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[Bug ipa/78535] [6.2] invalid code generation with -O1 -fdevirtualize
- From: "daniel.f.starke at freenet dot de" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Fri, 25 Nov 2016 23:15:32 +0000
- Subject: [Bug ipa/78535] [6.2] invalid code generation with -O1 -fdevirtualize
- Auto-submitted: auto-generated
- References: <bug-78535-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78535
--- Comment #1 from Daniel Starke <daniel.f.starke at freenet dot de> ---
Comparing the outputs created with -fdump-tree-all enabled for both tested
command-line combinations hints that -flto -fdevirtualize fails when one of the
following passes is enabled via -O1:
- nothrow
- early_optimizations
- objsz1
- ccp1
- forwprop1
- esra
- ealias
- fre1
- mergephi1
- dse1
- cddce1
- local-pure-const1