[PATCH] PR51280 LTO/trans-mem ICE with TM builtins

[Patrick Marlier]

In PR51280, LTO does ICE because the object file uses TM builtin but the 
TM is not enabled.
In the patch, it displays a error message if the builtin is not defined 
and due to TM.
I moved is_tm_builtin() from calls.c to trans-mem.c. I splitted it into 
2 functions is_tm_builtin/is_tm_builtin_code. In is_tm_builtin_code, I 
added some missing builtins (TM_START, TM_GETTMCLONE_SAFE, TM_MALLOC, 
TM_CALLOC, TM_FREE). Finally, I declared them into tree.h to be usable 
in calls.c and tree-streamer-in.c.

Bootstrapped and LTO/TM regtested on Linux/i686.
(If ok, please commit it. Thanks.)

Patrick Marlier.

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