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[Bug tree-optimization/64567] missed optimization: redundant test before clearing bit(s)
- From: "schwab at linux-m68k dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Mon, 12 Jan 2015 13:26:20 +0000
- Subject: [Bug tree-optimization/64567] missed optimization: redundant test before clearing bit(s)
- Auto-submitted: auto-generated
- References: <bug-64567-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64567
--- Comment #1 from Andreas Schwab <schwab@linux-m68k.org> ---
This transformation is incorrect if the lvalue may be pointing to a read-only
object.