From: Rasmus Villemoes <rv@rasmusvillemoes.dk>
To: GCC Patches <gcc-patches@gcc.gnu.org>
Cc: Richard Biener <richard.guenther@gmail.com>,
Andrew Pinski <pinskia@gmail.com>,
Rasmus Villemoes <rv@rasmusvillemoes.dk>
Subject: [PATCH 0/4] A few optimization patterns
Date: Wed, 21 Jan 2015 10:50:00 -0000 [thread overview]
Message-ID: <1421837394-7619-1-git-send-email-rv@rasmusvillemoes.dk> (raw)
In-Reply-To: <CAFiYyc3mduvq1xqLuj4zZ93Rf2PjbQqxF36Rj8nodAwAMHe9ig@mail.gmail.com>
This adds four optimization patterns to match.pd, along with trivial
test cases. Compiles and works as expected, and 'make check' on x86_64
gives the same number of "unexpected failures" before and after (8
from gfortran.dg/guality/pr41558.f90, 1 from failing to compile
gcc.dg/plugin/ggcplug.c).
I know almost nothing about the internals of gcc, so 4/4 may very well
be considered ugly - it was what I could stitch together from pieces I
picked up here and there.
Rasmus Villemoes (4):
match.pd: Add x + (x & 1) -> (x + 1) & ~1 pattern
match.pd: Add x & ~(x & y) -> x & ~y pattern
match.pd: Add x | ~(x | y) -> x | ~y pattern
match.pd: Add x + ((-x) & m) -> (x + m) & ~m pattern
gcc/match.pd | 27 ++++++++++++++++++
gcc/testsuite/gcc.dg/20150120-1.c | 51 +++++++++++++++++++++++++++++++++
gcc/testsuite/gcc.dg/20150120-2.c | 32 +++++++++++++++++++++
gcc/testsuite/gcc.dg/20150120-3.c | 32 +++++++++++++++++++++
gcc/testsuite/gcc.dg/20150120-4.c | 59 +++++++++++++++++++++++++++++++++++++++
5 files changed, 201 insertions(+)
create mode 100644 gcc/testsuite/gcc.dg/20150120-1.c
create mode 100644 gcc/testsuite/gcc.dg/20150120-2.c
create mode 100644 gcc/testsuite/gcc.dg/20150120-3.c
create mode 100644 gcc/testsuite/gcc.dg/20150120-4.c
--
2.1.3
next prev parent reply other threads:[~2015-01-21 10:50 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-13 22:47 RFC: Two minor " Rasmus Villemoes
2015-01-13 22:56 ` Andrew Pinski
2015-01-14 9:52 ` Richard Biener
2015-01-14 12:45 ` Rasmus Villemoes
2015-01-14 14:01 ` Richard Biener
2015-01-21 10:50 ` Rasmus Villemoes [this message]
2015-01-21 10:50 ` [PATCH 1/4] match.pd: Add x + (x & 1) -> (x + 1) & ~1 pattern Rasmus Villemoes
2015-04-30 9:34 ` Richard Biener
2015-05-01 18:26 ` Jeff Law
2015-01-21 10:55 ` [PATCH 2/4] match.pd: Add x & ~(x & y) -> x & ~y pattern Rasmus Villemoes
2015-05-01 18:29 ` Jeff Law
2015-01-21 10:58 ` [PATCH 3/4] match.pd: Add x | ~(x | y) -> x | " Rasmus Villemoes
2015-01-21 11:32 ` Marek Polacek
2015-01-21 11:17 ` [PATCH 4/4] match.pd: Add x + ((-x) & m) -> (x + m) & ~m pattern Rasmus Villemoes
2015-04-30 9:42 ` Richard Biener
2015-04-30 11:56 ` Marc Glisse
2015-04-30 12:25 ` Richard Biener
2015-01-14 13:14 ` RFC: Two minor optimization patterns Marc Glisse
2015-01-14 13:58 ` Richard Biener
2015-01-14 14:31 ` Marc Glisse
2015-01-14 14:49 ` Richard Biener
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