Date: Fri, 3 Jul 92 16:51:14 JST
From: na70103 AT mips DOT cc DOT mie-u DOT ac DOT jp (Makoto Kobayashi)
To: djgpp AT sun DOT soe DOT clarkson DOT edu
Subject: Re: shifting long long ints creates bad assembler


  I am sorry to say that long long left shift works right but 
long long right shift doesn't work.

A C-source such that 
        long long i,j ; i=-1; j=i>>33; 
outputs a illegal code.
 
This is also a problem of i386.md.
H. Ando reported the bug in gnu.gcc.bug and it is easy to correct.

M. Kobayashi


------------------------------------------------------------------------
*** /gcc-2.2/config/i386.md	Sat Jun 13 03:24:06 1992
--- /gcc-2.2/md	Sun Jun 28 23:11:50 1992
***************
*** 2452,2456 ****
  	  xops[0] = gen_rtx (CONST_INT, VOIDmode, INTVAL (xops[0]) - 32);
  
! 	  output_asm_insn (AS2 (sar%2,%0,%2), xops); /* Remaining shift */
  	}
      }
--- 2453,2457 ----
  	  xops[0] = gen_rtx (CONST_INT, VOIDmode, INTVAL (xops[0]) - 32);
  
! 	  output_asm_insn (AS2 (sar%L2,%0,%2), xops); /* Remaining shift */
  	}
      }
***************
*** 2588,2592 ****
  	  xops[0] = gen_rtx (CONST_INT, VOIDmode, INTVAL (xops[0]) - 32);
  
! 	  output_asm_insn (AS2 (shr%2,%0,%2), xops); /* Remaining shift */
  	}
      }
--- 2589,2593 ----
  	  xops[0] = gen_rtx (CONST_INT, VOIDmode, INTVAL (xops[0]) - 32);
  
! 	  output_asm_insn (AS2 (shr%L2,%0,%2), xops); /* Remaining shift */
  	}
      }
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