[4.7,trans-mem] Summary of unsolved known bugs

[Aldy Hernandez]

> * Stack save/restore not working? -> XFAIL testcases
> Related to this:
> ICE: verify_gimple failed: invalid rhs for gimple memory store with
> -fgnu-tm --param tm-max-aggregate-size=32
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51472

Proposed fix, waiting for review.

> [trans-mem] save/restore of thread-local data in nested txns is missing
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49581

Completely different than above.  Will take a look.

> * [trans-mem] problem with TM clone aliases
> Leads to add _ITM_getTMCloneOrIrrevocable in a __transaction_atomic.
> -> Fix proposed.
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51516

Proposed fix, waiting for a review.

> * ICE: in function_and_variable_visibility, at ipa.c:835 with -O
> -fgnu-tm and overriding virtual transaction_safe function
> -> Fix proposed.
> http://gcc.gnu.org/ml/gcc-patches/2011-12/msg01182.html
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51411

Fixed.

> * ICE: verify_flow_info failed: BB 3 can not throw but has an EH edge
> with -fgnu-tm -fnon-call-exceptions and transaction_callable
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51212

Will take a look.

> * ICE when lto1 does not have -fgnu-tm and object file uses TM
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51280

I believe I wasn't able to reproduce this.

> * AIX unexpected error_mark node in new TM tests
> -> Probably already fixed?
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51174

fixed on trunk.  Closed.

> Fixed but still open:
> * ICE: vector VEC(inline_summary_t,base) index domain error, in
> inline_summary at ipa-inline.h:193 with -O -fgnu-tm, transaction_safe
> and overloaded contructor
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51273

fixed, and closed

>
> * ICE: SIGSEGV in ix86_init_builtins (i386.c:27691) with -fgnu-tm and
> any fortran code
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51291

fixed and closed