By default, ASan generates an asan.module_ctor function that initializes asan and
registers the globals in the module. This function is added to the
@llvm.global_ctors array. Previously, there was no way to control the
generation of this function.
This patch adds a way to control the generation of this function. The
flag -asan-constructor-kind has two options:
global: This is the default option and the default behavior of ASan. It generates an
asan.module_ctor function.
none: This skips the generation of the asan.module_ctor function.
rdar://104448572
Differential revision: https://reviews.llvm.org/D142505
2b02df7819