[PATCH] [compiler-rt] Remove -fomit-frame-pointer from sanitizers CFLAGS

[Dmitry Vyukov]

What is the performance impact on tsan?
Does it add any frame pointers to __tsan_read/write/func_entry/exit functions?
If yes, please add explicit -fomit-frame-pointer to tsan runtime.

http://reviews.llvm.org/D4305