[Bug tree-optimization/57359] store motion causes wrong code for union access at -O3
rguenth at gcc dot gnu.org
gcc-bugzilla@gcc.gnu.org
Tue Jan 8 13:55:00 GMT 2019
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=57359
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |alias
Last reconfirmed|2013-05-31 00:00:00 |2019-1-8
Summary|wrong code for union access |store motion causes wrong
|at -O3 on x86_64-linux |code for union access at
| |-O3
--- Comment #16 from Richard Biener <rguenth at gcc dot gnu.org> ---
Re-confirmed. Not really working on this - all other compilers make the same
"mistake". Cost of "fixing" is quite high (peeling one iteration).
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