2d25db047f
Cranelift only has one instruction SIMD which depends on SSE4.2 so this commit adds a lowering rule for `pcmpgtq` which doesn't use SSE4.2 and enables lowering the baseline requirement for SIMD support from SSE4.2 to SSE4.1. The `has_sse42` setting is no longer enabled by default for Cranelift. Additionally `enable_simd` no longer requires `has_sse42` on x64. Finally the fuzz-generator for Wasmtime codegen settings now enables flipping the `has_sse42` setting instead of unconditionally setting it to `true`. The specific lowering for `pcmpgtq` is copied from LLVM's lowering of this instruction.
This crate contains the core Cranelift code generator. It translates code from an intermediate representation into executable machine code.