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Re: optimization/7702: [PATCH] Make reload-cse honor CANNOT_CHANGE_MODE_CLASS


The following reply was made to PR optimization/7702; it has been noted by GNATS.

From: Falk Hueffner <falk.hueffner@student.uni-tuebingen.de>
To: Richard Henderson <rth@redhat.com>
Cc: gcc-patches@gcc.gnu.org,  gcc-gnats@gcc.gnu.org
Subject: Re: optimization/7702: [PATCH] Make reload-cse honor CANNOT_CHANGE_MODE_CLASS
Date: 15 Feb 2003 23:30:31 +0100

 --=-=-=
 
 Falk Hueffner <falk.hueffner@student.uni-tuebingen.de> writes:
 
 > Richard Henderson <rth@redhat.com> writes:
 > > I'm fairly certain that the exact form of this macro was different
 > > in both 3.3 and 3.2.  Would you generate and test patches for these
 > > branches?
 > 
 > I have this patch for 3.2. I'll check out 3.3.
 
 It needs the same patch as 3.4. I've attached it.
 
 -- 
 	Falk
 
 --=-=-=
 Content-Type: text/x-patch
 Content-Disposition: attachment; filename=reload-cse-3.3.patch
 
 --- reload1.c~	2003-02-15 23:27:30.000000000 +0100
 +++ reload1.c	2003-02-15 23:26:29.000000000 +0100
 @@ -8275,7 +8275,13 @@
  	{
  #ifdef LOAD_EXTEND_OP
  	  if (GET_MODE_BITSIZE (GET_MODE (SET_DEST (set))) < BITS_PER_WORD
 -	      && extend_op != NIL)
 +	      && extend_op != NIL
 +#ifdef CANNOT_CHANGE_MODE_CLASS
 +	      && !CANNOT_CHANGE_MODE_CLASS (GET_MODE (SET_DEST (set)),
 +					    word_mode,
 +					    REGNO_REG_CLASS (REGNO (SET_DEST (set))))
 +#endif
 +	      )
  	    {
  	      rtx wide_dest = gen_rtx_REG (word_mode, REGNO (SET_DEST (set)));
  	      ORIGINAL_REGNO (wide_dest) = ORIGINAL_REGNO (SET_DEST (set));
 
 --=-=-=--


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