The big change here is the old backend is no longer in cranelift. This is good news and actually simplifies lucet a bunch! We no longer have to test the old backend in CI, or differentially fuzz against it.
The release was almost perfect, except the ifcmp_sp instruction that was dead code from the old backend is still required for lucet trampolines. So, @cfallin graciously added that back in, and we are using a [patch.'crates.io'] directive in Cargo.toml to get that fix.
Wasmtime 0.31 and cranelift 0.78 is out :tada:
The big change here is the old backend is no longer in cranelift. This is good news and actually simplifies lucet a bunch! We no longer have to test the old backend in CI, or differentially fuzz against it.
The release was almost perfect, except the
ifcmp_spinstruction that was dead code from the old backend is still required for lucet trampolines. So, @cfallin graciously added that back in, and we are using a[patch.'crates.io']directive inCargo.tomlto get that fix.