forked from OSchip/llvm-project
20d34eacf3
Using noexcept multilib with -fno-exceptions can lead to significant space savings when statically linking libc++abi because we don't need all the unwinding and demangling code. When compiling with ASan, we already get a lot of overhead from the instrumentation itself, when statically linking libc++abi, that overhead is even larger. Having the noexcept variant for ASan can help significantly, we've seen more than 50% size reduction in our system image, which offsets the cost of having to build another multilib. Differential Revision: https://reviews.llvm.org/D64140 llvm-svn: 365994 |
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