As part of the effort to improve AIX support, regression test coverage
misses quite a lot for AIX subtarget. This patch adds AIX triple to
those don't need extra change, and we can cover more cases in following
commits.
Reviewed By: steven.zhang
Differential Revision: https://reviews.llvm.org/D94159
Instruction darn was introduced in ISA 3.0. It means 'Deliver A Random
Number'. The immediate number L means:
- L=0, the number is 32-bit (higher 32-bits are all-zero)
- L=1, the number is 'conditioned' (processed by hardware to reduce bias)
- L=2, the number is not conditioned, directly from noise source
GCC implements them in three separate intrinsics: __builtin_darn,
__builtin_darn_32 and __builtin_darn_raw. This patch implements the
same intrinsics. And this change also addresses Bugzilla PR39800.
Reviewed By: steven.zhang
Differential Revision: https://reviews.llvm.org/D92465
Qiu Chaofan