Spec CPU 2006 (C/C++)

These numbers are measured on Spec CPU 2006 (C/C++ only) using AddressSanitizer r496 with malloc_context_size=1 (i.e. no unwinding).

The baseline is clang -O2.
The average slowdown introduced by full instrumentation (red) is 1.73.
When only writes are instrumented (blue), the average slowdown is 1.26.