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Re: Question about Machine Description
- From: yazdanbakhsh <amir dot yazdanbakhsh at gmail dot com>
- To: gcc at gcc dot gnu dot org
- Date: Mon, 3 May 2010 03:22:51 -0700 (PDT)
- Subject: Re: Question about Machine Description
- References: <63281.24.163.112.200.1128386718.squirrel@webmail.ncsu.edu>
Dear all,
I'm working on my a gcc compiler for my own written processor with the help
of SimpleScalar.
I want to remove "srav/slav" (immediate arithmetic shift) from the
instruction set. I explore ss.md file but I didn't see any define_ins for
the mentioned instructions, but they are used in other instruction
definitions.
It is also exist for addi/addui. Where I can find the definitions of these
instructions? I want to force gcc to just use register shift and register
add.
Best Regards,
--
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