Auto merge of #141557 - bjorn3:sync_cg_clif-2025-05-25, r=bjorn3

Subtree sync for rustc_codegen_cranelift

The main highlights this time are a Cranelift update and (thanks for beetrees) f16/f128 support.

r? `@ghost`

`@rustbot` label +A-codegen +A-cranelift +T-compiler

Author: bors

compiler/rustc_codegen_cranelift/.github/workflows/main.yml

@@ -34,9 +34,9 @@ jobs:
     - name: Rustfmt
       run: |
         cargo fmt --check
-        rustfmt --check build_system/main.rs
-        rustfmt --check example/*
-        rustfmt --check scripts/*.rs
+        rustfmt --check --edition 2024 build_system/main.rs
+        rustfmt --check --edition 2024 example/*
+        rustfmt --check --edition 2024 scripts/*.rs
 
 
   test:

compiler/rustc_codegen_cranelift/Cargo.lock

@@ -43,39 +43,42 @@ checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
 [[package]]
 name = "cranelift-assembler-x64"
-version = "0.118.0"
+version = "0.120.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3e4b56ebe316895d3fa37775d0a87b0c889cc933f5c8b253dbcc7c7bcb7fe7e4"
+checksum = "9ff8e35182c7372df00447cb90a04e584e032c42b9b9b6e8c50ddaaf0d7900d5"
 dependencies = [
  "cranelift-assembler-x64-meta",
 ]
 
 [[package]]
 name = "cranelift-assembler-x64-meta"
-version = "0.118.0"
+version = "0.120.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "95cabbc01dfbd7dcd6c329ca44f0212910309c221797ac736a67a5bc8857fe1b"
+checksum = "14220f9c2698015c3b94dc6b84ae045c1c45509ddc406e43c6139252757fdb7a"
+dependencies = [
+ "cranelift-srcgen",
+]
 
 [[package]]
 name = "cranelift-bforest"
-version = "0.118.0"
+version = "0.120.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "76ffe46df300a45f1dc6f609dc808ce963f0e3a2e971682c479a2d13e3b9b8ef"
+checksum = "d372ef2777ceefd75829e1390211ac240e9196bc60699218f7ea2419038288ee"
 dependencies = [
  "cranelift-entity",
 ]
 
 [[package]]
 name = "cranelift-bitset"
-version = "0.118.0"
+version = "0.120.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b265bed7c51e1921fdae6419791d31af77d33662ee56d7b0fa0704dc8d231cab"
+checksum = "56323783e423818fa89ce8078e90a3913d2a6e0810399bfce8ebd7ee87baa81f"
 
 [[package]]
 name = "cranelift-codegen"
-version = "0.118.0"
+version = "0.120.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e606230a7e3a6897d603761baee0d19f88d077f17b996bb5089488a29ae96e41"
+checksum = "74ffb780aab6186c6e9ba26519654b1ac55a09c0a866f6088a4efbbd84da68ed"
 dependencies = [
  "bumpalo",
  "cranelift-assembler-x64",
@@ -98,43 +101,44 @@ dependencies = [
 
 [[package]]
 name = "cranelift-codegen-meta"
-version = "0.118.0"
+version = "0.120.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8a63bffafc23bc60969ad528e138788495999d935f0adcfd6543cb151ca8637d"
+checksum = "c23ef13814d3b39c869650d5961128cbbecad83fbdff4e6836a03ecf6862d7ed"
 dependencies = [
- "cranelift-assembler-x64",
+ "cranelift-assembler-x64-meta",
  "cranelift-codegen-shared",
+ "cranelift-srcgen",
 ]
 
 [[package]]
 name = "cranelift-codegen-shared"
-version = "0.118.0"
+version = "0.120.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "af50281b67324b58e843170a6a5943cf6d387c06f7eeacc9f5696e4ab7ae7d7e"
+checksum = "b9f623300657679f847803ce80811454bfff89cea4f6bf684be5c468d4a73631"
 
 [[package]]
 name = "cranelift-control"
-version = "0.118.0"
+version = "0.120.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8c20c1b38d1abfbcebb0032e497e71156c0e3b8dcb3f0a92b9863b7bcaec290c"
+checksum = "31f4168af69989aa6b91fab46799ed4df6096f3209f4a6c8fb4358f49c60188f"
 dependencies = [
  "arbitrary",
 ]
 
 [[package]]
 name = "cranelift-entity"
-version = "0.118.0"
+version = "0.120.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0c2c67d95507c51b4a1ff3f3555fe4bfec36b9e13c1b684ccc602736f5d5f4a2"
+checksum = "ca6fa9bae1c8de26d71ac2162f069447610fd91e7780cb480ee0d76ac81eabb8"
 dependencies = [
  "cranelift-bitset",
 ]
 
 [[package]]
 name = "cranelift-frontend"
-version = "0.118.0"
+version = "0.120.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4e002691cc69c38b54fc7ec93e5be5b744f627d027031d991cc845d1d512d0ce"
+checksum = "b8219205608aa0b0e6769b580284a7e055c7e0c323c1041cde7ca078add3e412"
 dependencies = [
  "cranelift-codegen",
  "log",
@@ -144,15 +148,15 @@ dependencies = [
 
 [[package]]
 name = "cranelift-isle"
-version = "0.118.0"
+version = "0.120.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e93588ed1796cbcb0e2ad160403509e2c5d330d80dd6e0014ac6774c7ebac496"
+checksum = "588d0c5964f10860b04043e55aab26d7f7a206b0fd4f10c5260e8aa5773832bd"
 
 [[package]]
 name = "cranelift-jit"
-version = "0.118.0"
+version = "0.120.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "17f6682f0b193d6b7873cc8e7ed67e8776a8a26f50eeabf88534e9be618b9a03"
+checksum = "56bd917ddc524f84f4066f954062875bdfc0dffea068ee94e906d98de5ac7c33"
 dependencies = [
  "anyhow",
  "cranelift-codegen",
@@ -170,9 +174,9 @@ dependencies = [
 
 [[package]]
 name = "cranelift-module"
-version = "0.118.0"
+version = "0.120.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ff19784c6de05116e63e6a34791012bd927b2a4eac56233039c46f1b6a4edac8"
+checksum = "68a03c057d8a992e06596c871341e446af43ff9224f941e5b8adea39137a5391"
 dependencies = [
  "anyhow",
  "cranelift-codegen",
@@ -181,9 +185,9 @@ dependencies = [
 
 [[package]]
 name = "cranelift-native"
-version = "0.118.0"
+version = "0.120.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e5b09bdd6407bf5d89661b80cf926ce731c9e8cc184bf49102267a2369a8358e"
+checksum = "19ed3c94cb97b14f92b6a94a1d45ef8c851f6a2ad9114e5d91d233f7da638fed"
 dependencies = [
  "cranelift-codegen",
  "libc",
@@ -192,9 +196,9 @@ dependencies = [
 
 [[package]]
 name = "cranelift-object"
-version = "0.118.0"
+version = "0.120.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "685e8661a30d1cb69509f589ac643adeee79c5f63c0da316431b9fad29e6d3b4"
+checksum = "a64dacef362a69375a604f6636e5e9a174fb96dba3b273646fcd9fa85c1d0997"
 dependencies = [
  "anyhow",
  "cranelift-codegen",
@@ -205,6 +209,12 @@ dependencies = [
  "target-lexicon",
 ]
 
+[[package]]
+name = "cranelift-srcgen"
+version = "0.120.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "85256fac1519a7d25a040c1d850fba67478f3f021ad5fdf738ba4425ee862dbf"
+
 [[package]]
 name = "crc32fast"
 version = "1.4.2"
@@ -331,9 +341,9 @@ dependencies = [
 
 [[package]]
 name = "regalloc2"
-version = "0.11.1"
+version = "0.12.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "145c1c267e14f20fb0f88aa76a1c5ffec42d592c1d28b3cd9148ae35916158d3"
+checksum = "5216b1837de2149f8bc8e6d5f88a9326b63b8c836ed58ce4a0a29ec736a59734"
 dependencies = [
  "allocator-api2",
  "bumpalo",
@@ -436,9 +446,9 @@ checksum = "adb9e6ca4f869e1180728b7950e35922a7fc6397f7b641499e8f3ef06e50dc83"
 
 [[package]]
 name = "wasmtime-jit-icache-coherence"
-version = "31.0.0"
+version = "33.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a54f6c6c7e9d7eeee32dfcc10db7f29d505ee7dd28d00593ea241d5f70698e64"
+checksum = "175e924dbc944c185808466d1e90b5a7feb610f3b9abdfe26f8ee25fd1086d1c"
 dependencies = [
  "anyhow",
  "cfg-if",

compiler/rustc_codegen_cranelift/Cargo.toml

@@ -8,12 +8,12 @@ crate-type = ["dylib"]
 
 [dependencies]
 # These have to be in sync with each other
-cranelift-codegen = { version = "0.118.0", default-features = false, features = ["std", "timing", "unwind", "all-native-arch"] }
-cranelift-frontend = { version = "0.118.0" }
-cranelift-module = { version = "0.118.0" }
-cranelift-native = { version = "0.118.0" }
-cranelift-jit = { version = "0.118.0", optional = true }
-cranelift-object = { version = "0.118.0" }
+cranelift-codegen = { version = "0.120.0", default-features = false, features = ["std", "timing", "unwind", "all-native-arch"] }
+cranelift-frontend = { version = "0.120.0" }
+cranelift-module = { version = "0.120.0" }
+cranelift-native = { version = "0.120.0" }
+cranelift-jit = { version = "0.120.0", optional = true }
+cranelift-object = { version = "0.120.0" }
 target-lexicon = "0.13"
 gimli = { version = "0.31", default-features = false, features = ["write"] }
 object = { version = "0.36", default-features = false, features = ["std", "read_core", "write", "archive", "coff", "elf", "macho", "pe"] }
@@ -24,12 +24,12 @@ smallvec = "1.8.1"
 
 [patch.crates-io]
 # Uncomment to use an unreleased version of cranelift
-#cranelift-codegen = { git = "https://github.com/bytecodealliance/wasmtime.git", branch = "release-31.0.0", version = "0.118.0" }
-#cranelift-frontend = { git = "https://github.com/bytecodealliance/wasmtime.git", branch = "release-31.0.0", version = "0.118.0" }
-#cranelift-module = { git = "https://github.com/bytecodealliance/wasmtime.git", branch = "release-31.0.0", version = "0.118.0" }
-#cranelift-native = { git = "https://github.com/bytecodealliance/wasmtime.git", branch = "release-31.0.0", version = "0.118.0" }
-#cranelift-jit = { git = "https://github.com/bytecodealliance/wasmtime.git", branch = "release-31.0.0", version = "0.118.0" }
-#cranelift-object = { git = "https://github.com/bytecodealliance/wasmtime.git", branch = "release-31.0.0", version = "0.118.0" }
+#cranelift-codegen = { git = "https://github.com/bytecodealliance/wasmtime.git", branch = "release-33.0.0", version = "0.120.0" }
+#cranelift-frontend = { git = "https://github.com/bytecodealliance/wasmtime.git", branch = "release-33.0.0", version = "0.120.0" }
+#cranelift-module = { git = "https://github.com/bytecodealliance/wasmtime.git", branch = "release-33.0.0", version = "0.120.0" }
+#cranelift-native = { git = "https://github.com/bytecodealliance/wasmtime.git", branch = "release-33.0.0", version = "0.120.0" }
+#cranelift-jit = { git = "https://github.com/bytecodealliance/wasmtime.git", branch = "release-33.0.0", version = "0.120.0" }
+#cranelift-object = { git = "https://github.com/bytecodealliance/wasmtime.git", branch = "release-33.0.0", version = "0.120.0" }
 
 # Uncomment to use local checkout of cranelift
 #cranelift-codegen = { path = "../wasmtime/cranelift/codegen" }

compiler/rustc_codegen_cranelift/Readme.md

@@ -7,7 +7,7 @@ If not please open an issue.
 
 ## Download using Rustup
 
-The Cranelift codegen backend is distributed in nightly builds on Linux and x86_64 macOS. If you want to
+The Cranelift codegen backend is distributed in nightly builds on Linux, macOS and x86_64 Windows. If you want to
 install it using Rustup, you can do that by running:
 
 ```bash
@@ -79,7 +79,7 @@ For more docs on how to build and test see [build_system/usage.txt](build_system
 Not all targets are available as rustup component for nightly. See notes in the platform support matrix.
 
 [^xcoff]: XCOFF object file format is not supported.
-[^no-rustup]: Not available as rustup component for nightly. You can build it yourself.
+[^no-rustup]: Not available as [rustup component for nightly](https://rust-lang.github.io/rustup-components-history/). You can build it yourself.
 
 ## Usage
 

compiler/rustc_codegen_cranelift/build_system/build_backend.rs

@@ -18,7 +18,7 @@ pub(crate) fn build_backend(
     let mut cmd = CG_CLIF.build(&bootstrap_host_compiler, dirs);
 
     let mut rustflags = rustflags_from_env("RUSTFLAGS");
-    rustflags.push("-Zallow-features=rustc_private".to_owned());
+    rustflags.push("-Zallow-features=rustc_private,f16,f128".to_owned());
     rustflags_to_cmd_env(&mut cmd, "RUSTFLAGS", &rustflags);
 
     if env::var("CG_CLIF_EXPENSIVE_CHECKS").is_ok() {

compiler/rustc_codegen_cranelift/build_system/build_sysroot.rs

@@ -168,7 +168,8 @@ fn build_llvm_sysroot_for_triple(compiler: Compiler) -> SysrootTarget {
         let file_name_str = file.file_name().unwrap().to_str().unwrap();
         if (file_name_str.contains("rustc_")
             && !file_name_str.contains("rustc_std_workspace_")
-            && !file_name_str.contains("rustc_demangle"))
+            && !file_name_str.contains("rustc_demangle")
+            && !file_name_str.contains("rustc_literal_escaper"))
             || file_name_str.contains("chalk")
             || file_name_str.contains("tracing")
             || file_name_str.contains("regex")
@@ -234,7 +235,7 @@ fn build_clif_sysroot_for_triple(
     compiler.rustflags.extend(rustflags);
     let mut build_cmd = STANDARD_LIBRARY.build(&compiler, dirs);
     build_cmd.arg("--release");
-    build_cmd.arg("--features").arg("backtrace panic-unwind compiler-builtins-no-f16-f128");
+    build_cmd.arg("--features").arg("backtrace panic-unwind");
     build_cmd.arg(format!("-Zroot-dir={}", STDLIB_SRC.to_path(dirs).display()));
     build_cmd.env("CARGO_PROFILE_RELEASE_DEBUG", "true");
     build_cmd.env("__CARGO_DEFAULT_LIB_METADATA", "cg_clif");

compiler/rustc_codegen_cranelift/docs/usage.md

@@ -47,7 +47,7 @@ These are a few functions that allow you to easily run rust code from the shell
 
 ```bash
 function jit_naked() {
-    echo "$@" | $cg_clif_dir/dist/rustc-clif - -Zunstable-options -Cllvm-args=jit-mode-Cprefer-dynamic
+    echo "$@" | $cg_clif_dir/dist/rustc-clif - -Zunstable-options -Cllvm-args=jit-mode -Cprefer-dynamic
 }
 
 function jit() {

compiler/rustc_codegen_cranelift/example/mini_core.rs

@@ -521,10 +521,28 @@ fn panic_cannot_unwind() -> ! {
 }
 
 #[lang = "eh_personality"]
-fn eh_personality() -> ! {
+// FIXME personality signature depends on target
+fn eh_personality(
+    _version: i32,
+    _actions: i32,
+    _exception_class: u64,
+    _exception_object: *mut (),
+    _context: *mut (),
+) -> i32 {
     loop {}
 }
 
+#[lang = "panic_in_cleanup"]
+fn panic_in_cleanup() -> ! {
+    loop {}
+}
+
+#[cfg(all(unix, not(target_vendor = "apple")))]
+#[link(name = "gcc_s")]
+extern "C" {
+    fn _Unwind_Resume(exc: *mut ()) -> !;
+}
+
 #[lang = "drop_in_place"]
 #[allow(unconditional_recursion)]
 pub unsafe fn drop_in_place<T: ?Sized>(to_drop: *mut T) {

compiler/rustc_codegen_cranelift/example/std_example.rs

@@ -166,6 +166,7 @@ fn main() {
         enum Never {}
     }
 
+    #[cfg(not(target_arch = "s390x"))] // s390x doesn't have vector instructions enabled by default
     foo(I64X2([0, 0]));
 
     transmute_wide_pointer();
@@ -203,9 +204,11 @@ fn rust_call_abi() {
     rust_call_abi_callee((1, 2));
 }
 
+#[cfg_attr(target_arch = "s390x", allow(dead_code))]
 #[repr(simd)]
 struct I64X2([i64; 2]);
 
+#[cfg_attr(target_arch = "s390x", allow(dead_code))]
 #[allow(improper_ctypes_definitions)]
 extern "C" fn foo(_a: I64X2) {}
 

compiler/rustc_codegen_cranelift/patches/0027-stdlib-128bit-atomic-operations.patch

@@ -37,6 +37,15 @@ diff --git a/library/core/src/sync/atomic.rs b/library/core/src/sync/atomic.rs
 index bf2b6d59f88..d5ccce03bbf 100644
 --- a/library/core/src/sync/atomic.rs
 +++ b/library/core/src/sync/atomic.rs
+@@ -300,8 +300,6 @@ impl_atomic_primitive!(AtomicI32(i32), size("32"), align(4));
+ impl_atomic_primitive!(AtomicU32(u32), size("32"), align(4));
+ impl_atomic_primitive!(AtomicI64(i64), size("64"), align(8));
+ impl_atomic_primitive!(AtomicU64(u64), size("64"), align(8));
+-impl_atomic_primitive!(AtomicI128(i128), size("128"), align(16));
+-impl_atomic_primitive!(AtomicU128(u128), size("128"), align(16));
+ 
+ #[cfg(target_pointer_width = "16")]
+ impl_atomic_primitive!(AtomicIsize(isize), size("ptr"), align(2));
 @@ -3585,44 +3585,6 @@ pub const fn as_ptr(&self) -> *mut $int_type {
      8,
      u64 AtomicU64

compiler/rustc_codegen_cranelift/rust-toolchain

@@ -1,4 +1,4 @@
 [toolchain]
-channel = "nightly-2025-03-30"
+channel = "nightly-2025-05-25"
 components = ["rust-src", "rustc-dev", "llvm-tools"]
 profile = "minimal"

compiler/rustc_codegen_cranelift/scripts/setup_rust_fork.sh

@@ -43,7 +43,7 @@ verbose-tests = false
 # disabled bootstrap will crash trying to copy llvm tools for the bootstrap
 # compiler.
 llvm-tools = false
-std-features = ["panic-unwind", "compiler-builtins-no-f16-f128"]
+std-features = ["panic-unwind"]
 
 EOF