86_arch;
*** 565,570 ****
--- 565,578 ----
   ((MODE) == XFmode || (MODE) == TFmode || ((MODE) == TImode) \
    || (MODE) == V4SFmode	|| (MODE) == V4SImode)
  
+ /* Define this to the largest integer machine mode which can be used
+    for operations other than load, store and copy operations.
+ 
+    You need only define this macro if the target holds values larger
+    than `word_mode' in general purpose registers.  Most targets
+    should not define this macro.  */
+ #define MAX_INTEGER_COMPUTATION_MODE DImode
+ 
  /* The published ABIs say that doubles should be aligned on word
     boundaries, so lower the aligment for structure fields unless
     -malign-double is set.  */