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Re: MIPS R3900 'bgt' with gcc 3.0/binutils 2.11.2


> Date: Sun, 12 Aug 2001 21:35:14 +0100
> From: Jonathan Larmour <jlarmour@redhat.com>
> To: binutils@sources.redhat.com, gcc@gcc.gnu.org

> clock.s:2652: Error: opcode not supported on this processor: R3900 (MIPS1)
> `bgtul'

This is a macro, first available with mips2 according to opcodes.

> But there is definitely a gcc bug, and possibly also a libopcodes
> bug. Can someone advise?

It was a gcc bug.  This bug has been fixed in recent compiler work.
The fixed looked something like:

Index: mips.h
===================================================================
RCS file: /cvs/gcc/gcc/gcc/config/mips/mips.h,v
retrieving revision 1.114
retrieving revision 1.115
diff -c -p -r1.114 -r1.115
*** mips.h 2001/06/26 06:36:37	1.114
--- mips.h 2001/07/06 07:32:35	1.115
*************** extern void		sbss_section PARAMS ((void)
*** 580,586 ****
  /* This is meant to be redefined in the host dependent files.  */
  #define SUBTARGET_TARGET_OPTIONS
  
! #define GENERATE_BRANCHLIKELY  (!TARGET_MIPS16 && (TARGET_MIPS3900 || ISA_HAS_BRANCHLIKELY))
  
  /* Generate three-operand multiply instructions for both SImode and DImode.  */
  #define GENERATE_MULT3         (TARGET_MIPS3900				\
--- 597,603 ----
  /* This is meant to be redefined in the host dependent files.  */
  #define SUBTARGET_TARGET_OPTIONS
  
! #define GENERATE_BRANCHLIKELY  (!TARGET_MIPS16 && ISA_HAS_BRANCHLIKELY)
  
  /* Generate three-operand multiply instructions for both SImode and DImode.  */
  #define GENERATE_MULT3         (TARGET_MIPS3900				\
------------------------------


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