[NVPTX] Make tensor shape part of WMMA intrinsic's name.

This is needed for the upcoming implementation of the
new 8x32x16 and 32x8x16 variants of WMMA instructions
introduced in CUDA 9.1.

Differential Revision: https://reviews.llvm.org/D44719

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@328158 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed