[PATCH] D33596: [globalisel][tablegen] Add support for EXTRACT_SUBREG.

[Daniel Sanders via Phabricator via llvm-commits]

dsanders added a comment.

After re-testing this on current trunk, there's a bug in X86 due to GR64 not fully supporting the 8bit subregister index. I'll fix this shortly using failedImport() for this case since we don't have multi-insn emission quite yet. The following patches introduce the infrastructure for it.


https://reviews.llvm.org/D33596