RISC-V does not have a flags register, and thus no add-with-carry
instructions. Neither does MIPS.
Add expansions of these instructions in terms of iadd and icmp.
The make_inst_results() method now understands direct and indirect
calls, and can allocate result values matching the return types of the
function call.
These two tables are used to keep track of type signatures of function
calls as well as external function references used in direct function
calls.
Also add an ExtFuncData struct representing an external function that
can be called directly.
Use this source map method for assigning a location to any entity whose
source number is not exposed. This could be
- Instructions.
- Signatures defined implicitly by function decls.
These entities only appear in the location map, not the entity number
maps.
Give these crates each a more standard directory layout with sources in
a 'src' sub-sirectory and Cargo.toml in the top lib/foo directory.
Add license and description fields to each.
The build script for the cretonne crate now lives in
'lib/cretonne/build.rs' separating it from the normal library sources
under 'lib/cretonne/src'.
The 'lib/cretonne' directory will be the new root of a stand-alone
cretonne crate containg both Python and Rust sources.
This is in preparation for publishing crates on crates.io.
