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Re: wide-int branch timings
- From: Mike Stump <mikestump at comcast dot net>
- To: Richard Biener <richard dot guenther at gmail dot com>
- Cc: "gcc at gcc dot gnu dot org List" <gcc at gcc dot gnu dot org>
- Date: Tue, 15 Oct 2013 14:07:30 -0700
- Subject: Re: wide-int branch timings
- Authentication-results: sourceware.org; auth=none
- References: <93B2CE27-25AF-4C97-8710-9561993C895D at comcast dot net> <CAFiYyc3gQF3bG+aG1Buv+Cu+hkrM7MMJaQf1sUbpk8vK65-=Dg at mail dot gmail dot com> <CAFiYyc0F5h1qU8EMHNVTpY2JWUnThH4kfq0FiCc+8EmdxORfnw at mail dot gmail dot com>
On Oct 15, 2013, at 5:41 AM, Richard Biener <richard.guenther@gmail.com> wrote:
> That said, how do cc1 binary sizes compare branch vs. trunk at
> the last merge point?
$ size /tmp/gcc-*/libexec/gcc/x86_64-unknown-linux-gnu/4.9.0/cc1plus
text data bss dec hex filename
14224227 33960 1061304 15319491 e9c1c3 /tmp/gcc-1/libexec/gcc/x86_64-unknown-linux-gnu/4.9.0/cc1plus
13973978 33952 1061272 15069202 e5f012 /tmp/gcc-base/libexec/gcc/x86_64-unknown-linux-gnu/4.9.0/cc1plus
$ size /tmp/gcc-*/libexec/gcc/x86_64-unknown-linux-gnu/4.9.0/cc1
text data bss dec hex filename
13146268 33864 1038808 14218940 d8f6bc /tmp/gcc-1/libexec/gcc/x86_64-unknown-linux-gnu/4.9.0/cc1
12899907 33856 1038776 13972539 d5343b /tmp/gcc-base/libexec/gcc/x86_64-unknown-linux-gnu/4.9.0/cc1
$ bc -l
14224227/13973978
1.01790821482615759091
13146268/12899907
1.01909788962044455049
1.8% and 1.9% bigger in text. 8 bytes, and 32 bytes bigger in data.