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Several tree-ssa issues


The tree-ssa branch seems to have improved recently, however I still note
several problems:

1) Who might be interested in
     internal compiler error: in gimplify_expr, at gimplify.c:662
happening in proprietary source? (I cannot publish that in Bugzilla but
will happily provide it by private mail.)


2) /sw/gcc-current/bin/../lib/gcc/i386-unknown-freebsd4.8/3.5-tree-ssa/../../../../include/c++/3.5-tree-ssa/i386-unknown-freebsd4.8/bits/
atomicity.h:50: warning: '__tmp' might be used uninitialized in this function

(Given that atomicity.h is a GCC header, we should not warn; either the
header or GCC should be fixed.)


3) Finally, why does -O3 consume 118s and 600+MB for the testcase in
PR8361, whereas GCC 3.2.3 only consumes 72s 110MB?

Gerald


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