Originally, a few tests fail for armhf target due to:
- COMPILER_RT_ARMHF_TARGET was not set when building the lib
- COMPILER_RT_ABI should not be defined as __attribute__((pcs("aapcs"))) for armhf when building for both lib and tests
This address https://bugs.llvm.org//show_bug.cgi?id=32261
mulsc3_test.c is a newly exposed issue, which will be addressed separately.