PR ipa/59831 (ipa-cp devirt issues)

[Paolo Carlini]

Hi,

On 02/04/2014 06:43 AM, Jan Hubicka wrote:
> Hi,
> this patch solves the actual ICE in PR59831 by using ipa-devirt instead of
> gimple_extract_devirt_binfo_from_cst as discussed in the first post.
>
> Honza
>
> 	PR ipa/59831
> 	* ipa-cp.c (ipa_get_indirect_edge_target_1): Use ipa-devirt
> 	to figure out targets of polymorphic calls with known decl.
> 	* ipa-prop.c (try_make_edge_direct_virtual_call): Likewise.
> 	* ipa-utils.h (get_polymorphic_call_info_from_invariant): Declare.
> 	* ipa-devirt.c (get_polymorphic_call_info_for_decl): Break out from ...
> 	(get_polymorphic_call_info): ... here.
> 	(get_polymorphic_call_info_from_invariant): New function.
>
> 	* g++.dg/ipa/devirt-22.C: New testcase.
Today I'm seeing regressions in the libstdc++-v3 testsuite in the form 
of ICEs exactly in ipa_get_indirect_edge_target_1:

FAIL: 27_io/basic_stringbuf/sputbackc/char/9425.cc (test for excess errors)
WARNING: 27_io/basic_stringbuf/sputbackc/char/9425.cc compilation failed 
to produce executable
FAIL: 27_io/basic_stringbuf/sputbackc/wchar_t/9425.cc (test for excess 
errors)
WARNING: 27_io/basic_stringbuf/sputbackc/wchar_t/9425.cc compilation 
failed to produce executable
FAIL: 27_io/basic_stringbuf/str/char/2.cc (test for excess errors)
WARNING: 27_io/basic_stringbuf/str/char/2.cc compilation failed to 
produce executable
FAIL: 27_io/basic_stringbuf/str/wchar_t/2.cc (test for excess errors)
WARNING: 27_io/basic_stringbuf/str/wchar_t/2.cc compilation failed to 
produce executable

Can you please have a look?

Thanks,
Paolo.