From: David Malcolm <dmalcolm@redhat.com>
To: gcc-patches@gcc.gnu.org
Subject: Re: [PATCH 4/4] Initial version of RTL frontend
Date: Tue, 10 May 2016 14:14:00 -0000 [thread overview]
Message-ID: <1462889636.11310.6.camel@redhat.com> (raw)
In-Reply-To: <1462394970-55471-5-git-send-email-dmalcolm@redhat.com>
On Wed, 2016-05-04 at 16:49 -0400, David Malcolm wrote:
[...snip...]
>
> I wrote this by compiling a test.c with -fdump-rtl-all on
> x86_64-pc-linux-gnu, and then attempting to load the state at each
> pass, and then trying to run just one pass, and fixing bugs until the
> dump output from each pass was the same as when running the pass from
> cc1. I've only done this with a small subset of passes, and with a
> very
> simple test case, so I'm sure there are plenty of bugs and "x86_64
> -isms"
> remaining.
[...snip...]
On the subject of "x86_64-isms", a couple of issues I ran into when
testing with --target=aarch64-linux-gnu:
* roundtrip.exp fails due to different register names so e.g. this from
x86_64:
(reg:SI 5 di [ i ]))
becomes this after roundtripping on aarch64:
(reg:SI 5 x5 [ i ]))
(i.e. "di" vs "x5" for register 5).
* unknown modes e.g. this from x86_64:
(reg:CCGC 17 flags)
fails on aarch64 due to the lack of a "CCGC" mode.
next prev parent reply other threads:[~2016-05-10 14:14 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-04 20:24 [PATCH 0/4] RFC: " David Malcolm
2016-05-04 20:24 ` [PATCH 1/4] Make argv const char ** in read_md_files etc David Malcolm
2016-05-06 10:33 ` Richard Biener
2016-05-06 20:43 ` Jakub Jelinek
2016-05-04 20:24 ` [PATCH 3/4] Extract deferred-location handling from jit David Malcolm
2016-05-06 10:36 ` Richard Biener
2016-05-04 20:24 ` [PATCH 2/4] Move name_to_pass_map into class pass_manager David Malcolm
2016-05-06 10:33 ` Richard Biener
2016-05-04 20:26 ` [PATCH 4/4] Initial version of RTL frontend David Malcolm
2016-05-10 14:14 ` David Malcolm [this message]
2016-05-10 14:17 ` Richard Biener
2016-05-10 17:02 ` Jeff Law
2016-05-10 18:05 ` Richard Biener
2016-05-10 18:20 ` Bernd Schmidt
2016-05-11 11:06 ` Ramana Radhakrishnan
2016-05-11 11:22 ` Bernd Schmidt
2016-05-16 22:29 ` Jeff Law
2016-05-09 9:44 ` [PATCH 0/4] RFC: " Richard Biener
2016-05-10 20:35 ` [PATCH] [rtlfe] Barebones implementation of "__RTL"; next steps? David Malcolm
2016-05-11 1:25 ` Trevor Saunders
2016-05-11 9:57 ` Richard Biener
2016-05-12 14:29 ` David Malcolm
2016-05-13 9:40 ` Richard Biener
2016-05-16 18:48 ` Jeff Law
2016-05-17 11:19 ` Richard Biener
2016-05-16 22:42 ` [PATCH 0/4] RFC: RTL frontend Jeff Law
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