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[Bug rtl-optimization/52714] [4.7/4.8/4.9 regression] ICE in fixup_reorder_chain, at cfglayout.c:880
- From: "law at redhat dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Thu, 06 Feb 2014 21:52:30 +0000
- Subject: [Bug rtl-optimization/52714] [4.7/4.8/4.9 regression] ICE in fixup_reorder_chain, at cfglayout.c:880
- Auto-submitted: auto-generated
- References: <bug-52714-4 at http dot gcc dot gnu dot org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52714
--- Comment #13 from Jeffrey A. Law <law at redhat dot com> ---
BTW, compiling with -O2 rather than -O1 makes this problem go away.
The problematical sequence (testing that the result of an alloca call is
nonzero) is eliminated by the VRP optimizers which only run at -O2 and above.