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[Bug tree-optimization/81165] [8 Regression] Regression in GCC-8.0.0's optimizer
- From: "aoliva at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Sat, 02 Dec 2017 00:59:05 +0000
- Subject: [Bug tree-optimization/81165] [8 Regression] Regression in GCC-8.0.0's optimizer
- Auto-submitted: auto-generated
- References: <bug-81165-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81165
--- Comment #7 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
it may very well be the case that it is gcc7 that's buggy in optimizing out the
loop. after all, there is a divide-by-x0 in the loop entry test and, save for
global optimizations, the compiler couldn't tell x0 was nonzero. looking into
it...