Fix _mm256_round_pd, _mm256_round_ps, _mm_permute_pd and _mm256_permute_pd AVX
intrinsics to use "I" (ICE) markings.  Fix avxintrin.h to take them into 
account.
Part of rdar://10595450


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146791 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed