Experiment: See if f16 works on MIPS

Author: Martin Nordholts

library/Cargo.lock

@@ -62,8 +62,7 @@ dependencies = [
 [[package]]
 name = "compiler_builtins"
 version = "0.1.146"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a97117b1434b79833f39a5fabdf82f890bd98c1988334dea1cb67f7e627fa311"
+source = "git+https://github.com/martn3/compiler-builtins.git?branch=f16-mips#b15a085cf1ca4b8e9d31b56dd564bb8954306ae5"
 dependencies = [
  "cc",
  "rustc-std-workspace-core",

library/Cargo.toml

@@ -41,6 +41,7 @@ object.debug = 0
 rustc-demangle.debug = 0
 
 [patch.crates-io]
+compiler_builtins = { git = 'https://github.com/martn3/compiler-builtins.git', branch = "f16-mips" }
 # See comments in `library/rustc-std-workspace-core/README.md` for what's going on
 # here
 rustc-std-workspace-core = { path = 'rustc-std-workspace-core' }

library/std/build.rs

@@ -107,7 +107,6 @@ fn main() {
         ("csky", _) => false,
         ("hexagon", _) => false,
         ("loongarch64", _) => false,
-        ("mips" | "mips64" | "mips32r6" | "mips64r6", _) => false,
         ("powerpc" | "powerpc64", _) => false,
         ("sparc" | "sparc64", _) => false,
         ("wasm32" | "wasm64", _) => false,