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Message-ID: <1412203567.2740.488.camel@ubuntu-sellcey>
Subject: Re: [PATCH] Redesign jump threading profile updates
From: Steve Ellcey <sellcey@mips.com>
To: Teresa Johnson <tejohnson@google.com>
CC: Christophe Lyon <christophe.lyon@linaro.org>, Sebastian Pop	<sebpop@gmail.com>, Jeff Law <law@redhat.com>, "gcc-patches@gcc.gnu.org"	<gcc-patches@gcc.gnu.org>, Jan Hubicka <hubicka@ucw.cz>, David Li	<davidxl@google.com>
Date: Wed, 01 Oct 2014 22:46:00 -0000
In-Reply-To: <CAAe5K+XWZEJPkhnM_2TFmh0VN9u_qXpVGfddUZ71YZkD8kMfXg@mail.gmail.com>
References: <CAAe5K+XWZEJPkhnM_2TFmh0VN9u_qXpVGfddUZ71YZkD8kMfXg@mail.gmail.com>
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On Wed, 2014-10-01 at 13:04 -0700, Teresa Johnson wrote:

> 2014-10-01  Teresa Johnson  <tejohnson@google.com>
> 
>         * tree-ssa-threadupdate.c (freqs_to_counts_path): Scale frequencies
>         up when synthesizing counts to avoid rounding errors.

I tried this patch on my MIPS toolchain build but GCC is still failing
while building glibc.

iconv_open.c: In function 'iconv_open':
iconv_open.c:32:1: error: verify_flow_info: Wrong probability of edge
14->18 -920374544
 iconv_open (const char *tocode, const char *fromcode)
 ^
iconv_open.c:32:1: error: verify_flow_info: Wrong probability of edge
14->19 -903724544
iconv_open.c:32:1: internal compiler error: verify_flow_info failed
0x626a70 verify_flow_info()
        /scratch/sellcey/repos/nightly/src/gcc/gcc/cfghooks.c:260
0x9f36e4 cleanup_tree_cfg_noloop
        /scratch/sellcey/repos/nightly/src/gcc/gcc/tree-cfgcleanup.c:765
0x9f36e4 cleanup_tree_cfg()
        /scratch/sellcey/repos/nightly/src/gcc/gcc/tree-cfgcleanup.c:814
0x8eeff4 execute_function_todo
        /scratch/sellcey/repos/nightly/src/gcc/gcc/passes.c:1704
0x8efb23 execute_todo
        /scratch/sellcey/repos/nightly/src/gcc/gcc/passes.c:1808
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.