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Date: Thu, 21 Nov 2002 03:08:00 -0000
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To: nobody@gcc.gnu.org
Cc: gcc-prs@gcc.gnu.org,
From: Wolfgang Bangerth <bangerth@ticam.utexas.edu>
Subject: Re: c++/2182: -fpic flag gives: ICE instantiate_virtual_regs_1, at
 function.c:3897
Reply-To: Wolfgang Bangerth <bangerth@ticam.utexas.edu>
X-SW-Source: 2002-11/txt/msg00736.txt.bz2
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The following reply was made to PR c++/2182; it has been noted by GNATS.

From: Wolfgang Bangerth <bangerth@ticam.utexas.edu>
To: gcc-gnats@gcc.gnu.org
Cc:  
Subject: Re: c++/2182: -fpic flag gives: ICE instantiate_virtual_regs_1, at
 function.c:3897
Date: Thu, 14 Nov 2002 15:48:10 -0600 (CST)

 Here are 4 variations that generate various internal errors. Please don't 
 ask me whether they make sense, I just tried to trim this down to a 
 minimum and discovered that one can trigger more than one ICE. Some can be 
 reproduced with a plain C compiler, at least one needs the C++ compiler.
 
 --------------1--------------------
 void foo(unsigned char * destination,
          const unsigned char * Y,
          const unsigned char * Cb,
          const unsigned char * Cr,
          int width, int height, int  stride)
 {
   static const unsigned short delta[] = {1};
   static const short scale[] = {1};
 
   asm volatile(
     "emms\n"
     :
     : "r" (destination), "r" (Cb), "r" (Cr), "r" (stride),
     "m" (delta)
     );
 
 -----------------2--------------------
 void foo(unsigned char * destination,
          const unsigned char * Y,
          const unsigned char * Cb,
          const unsigned char * Cr,
          int width, int height, int  stride)
 {
   static const unsigned short delta[] = {1};
   static const short scale[] = {1};
 
   asm volatile(
     "emms\n"
     :
     : "r" (destination), "r" (Cb), "r" (Cr), "r" (stride),
     "m" (delta), "m" (scale)
     );
 }
 
 
 -------------3--------------------------
 void foo(unsigned char * destination,
          const unsigned char * Y,
          const unsigned char * Cb,
          const unsigned char * Cr,
          int width, int height, int  stride)
 {
   static const unsigned short delta[] = {1};
   static const short scale[] = {1};
 
   asm volatile(
     "emms\n"
     :
     : "r" (destination), "r" (Cb), "r" (Cr), "r" (stride),
     "m" (delta), "m" (scale), "m" (width)
     );
 }
 
 
 
 
 ------------4--------------------------
 void foo(unsigned char * destination,
          const unsigned char * Y,
          const unsigned char * Cb,
          const unsigned char * Cr,
          int width, int height, int  stride)
 {
   static const unsigned short delta[];
   static const short scale[];
 
   asm volatile(
     "emms\n"
     :
     : "r" (destination), "r" (Cb), "r" (Cr), "r" (stride),
     "m" (delta), "m" (scale), "m" (width)
     );
 }
 
 
 -------------------------------------------------------------------------
 Wolfgang Bangerth              email:           bangerth@ticam.utexas.edu
                                www: http://www.ticam.utexas.edu/~bangerth