[trans-mem] re-add tcb-block optimization for x86-glibc

[Richard Henderson]

Glibc reserved 5 slots in the TCB for use by TM.  There was code to
make use of these which was mysteriously lost during the rewrite of
the libitm library into C++.


r~


libitm/
	* config/x86/tls.h: New file.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: tls.h
Type: text/x-chdr
Size: 3109 bytes
Desc: not available
URL: <http://gcc.gnu.org/pipermail/gcc-patches/attachments/20101214/934480f5/attachment.bin>