libsanitizer merge from upstream r175733

Jakub Jelinek
Thu Feb 21 10:39:00 GMT 2013

On Thu, Feb 21, 2013 at 02:16:19PM +0400, Konstantin Serebryany wrote:
> The attached patch is the libsanitizer merge from upstream r175042.
> A few changes. Among other things:
> - a second attempt to change the shadow offset to 0x7fff8000 (~5%
> speedup).  x86_64-linux-only

I've been applying that i386.c change + asan_mapping.h and
changes in our tree for a few days, and it looks good on all platforms
where asan is supported (i686, x86_64, ppc, ppc64).

> - asan_init is now called from preinit_array (linux only)
> Patch for libsanitizer is automatically generated by libsanitizer/
> Tested with
> rm -rf */{*/,}libsanitizer \
>   && make -j 50 \
>   && make -C gcc check-g{cc,++}
> RUNTESTFLAGS='--target_board=unix\{-m32,-m64\} asan.exp'
> Our internal LLVM bots (Linux, Mac and Android) are green.
> Ok to commit?

Yes, thanks.


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