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Re: [PATCH] Redesign jump threading profile updates
- From: Teresa Johnson <tejohnson at google dot com>
- To: Steve Ellcey <sellcey at mips dot com>
- Cc: Christophe Lyon <christophe dot lyon at linaro dot org>, Sebastian Pop <sebpop at gmail dot com>, Jeff Law <law at redhat dot com>, "gcc-patches at gcc dot gnu dot org" <gcc-patches at gcc dot gnu dot org>, Jan Hubicka <hubicka at ucw dot cz>, David Li <davidxl at google dot com>
- Date: Thu, 2 Oct 2014 08:44:43 -0700
- Subject: Re: [PATCH] Redesign jump threading profile updates
- Authentication-results: sourceware.org; auth=none
- References: <CAAe5K+XWZEJPkhnM_2TFmh0VN9u_qXpVGfddUZ71YZkD8kMfXg at mail dot gmail dot com> <1412203567 dot 2740 dot 488 dot camel at ubuntu-sellcey> <CAAe5K+UkevCj9QK_oTXtKUtAKX2KrhTbQ-TFnX17Yc5oOUBJOQ at mail dot gmail dot com>
On Wed, Oct 1, 2014 at 10:02 PM, Teresa Johnson <tejohnson@google.com> wrote:
> On Wed, Oct 1, 2014 at 3:46 PM, Steve Ellcey <sellcey@mips.com> wrote:
>> 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.
>>
>
> Will take a look. In case I can't reproduce it with the aarch64
> cross-compiler or x86_64, can you give me the preprocessed source? And
> also the instructions for how to configure for MIPS.
Hi Steve,
Please do send me the preprocessed source and if possible also
instructions for configuring a MIPS cross-compiler. I haven't been
able to reproduce this with either x86_64 or the aarch64
cross-compiler I built yesterday. But I can't reproduce Christophe's
failure either with my aarch64-configured glibc, so my version or
headers must be different.
Thanks!
Teresa
>
> Teresa
>
> --
> Teresa Johnson | Software Engineer | tejohnson@google.com | 408-460-2413
--
Teresa Johnson | Software Engineer | tejohnson@google.com | 408-460-2413