Reviewers: jmolloy, t.p.northover Reviewed By: t.p.northover Subscribers: t.p.northover, aemerson, rengolin, llvm-commits Differential Revision: https://reviews.llvm.org/D30097 llvm-svn: 295478
The CMPZ #0 disappears during peepholing, leaving just a tADDi3, tADDi8 or t2ADDri. This avoids having to materialize the expensive negative constant in Thumb-1, and allows a shrinking from a 32-bit CMN to a 16-bit ADDS in Thumb-2. llvm-svn: 281040
Artyom Skrobov