Rollup merge of rust-lang#124286 - bjorn3:sync_cg_clif-2024-04-23, r=…

…bjorn3

Subtree sync for rustc_codegen_cranelift

This fixes a crash when compiling the standard library. In addition the Cranelift update fixes all the 128bit int abi incompatibility between cg_clif and cg_llvm.

r? ``@ghost``

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

compiler/rustc_codegen_cranelift/Cargo.toml

@@ -8,15 +8,15 @@ crate-type = ["dylib"]
 
 [dependencies]
 # These have to be in sync with each other
-cranelift-codegen = { version = "0.106.0", default-features = false, features = ["std", "unwind", "all-arch"] }
-cranelift-frontend = { version = "0.106.0" }
-cranelift-module = { version = "0.106.0" }
-cranelift-native = { version = "0.106.0" }
-cranelift-jit = { version = "0.106.0", optional = true }
-cranelift-object = { version = "0.106.0" }
+cranelift-codegen = { version = "0.107.0", default-features = false, features = ["std", "unwind", "all-arch"] }
+cranelift-frontend = { version = "0.107.0" }
+cranelift-module = { version = "0.107.0" }
+cranelift-native = { version = "0.107.0" }
+cranelift-jit = { version = "0.107.0", optional = true }
+cranelift-object = { version = "0.107.0" }
 target-lexicon = "0.12.0"
 gimli = { version = "0.28", default-features = false, features = ["write"]}
-object = { version = "0.32", default-features = false, features = ["std", "read_core", "write", "archive", "coff", "elf", "macho", "pe"] }
+object = { version = "0.33", default-features = false, features = ["std", "read_core", "write", "archive", "coff", "elf", "macho", "pe"] }
 
 indexmap = "2.0.0"
 libloading = { version = "0.8.0", optional = true }

compiler/rustc_codegen_cranelift/build_system/abi_cafe.rs

@@ -43,7 +43,13 @@ pub(crate) fn run(
     let mut cmd = ABI_CAFE.run(bootstrap_host_compiler, dirs);
     cmd.arg("--");
     cmd.arg("--pairs");
-    cmd.args(pairs);
+    cmd.args(
+        if cfg!(not(any(target_os = "macos", all(target_os = "windows", target_env = "msvc")))) {
+            &pairs[..]
+        } else {
+            &pairs[..2]
+        },
+    );
     cmd.arg("--add-rustc-codegen-backend");
     match cg_clif_dylib {
         CodegenBackend::Local(path) => {

compiler/rustc_codegen_cranelift/build_system/tests.rs

@@ -290,7 +290,7 @@ pub(crate) fn run_tests(
         && !skip_tests.contains(&"testsuite.extended_sysroot");
 
     if run_base_sysroot || run_extended_sysroot {
-        let mut target_compiler = build_sysroot::build_sysroot(
+        let target_compiler = build_sysroot::build_sysroot(
             dirs,
             channel,
             sysroot_kind,
@@ -299,11 +299,8 @@ pub(crate) fn run_tests(
             rustup_toolchain_name,
             target_triple.clone(),
         );
-        // Rust's build system denies a couple of lints that trigger on several of the test
-        // projects. Changing the code to fix them is not worth it, so just silence all lints.
-        target_compiler.rustflags.push("--cap-lints=allow".to_owned());
 
-        let runner = TestRunner::new(
+        let mut runner = TestRunner::new(
             dirs.clone(),
             target_compiler,
             use_unstable_features,
@@ -319,6 +316,9 @@ pub(crate) fn run_tests(
         }
 
         if run_extended_sysroot {
+            // Rust's build system denies a couple of lints that trigger on several of the test
+            // projects. Changing the code to fix them is not worth it, so just silence all lints.
+            runner.target_compiler.rustflags.push("--cap-lints=allow".to_owned());
             runner.run_testsuite(EXTENDED_SYSROOT_SUITE);
         } else {
             eprintln!("[SKIP] extended_sysroot tests");

compiler/rustc_codegen_cranelift/example/alloc_example.rs

@@ -1,4 +1,5 @@
 #![feature(start, core_intrinsics, alloc_error_handler, lang_items)]
+#![allow(internal_features)]
 #![no_std]
 
 extern crate alloc;

compiler/rustc_codegen_cranelift/example/alloc_system.rs

@@ -80,7 +80,6 @@ mod platform {
     extern "system" {
         fn GetProcessHeap() -> HANDLE;
         fn HeapAlloc(hHeap: HANDLE, dwFlags: DWORD, dwBytes: SIZE_T) -> LPVOID;
-        fn HeapReAlloc(hHeap: HANDLE, dwFlags: DWORD, lpMem: LPVOID, dwBytes: SIZE_T) -> LPVOID;
         fn HeapFree(hHeap: HANDLE, dwFlags: DWORD, lpMem: LPVOID) -> BOOL;
         fn GetLastError() -> DWORD;
     }
@@ -111,7 +110,7 @@ mod platform {
             allocate_with_flags(layout, HEAP_ZERO_MEMORY)
         }
         #[inline]
-        unsafe fn dealloc(&self, ptr: *mut u8, layout: Layout) {
+        unsafe fn dealloc(&self, ptr: *mut u8, _layout: Layout) {
             let header = get_header(ptr);
             let err = HeapFree(GetProcessHeap(), 0, header.0 as LPVOID);
             debug_assert!(err != 0, "Failed to free heap memory: {}", GetLastError());

compiler/rustc_codegen_cranelift/example/float-minmax-pass.rs

@@ -5,7 +5,7 @@
 // Test that the simd_f{min,max} intrinsics produce the correct results.
 
 #![feature(repr_simd, core_intrinsics)]
-#![allow(non_camel_case_types)]
+#![allow(internal_features, non_camel_case_types)]
 
 #[repr(simd)]
 #[derive(Copy, Clone, PartialEq, Debug)]

compiler/rustc_codegen_cranelift/example/mod_bench.rs

@@ -1,4 +1,5 @@
 #![feature(start, core_intrinsics, lang_items)]
+#![allow(internal_features)]
 #![no_std]
 
 #[cfg_attr(unix, link(name = "c"))]

compiler/rustc_codegen_cranelift/example/neon.rs

@@ -4,7 +4,9 @@
 
 #[cfg(target_arch = "aarch64")]
 use std::arch::aarch64::*;
+#[cfg(target_arch = "aarch64")]
 use std::mem::transmute;
+#[cfg(target_arch = "aarch64")]
 use std::simd::*;
 
 #[cfg(target_arch = "aarch64")]

compiler/rustc_codegen_cranelift/example/std_example.rs

@@ -7,6 +7,7 @@
     tuple_trait,
     unboxed_closures
 )]
+#![allow(internal_features)]
 
 #[cfg(target_arch = "x86_64")]
 use std::arch::x86_64::*;

compiler/rustc_codegen_cranelift/patches/0001-abi-cafe-Disable-some-test-on-x86_64-pc-windows-gnu.patch

@@ -11,14 +11,17 @@ diff --git a/src/report.rs b/src/report.rs
 index eeec614..f582867 100644
 --- a/src/report.rs
 +++ b/src/report.rs
-@@ -48,6 +48,12 @@ pub fn get_test_rules(test: &TestKey, caller: &dyn AbiImpl, callee: &dyn AbiImpl
+@@ -48,6 +48,15 @@ pub fn get_test_rules(test: &TestKey, caller: &dyn AbiImpl, callee: &dyn AbiImpl
      //
      // THIS AREA RESERVED FOR VENDORS TO APPLY PATCHES
 
 +    // x86_64-pc-windows-gnu has some broken i128 tests that aren't disabled by default
 +    if cfg!(all(target_os = "windows", target_env = "gnu")) && test.test_name == "ui128" {
 +        result.run = Link;
 +        result.check = Pass(Link);
++    } else if test.test_name == "ui128" {
++        result.run == Check;
++        result.check = Pass(Check);
 +    }
 +
      // END OF VENDOR RESERVED AREA

compiler/rustc_codegen_cranelift/rust-toolchain

@@ -1,3 +1,3 @@
 [toolchain]
-channel = "nightly-2024-04-11"
+channel = "nightly-2024-04-23"
 components = ["rust-src", "rustc-dev", "llvm-tools"]

compiler/rustc_codegen_cranelift/src/abi/mod.rs

@@ -7,11 +7,13 @@ mod returning;
 use std::borrow::Cow;
 
 use cranelift_codegen::ir::SigRef;
+use cranelift_codegen::isa::CallConv;
 use cranelift_module::ModuleError;
 use rustc_codegen_ssa::errors::CompilerBuiltinsCannotCall;
 use rustc_middle::middle::codegen_fn_attrs::CodegenFnAttrFlags;
 use rustc_middle::ty::layout::FnAbiOf;
 use rustc_middle::ty::print::with_no_trimmed_paths;
+use rustc_middle::ty::TypeVisitableExt;
 use rustc_monomorphize::is_call_from_compiler_builtins_to_upstream_monomorphization;
 use rustc_session::Session;
 use rustc_span::source_map::Spanned;

compiler/rustc_codegen_cranelift/src/base.rs

@@ -2,12 +2,14 @@
 
 use cranelift_codegen::ir::UserFuncName;
 use cranelift_codegen::CodegenError;
+use cranelift_frontend::{FunctionBuilder, FunctionBuilderContext};
 use cranelift_module::ModuleError;
 use rustc_ast::InlineAsmOptions;
 use rustc_index::IndexVec;
 use rustc_middle::ty::adjustment::PointerCoercion;
 use rustc_middle::ty::layout::FnAbiOf;
 use rustc_middle::ty::print::with_no_trimmed_paths;
+use rustc_middle::ty::TypeVisitableExt;
 use rustc_monomorphize::is_call_from_compiler_builtins_to_upstream_monomorphization;
 
 use crate::constant::ConstantCx;
@@ -823,7 +825,13 @@ fn codegen_stmt<'tcx>(
                     };
                     let data = codegen_operand(fx, data);
                     let meta = codegen_operand(fx, meta);
-                    let ptr_val = CValue::pointer_from_data_and_meta(data, meta, layout);
+                    assert!(data.layout().ty.is_unsafe_ptr());
+                    assert!(layout.ty.is_unsafe_ptr());
+                    let ptr_val = if meta.layout().is_zst() {
+                        data.cast_pointer_to(layout)
+                    } else {
+                        CValue::by_val_pair(data.load_scalar(fx), meta.load_scalar(fx), layout)
+                    };
                     lval.write_cvalue(fx, ptr_val);
                 }
                 Rvalue::Aggregate(ref kind, ref operands) => {

compiler/rustc_codegen_cranelift/src/common.rs

@@ -1,8 +1,10 @@
 use cranelift_codegen::isa::TargetFrontendConfig;
+use cranelift_frontend::{FunctionBuilder, FunctionBuilderContext};
 use rustc_index::IndexVec;
 use rustc_middle::ty::layout::{
-    FnAbiError, FnAbiOfHelpers, FnAbiRequest, LayoutError, LayoutOfHelpers,
+    self, FnAbiError, FnAbiOfHelpers, FnAbiRequest, LayoutError, LayoutOfHelpers,
 };
+use rustc_middle::ty::TypeFoldable;
 use rustc_span::source_map::Spanned;
 use rustc_target::abi::call::FnAbi;
 use rustc_target::abi::{Integer, Primitive};

compiler/rustc_codegen_cranelift/src/constant.rs

@@ -137,18 +137,23 @@ pub(crate) fn codegen_const_value<'tcx>(
                 let alloc_id = prov.alloc_id();
                 let base_addr = match fx.tcx.global_alloc(alloc_id) {
                     GlobalAlloc::Memory(alloc) => {
-                        let data_id = data_id_for_alloc_id(
-                            &mut fx.constants_cx,
-                            fx.module,
-                            alloc_id,
-                            alloc.inner().mutability,
-                        );
-                        let local_data_id =
-                            fx.module.declare_data_in_func(data_id, &mut fx.bcx.func);
-                        if fx.clif_comments.enabled() {
-                            fx.add_comment(local_data_id, format!("{:?}", alloc_id));
+                        if alloc.inner().len() == 0 {
+                            assert_eq!(offset, Size::ZERO);
+                            fx.bcx.ins().iconst(fx.pointer_type, alloc.inner().align.bytes() as i64)
+                        } else {
+                            let data_id = data_id_for_alloc_id(
+                                &mut fx.constants_cx,
+                                fx.module,
+                                alloc_id,
+                                alloc.inner().mutability,
+                            );
+                            let local_data_id =
+                                fx.module.declare_data_in_func(data_id, &mut fx.bcx.func);
+                            if fx.clif_comments.enabled() {
+                                fx.add_comment(local_data_id, format!("{:?}", alloc_id));
+                            }
+                            fx.bcx.ins().global_value(fx.pointer_type, local_data_id)
                         }
-                        fx.bcx.ins().global_value(fx.pointer_type, local_data_id)
                     }
                     GlobalAlloc::Function(instance) => {
                         let func_id = crate::abi::import_function(fx.tcx, fx.module, instance);

compiler/rustc_codegen_cranelift/src/debuginfo/mod.rs

@@ -19,7 +19,7 @@ use rustc_codegen_ssa::debuginfo::type_names;
 use rustc_hir::def::DefKind;
 use rustc_hir::def_id::DefIdMap;
 use rustc_session::Session;
-use rustc_span::{SourceFileHash, StableSourceFileId};
+use rustc_span::{FileNameDisplayPreference, SourceFileHash, StableSourceFileId};
 use rustc_target::abi::call::FnAbi;
 
 pub(crate) use self::emit::{DebugReloc, DebugRelocName};

compiler/rustc_codegen_cranelift/src/debuginfo/object.rs

@@ -2,7 +2,7 @@ use cranelift_module::{DataId, FuncId};
 use cranelift_object::ObjectProduct;
 use gimli::SectionId;
 use object::write::{Relocation, StandardSegment};
-use object::{RelocationEncoding, SectionKind};
+use object::{RelocationEncoding, RelocationFlags, SectionKind};
 use rustc_data_structures::fx::FxHashMap;
 
 use crate::debuginfo::{DebugReloc, DebugRelocName};
@@ -72,9 +72,11 @@ impl WriteDebugInfo for ObjectProduct {
                 Relocation {
                     offset: u64::from(reloc.offset),
                     symbol,
-                    kind: reloc.kind,
-                    encoding: RelocationEncoding::Generic,
-                    size: reloc.size * 8,
+                    flags: RelocationFlags::Generic {
+                        kind: reloc.kind,
+                        encoding: RelocationEncoding::Generic,
+                        size: reloc.size * 8,
+                    },
                     addend: i64::try_from(symbol_offset).unwrap() + reloc.addend,
                 },
             )

compiler/rustc_codegen_cranelift/src/driver/jit.rs

@@ -6,6 +6,7 @@ use std::ffi::CString;
 use std::os::raw::{c_char, c_int};
 use std::sync::{mpsc, Mutex, OnceLock};
 
+use cranelift_frontend::{FunctionBuilder, FunctionBuilderContext};
 use cranelift_jit::{JITBuilder, JITModule};
 use rustc_codegen_ssa::CrateInfo;
 use rustc_middle::mir::mono::MonoItem;

compiler/rustc_codegen_cranelift/src/inline_asm.rs

@@ -2,6 +2,7 @@
 
 use std::fmt::Write;
 
+use cranelift_codegen::isa::CallConv;
 use rustc_ast::ast::{InlineAsmOptions, InlineAsmTemplatePiece};
 use rustc_span::sym;
 use rustc_target::asm::*;
@@ -785,9 +786,9 @@ fn call_inline_asm<'tcx>(
     for (offset, place) in outputs {
         let ty = if place.layout().ty.is_simd() {
             let (lane_count, lane_type) = place.layout().ty.simd_size_and_type(fx.tcx);
-            fx.clif_type(lane_type).unwrap().by(lane_count.try_into().unwrap()).unwrap()
+            asm_clif_type(fx, lane_type).unwrap().by(lane_count.try_into().unwrap()).unwrap()
         } else {
-            fx.clif_type(place.layout().ty).unwrap()
+            asm_clif_type(fx, place.layout().ty).unwrap()
         };
         let value = stack_slot.offset(fx, i32::try_from(offset.bytes()).unwrap().into()).load(
             fx,
@@ -797,3 +798,24 @@ fn call_inline_asm<'tcx>(
         place.write_cvalue(fx, CValue::by_val(value, place.layout()));
     }
 }
+
+fn asm_clif_type<'tcx>(fx: &FunctionCx<'_, '_, 'tcx>, ty: Ty<'tcx>) -> Option<types::Type> {
+    match ty.kind() {
+        // Adapted from https://github.com/rust-lang/rust/blob/f3c66088610c1b80110297c2d9a8b5f9265b013f/compiler/rustc_hir_analysis/src/check/intrinsicck.rs#L136-L151
+        ty::Adt(adt, args) if Some(adt.did()) == fx.tcx.lang_items().maybe_uninit() => {
+            let fields = &adt.non_enum_variant().fields;
+            let ty = fields[FieldIdx::from_u32(1)].ty(fx.tcx, args);
+            let ty::Adt(ty, args) = ty.kind() else {
+                unreachable!("expected first field of `MaybeUninit` to be an ADT")
+            };
+            assert!(
+                ty.is_manually_drop(),
+                "expected first field of `MaybeUninit` to be `ManuallyDrop`"
+            );
+            let fields = &ty.non_enum_variant().fields;
+            let ty = fields[FieldIdx::ZERO].ty(fx.tcx, args);
+            fx.clif_type(ty)
+        }
+        _ => fx.clif_type(ty),
+    }
+}

compiler/rustc_codegen_cranelift/src/lib.rs

@@ -87,21 +87,17 @@ mod prelude {
         AbiParam, Block, FuncRef, Inst, InstBuilder, MemFlags, Signature, SourceLoc, StackSlot,
         StackSlotData, StackSlotKind, TrapCode, Type, Value,
     };
-    pub(crate) use cranelift_codegen::isa::{self, CallConv};
     pub(crate) use cranelift_codegen::Context;
-    pub(crate) use cranelift_frontend::{FunctionBuilder, FunctionBuilderContext, Variable};
     pub(crate) use cranelift_module::{self, DataDescription, FuncId, Linkage, Module};
     pub(crate) use rustc_data_structures::fx::{FxHashMap, FxIndexMap};
     pub(crate) use rustc_hir::def_id::{DefId, LOCAL_CRATE};
     pub(crate) use rustc_index::Idx;
-    pub(crate) use rustc_middle::bug;
     pub(crate) use rustc_middle::mir::{self, *};
-    pub(crate) use rustc_middle::ty::layout::{self, LayoutOf, TyAndLayout};
+    pub(crate) use rustc_middle::ty::layout::{LayoutOf, TyAndLayout};
     pub(crate) use rustc_middle::ty::{
-        self, FloatTy, Instance, InstanceDef, IntTy, ParamEnv, Ty, TyCtxt, TypeAndMut,
-        TypeFoldable, TypeVisitableExt, UintTy,
+        self, FloatTy, Instance, InstanceDef, IntTy, ParamEnv, Ty, TyCtxt, TypeAndMut, UintTy,
     };
-    pub(crate) use rustc_span::{FileNameDisplayPreference, Span};
+    pub(crate) use rustc_span::Span;
     pub(crate) use rustc_target::abi::{Abi, FieldIdx, Scalar, Size, VariantIdx, FIRST_VARIANT};
 
     pub(crate) use crate::abi::*;
@@ -261,7 +257,7 @@ fn target_triple(sess: &Session) -> target_lexicon::Triple {
     }
 }
 
-fn build_isa(sess: &Session, backend_config: &BackendConfig) -> Arc<dyn isa::TargetIsa + 'static> {
+fn build_isa(sess: &Session, backend_config: &BackendConfig) -> Arc<dyn TargetIsa + 'static> {
     use target_lexicon::BinaryFormat;
 
     let target_triple = crate::target_triple(sess);

compiler/rustc_codegen_cranelift/src/main_shim.rs

@@ -1,3 +1,4 @@
+use cranelift_frontend::{FunctionBuilder, FunctionBuilderContext};
 use rustc_hir::LangItem;
 use rustc_middle::ty::AssocKind;
 use rustc_middle::ty::GenericArg;

compiler/rustc_codegen_cranelift/src/value_and_place.rs

@@ -2,6 +2,7 @@
 
 use cranelift_codegen::entity::EntityRef;
 use cranelift_codegen::ir::immediates::Offset32;
+use cranelift_frontend::Variable;
 use rustc_middle::ty::FnSig;
 
 use crate::prelude::*;
@@ -94,23 +95,6 @@ impl<'tcx> CValue<'tcx> {
         CValue(CValueInner::ByValPair(value, extra), layout)
     }
 
-    /// For `AggregateKind::RawPtr`, create a pointer from its parts.
-    ///
-    /// Panics if the `layout` is not a raw pointer.
-    pub(crate) fn pointer_from_data_and_meta(
-        data: CValue<'tcx>,
-        meta: CValue<'tcx>,
-        layout: TyAndLayout<'tcx>,
-    ) -> CValue<'tcx> {
-        assert!(layout.ty.is_unsafe_ptr());
-        let inner = match (data.0, meta.0) {
-            (CValueInner::ByVal(p), CValueInner::ByVal(m)) => CValueInner::ByValPair(p, m),
-            (p @ CValueInner::ByVal(_), CValueInner::ByRef(..)) if meta.1.is_zst() => p,
-            _ => bug!("RawPtr operands {data:?} {meta:?}"),
-        };
-        CValue(inner, layout)
-    }
-
     pub(crate) fn layout(&self) -> TyAndLayout<'tcx> {
         self.1
     }