From: Sandeep K Chaudhary <babbusandy2006@gmail.com>
To: "gcc-help@gcc.gnu.org" <gcc-help@gcc.gnu.org>, gcc@gcc.gnu.org
Subject: GIMPLE pass - Assignment evaluation
Date: Mon, 16 Dec 2013 21:10:00 -0000 [thread overview]
Message-ID: <CAEEAEzV9pkYX_fkH2R=gRSJvF6P2CdGmJuMktC31rvgu_jPuYg@mail.gmail.com> (raw)
Hi Guys,
I am writing a GIMPLE pass in which I need to inspect the assignments.
For example, for the below statements, I need to find the value of the
second and third assignments which are '2' and '7'.
VAR1 = 1;
VAR1++;
VAR1 = VAR1 + 5;
But the GIMPLE IR only has the following statements i.e. no optimization.
VAR1_2 = 1;
VAR1_3 = VAR1_2 + 1;
VAR1_4 = VAR1_3 + 5;
How can I make it perform calculations on RHS? Are there some flags
that I can enable?
I tried -O1 and higher optimization levels but I don't see any
difference. This is how I am building and loading my plugin...
g++ -I`g++ -print-file-name=plugin`/include -fPIC -shared -O1
gimple_pass.c -o plugin.so
g++ -fplugin=/home/sandeep/myplugin/gimple/plugin.so -O1 -c test.c
Also, I thought of going with RTL passes but RTL IR seems too complex
for my use and also it's not suitable for high level optimizations.
Please suggest.
Thanks and regards,
Sandeep.
next reply other threads:[~2013-12-16 21:10 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-16 21:10 Sandeep K Chaudhary [this message]
2013-12-17 1:33 ` David Malcolm
2013-12-17 6:24 ` Sandeep K Chaudhary
2013-12-17 6:41 ` Uday P. Khedker
2013-12-17 7:26 ` Sandeep K Chaudhary
-- strict thread matches above, loose matches on Subject: below --
2013-12-09 23:05 Sandeep K Chaudhary
2013-07-02 3:24 Sandeep K Chaudhary
2013-07-02 5:44 ` Marc Glisse
2013-07-02 17:09 ` Sandeep K Chaudhary
2013-07-10 8:18 ` Sandeep K Chaudhary
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