Craig Topper 98a9628b09 [TableGen] Teach tablegen to allow SDNPCommutable nodes with more than 2 operands.
Summary:
Tablegen already supports commutable instrinsics with more than 2 operands. There it just assumes the first two operands are commutable.

I plan to use this to improve the generation of FMA patterns in the X86 backend.

Reviewers: aymanmus, zvi, RKSimon, spatel, arsenm

Reviewed By: arsenm

Subscribers: arsenm, llvm-commits

Differential Revision: https://reviews.llvm.org/D37430

llvm-svn: 312464
2017-09-04 03:44:33 +00:00
..
2017-07-30 20:12:17 +00:00
2016-04-18 09:17:29 +00:00