optimization_options in i386.c has
/* For -O2 and beyond, turn on -fzee for x86_64 target. */
if (level > 1 && TARGET_64BIT)
flag_zee = 1;
But TARGET_64BIT is set/clear later in override_options. As
the result, flag_zee may be set incorrectly for -m32/-m64.
--
Summary: -fzee is mishandled
Product: gcc
Version: 4.6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: hjl dot tools at gmail dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44319