Auto merge of rust-lang#125016 - nicholasbishop:bishop-cb-112, r=comp…

…iler-errors

Update compiler_builtins to 0.1.112

The `weak-intrinsics` feature was removed from compiler_builtins in rust-lang/compiler-builtins#598, so dropped the `compiler-builtins-weak-intrinsics` feature from alloc/std/sysroot.

In rust-lang/compiler-builtins#593, some builtins for f16/f128 were added. These don't work for all compiler backends, so add a `compiler-builtins-no-f16-f128` feature and disable it for cranelift and gcc.

Cargo.lock

@@ -793,9 +793,9 @@ checksum = "55b672471b4e9f9e95499ea597ff64941a309b2cdbffcc46f2cc5e2d971fd335"
 
 [[package]]
 name = "compiler_builtins"
-version = "0.1.109"
+version = "0.1.112"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f11973008a8cf741fe6d22f339eba21fd0ca81e2760a769ba8243ed6c21edd7e"
+checksum = "b15acab2bb4fe4dad1f1e31f3d9e714f50ef561a0f87dd8a9da004f14d455e1a"
 dependencies = [
  "cc",
  "rustc-std-workspace-core",

compiler/rustc_codegen_cranelift/build_system/build_sysroot.rs

@@ -276,7 +276,7 @@ fn build_clif_sysroot_for_triple(
     if channel == "release" {
         build_cmd.arg("--release");
     }
-    build_cmd.arg("--features").arg("backtrace panic-unwind");
+    build_cmd.arg("--features").arg("backtrace panic-unwind compiler-builtins-no-f16-f128");
     build_cmd.env("CARGO_PROFILE_RELEASE_DEBUG", "true");
     build_cmd.env("__CARGO_DEFAULT_LIB_METADATA", "cg_clif");
     if compiler.triple.contains("apple") {

compiler/rustc_codegen_gcc/build_system/src/build.rs

@@ -112,7 +112,14 @@ pub fn build_sysroot(env: &HashMap<String, String>, config: &ConfigInfo) -> Resu
     }
     let mut env = env.clone();
 
-    let mut args: Vec<&dyn AsRef<OsStr>> = vec![&"cargo", &"build", &"--target", &config.target];
+    let mut args: Vec<&dyn AsRef<OsStr>> = vec![
+        &"cargo",
+        &"build",
+        &"--target",
+        &config.target,
+        &"--features",
+        &"compiler-builtins-no-f16-f128",
+    ];
 
     if config.no_default_features {
         rustflags.push_str(" -Csymbol-mangling-version=v0");

compiler/rustc_codegen_llvm/src/abi.rs

@@ -121,8 +121,10 @@ impl LlvmType for Reg {
         match self.kind {
             RegKind::Integer => cx.type_ix(self.size.bits()),
             RegKind::Float => match self.size.bits() {
+                16 => cx.type_f16(),
                 32 => cx.type_f32(),
                 64 => cx.type_f64(),
+                128 => cx.type_f128(),
                 _ => bug!("unsupported float: {:?}", self),
             },
             RegKind::Vector => cx.type_vector(cx.type_i8(), self.size.bytes()),

compiler/rustc_target/src/abi/call/mod.rs

@@ -236,8 +236,10 @@ impl Reg {
                 _ => panic!("unsupported integer: {self:?}"),
             },
             RegKind::Float => match self.size.bits() {
+                16 => dl.f16_align.abi,
                 32 => dl.f32_align.abi,
                 64 => dl.f64_align.abi,
+                128 => dl.f128_align.abi,
                 _ => panic!("unsupported float: {self:?}"),
             },
             RegKind::Vector => dl.vector_align(self.size).abi,

library/alloc/Cargo.toml

@@ -38,8 +38,8 @@ harness = false
 compiler-builtins-mem = ['compiler_builtins/mem']
 compiler-builtins-c = ["compiler_builtins/c"]
 compiler-builtins-no-asm = ["compiler_builtins/no-asm"]
+compiler-builtins-no-f16-f128 = ["compiler_builtins/no-f16-f128"]
 compiler-builtins-mangled-names = ["compiler_builtins/mangled-names"]
-compiler-builtins-weak-intrinsics = ["compiler_builtins/weak-intrinsics"]
 # Make panics and failed asserts immediately abort without formatting any message
 panic_immediate_abort = ["core/panic_immediate_abort"]
 # Choose algorithms that are optimized for binary size instead of runtime performance

library/std/Cargo.toml

@@ -17,7 +17,7 @@ cfg-if = { version = "1.0", features = ['rustc-dep-of-std'] }
 panic_unwind = { path = "../panic_unwind", optional = true }
 panic_abort = { path = "../panic_abort" }
 core = { path = "../core", public = true }
-compiler_builtins = { version = "0.1.105" }
+compiler_builtins = { version = "0.1.112" }
 profiler_builtins = { path = "../profiler_builtins", optional = true }
 unwind = { path = "../unwind" }
 hashbrown = { version = "0.14", default-features = false, features = ['rustc-dep-of-std'] }
@@ -71,8 +71,8 @@ profiler = ["profiler_builtins"]
 compiler-builtins-c = ["alloc/compiler-builtins-c"]
 compiler-builtins-mem = ["alloc/compiler-builtins-mem"]
 compiler-builtins-no-asm = ["alloc/compiler-builtins-no-asm"]
+compiler-builtins-no-f16-f128 = ["alloc/compiler-builtins-no-f16-f128"]
 compiler-builtins-mangled-names = ["alloc/compiler-builtins-mangled-names"]
-compiler-builtins-weak-intrinsics = ["alloc/compiler-builtins-weak-intrinsics"]
 llvm-libunwind = ["unwind/llvm-libunwind"]
 system-llvm-libunwind = ["unwind/system-llvm-libunwind"]
 

library/sysroot/Cargo.toml

@@ -16,8 +16,8 @@ backtrace = ["std/backtrace"]
 compiler-builtins-c = ["std/compiler-builtins-c"]
 compiler-builtins-mem = ["std/compiler-builtins-mem"]
 compiler-builtins-no-asm = ["std/compiler-builtins-no-asm"]
+compiler-builtins-no-f16-f128 = ["std/compiler-builtins-no-f16-f128"]
 compiler-builtins-mangled-names = ["std/compiler-builtins-mangled-names"]
-compiler-builtins-weak-intrinsics = ["std/compiler-builtins-weak-intrinsics"]
 llvm-libunwind = ["std/llvm-libunwind"]
 system-llvm-libunwind = ["std/system-llvm-libunwind"]
 panic-unwind = ["std/panic_unwind"]