Michael Jones 148a4b240e [libc] change ASAN condition to generator expression
Previously, building LLVM-libc with GWP ASAN was conditioned on the flag
COMPILER_RT_BUILD_GWP_ASAN, which caused issues do to the default value
of the flag being set in the compiler-rt cmake, which is seperate. Now
GWP ASAN is included based on if it exists as a target, which is more
consistent.

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D119789
2022-02-15 16:12:12 -08:00
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