On 30 January 2018 at 23:42, Jakub Jelinek <ja...@redhat.com> wrote:
> On Tue, Jan 30, 2018 at 09:05:31PM +0100, Rainer Orth wrote:
>> > this patch fixed ICE that was introduced by Richard Standiford's change to 
>> > reorder
>> > can and want_inline predicates to reduce amount of work done to verify 
>> > inlining limits.
>> > This bypasses check that the function is optimized that makes inliner to 
>> > ICE because
>> > function summary is missing.
>> >
>> > This patch breaks out the expensive limits checking from can predicate to 
>> > new one
>> > which makes code bit more convoluted but I hope to clean things up next 
>> > stage1.
>> [...]
>> >     * g++.dg/torture/pr81360.C: New testcase
>>
>> the new testcase comes out UNRESOLVED everywhere:
>>
>> pr81360.C   -O0   scan-ipa-dump icf "Equal symbols: 0"
>> +UNRESOLVED: g++.dg/torture/pr81360.C   -O1   scan-ipa-dump icf "Equal 
>> symbols: 0"
>> +UNRESOLVED: g++.dg/torture/pr81360.C   -O2   scan-ipa-dump icf "Equal 
>> symbols: 0"
>> +UNRESOLVED: g++.dg/torture/pr81360.C   -O2 -flto   scan-ipa-dump icf "Equal 
>> symbols: 0"
>> +UNRESOLVED: g++.dg/torture/pr81360.C   -O2 -flto -flto-partition=none   
>> scan-ipa-dump icf "Equal symbols: 0"
>> +UNRESOLVED: g++.dg/torture/pr81360.C   -O3 -g   scan-ipa-dump icf "Equal 
>> symbols: 0"
>> +UNRESOLVED: g++.dg/torture/pr81360.C   -Os   scan-ipa-dump icf "Equal 
>> symbols: 0"
>>
>> with
>>
>> g++.dg/torture/pr81360.C   -O0  : dump file does not exist
>>
>> in the log.  The following patch fixes that, tested with the appropriate
>> runtest invocation.
>>
>> I guess this is obvious?
>
> Yes, but I wonder why the test is in g++.dg/torture/, that makes
> no sense for a test with -O2 in dg-options which overrides all the
> optimization options it cycles through.  Move it into g++.dg/ipa/ instead?
>
>         Jakub


Even with Rainer's fix, I've noticed that the new test fails on arm/aarch64:
FAIL: g++.dg/torture/pr81360.C   -O2 -flto -fuse-linker-plugin
-fno-fat-lto-objects   scan-ipa-dump icf "Equal symbols: 0"

Christophe

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