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Re: patch: pre-compute HARD_REGNO_MODE_OK on ppc
- From: David Edelsohn <dje at watson dot ibm dot com>
- To: Aldy Hernandez <aldyh at redhat dot com>
- Cc: gcc-patches at gcc dot gnu dot org
- Date: Tue, 04 May 2004 12:42:56 -0400
- Subject: Re: patch: pre-compute HARD_REGNO_MODE_OK on ppc
- References: <20040504163038.GA7302@redhat.com>
What's the compile time performance impact?
What's wrong with a two dimensional array of size
NUM_MACHINE_MODES x FIRST_PSEUDO_REGISTER, instead of manual address
indexing arithmetic?
David