[clang] [WIP][AMDGPU] Support for type inferring image load/store builtins for AMDGPU (PR #140210)

[via cfe-commits]

b-sumner wrote:

If the idea here is to remove the need for https://github.com/ROCm/llvm-project/blob/amd-staging/amd/device-libs/ockl/src/base-image-intrinsics.ll and https://github.com/ROCm/llvm-project/blob/amd-staging/amd/device-libs/ockl/src/extended-image-intrinsics.ll then we do need the +extended-image-insts target feature attribute as indicated in those files.

https://github.com/llvm/llvm-project/pull/140210