f2f7706265
This patch implements the required but not already available x64 instructions for copysign as well as the actual lowering sequence and tests for the newly implemented x64 instructions. Those instructions include: andps, andnps, movaps, movd, orps, The lowering sequence is based on the lowering for f32.copysign in the current cranelift backend. movd does not have a test yet due to some logic needed express a 32-bit register as a source for xmm_rm_r instructions. This code also begins some rethinking/refactoring of how the sse move instuctions are written and so also includes new emit cases that will replace current ones that match a different enum used to describe sse moves.
This crate contains the core Cranelift code generator. It translates code from an intermediate representation into executable machine code.