[PATCH] Add support for -fno-sanitize-recover and -fsanitize-undefined-trap-on-error (PR sanitizer/60275)

[Marek Polacek]

On Thu, May 15, 2014 at 11:39:26AM +0100, Ramana Radhakrishnan wrote:
> What's the overhead with bootstrap-ubsan ?

I timed normal bootstrap and bootstrap-ubsan on x86_64, 24 cores,
Intel(R) Xeon(R) CPU X5670  @ 2.93GHz (aka cfarm 20) and the results:

--enable-languages=all

real	35m10.419s
user	204m5.613s
sys	6m15.615s

--enable-languages=all --with-build-config=bootstrap-ubsan

real	71m39.338s
user	347m53.409s
sys	7m44.281s

	Marek