Rollup of 7 pull requests

Cargo.lock

@@ -5700,6 +5700,7 @@ name = "tidy"
 version = "0.1.0"
 dependencies = [
  "cargo_metadata 0.15.4",
+ "fluent-syntax",
  "ignore",
  "miropt-test-tools",
  "regex",

compiler/rustc_ast_lowering/messages.ftl

@@ -78,7 +78,7 @@ ast_lowering_inline_asm_unsupported_target =
 ast_lowering_invalid_abi =
     invalid ABI: found `{$abi}`
     .label = invalid ABI
-    .note = invoke `{$command}` for a full list of supported calling conventions.
+    .note = invoke `{$command}` for a full list of supported calling conventions
 
 ast_lowering_invalid_abi_clobber_abi =
     invalid ABI for `clobber_abi`

compiler/rustc_codegen_llvm/src/asm.rs

@@ -13,7 +13,7 @@ use rustc_codegen_ssa::traits::*;
 use rustc_data_structures::fx::FxHashMap;
 use rustc_middle::ty::layout::TyAndLayout;
 use rustc_middle::{bug, span_bug, ty::Instance};
-use rustc_span::{Pos, Span};
+use rustc_span::{sym, Pos, Span, Symbol};
 use rustc_target::abi::*;
 use rustc_target::asm::*;
 use tracing::debug;
@@ -64,7 +64,7 @@ impl<'ll, 'tcx> AsmBuilderMethods<'tcx> for Builder<'_, 'll, 'tcx> {
                     let mut layout = None;
                     let ty = if let Some(ref place) = place {
                         layout = Some(&place.layout);
-                        llvm_fixup_output_type(self.cx, reg.reg_class(), &place.layout)
+                        llvm_fixup_output_type(self.cx, reg.reg_class(), &place.layout, instance)
                     } else if matches!(
                         reg.reg_class(),
                         InlineAsmRegClass::X86(
@@ -112,7 +112,7 @@ impl<'ll, 'tcx> AsmBuilderMethods<'tcx> for Builder<'_, 'll, 'tcx> {
                         // so we just use the type of the input.
                         &in_value.layout
                     };
-                    let ty = llvm_fixup_output_type(self.cx, reg.reg_class(), layout);
+                    let ty = llvm_fixup_output_type(self.cx, reg.reg_class(), layout, instance);
                     output_types.push(ty);
                     op_idx.insert(idx, constraints.len());
                     let prefix = if late { "=" } else { "=&" };
@@ -127,8 +127,13 @@ impl<'ll, 'tcx> AsmBuilderMethods<'tcx> for Builder<'_, 'll, 'tcx> {
         for (idx, op) in operands.iter().enumerate() {
             match *op {
                 InlineAsmOperandRef::In { reg, value } => {
-                    let llval =
-                        llvm_fixup_input(self, value.immediate(), reg.reg_class(), &value.layout);
+                    let llval = llvm_fixup_input(
+                        self,
+                        value.immediate(),
+                        reg.reg_class(),
+                        &value.layout,
+                        instance,
+                    );
                     inputs.push(llval);
                     op_idx.insert(idx, constraints.len());
                     constraints.push(reg_to_llvm(reg, Some(&value.layout)));
@@ -139,6 +144,7 @@ impl<'ll, 'tcx> AsmBuilderMethods<'tcx> for Builder<'_, 'll, 'tcx> {
                         in_value.immediate(),
                         reg.reg_class(),
                         &in_value.layout,
+                        instance,
                     );
                     inputs.push(value);
 
@@ -341,7 +347,8 @@ impl<'ll, 'tcx> AsmBuilderMethods<'tcx> for Builder<'_, 'll, 'tcx> {
                 } else {
                     self.extract_value(result, op_idx[&idx] as u64)
                 };
-                let value = llvm_fixup_output(self, value, reg.reg_class(), &place.layout);
+                let value =
+                    llvm_fixup_output(self, value, reg.reg_class(), &place.layout, instance);
                 OperandValue::Immediate(value).store(self, place);
             }
         }
@@ -913,12 +920,22 @@ fn llvm_asm_scalar_type<'ll>(cx: &CodegenCx<'ll, '_>, scalar: Scalar) -> &'ll Ty
     }
 }
 
+fn any_target_feature_enabled(
+    cx: &CodegenCx<'_, '_>,
+    instance: Instance<'_>,
+    features: &[Symbol],
+) -> bool {
+    let enabled = cx.tcx.asm_target_features(instance.def_id());
+    features.iter().any(|feat| enabled.contains(feat))
+}
+
 /// Fix up an input value to work around LLVM bugs.
 fn llvm_fixup_input<'ll, 'tcx>(
     bx: &mut Builder<'_, 'll, 'tcx>,
     mut value: &'ll Value,
     reg: InlineAsmRegClass,
     layout: &TyAndLayout<'tcx>,
+    instance: Instance<'_>,
 ) -> &'ll Value {
     let dl = &bx.tcx.data_layout;
     match (reg, layout.abi) {
@@ -1029,6 +1046,16 @@ fn llvm_fixup_input<'ll, 'tcx>(
                 _ => value,
             }
         }
+        (InlineAsmRegClass::RiscV(RiscVInlineAsmRegClass::freg), Abi::Scalar(s))
+            if s.primitive() == Primitive::Float(Float::F16)
+                && !any_target_feature_enabled(bx, instance, &[sym::zfhmin, sym::zfh]) =>
+        {
+            // Smaller floats are always "NaN-boxed" inside larger floats on RISC-V.
+            let value = bx.bitcast(value, bx.type_i16());
+            let value = bx.zext(value, bx.type_i32());
+            let value = bx.or(value, bx.const_u32(0xFFFF_0000));
+            bx.bitcast(value, bx.type_f32())
+        }
         _ => value,
     }
 }
@@ -1039,6 +1066,7 @@ fn llvm_fixup_output<'ll, 'tcx>(
     mut value: &'ll Value,
     reg: InlineAsmRegClass,
     layout: &TyAndLayout<'tcx>,
+    instance: Instance<'_>,
 ) -> &'ll Value {
     match (reg, layout.abi) {
         (InlineAsmRegClass::AArch64(AArch64InlineAsmRegClass::vreg), Abi::Scalar(s)) => {
@@ -1140,6 +1168,14 @@ fn llvm_fixup_output<'ll, 'tcx>(
                 _ => value,
             }
         }
+        (InlineAsmRegClass::RiscV(RiscVInlineAsmRegClass::freg), Abi::Scalar(s))
+            if s.primitive() == Primitive::Float(Float::F16)
+                && !any_target_feature_enabled(bx, instance, &[sym::zfhmin, sym::zfh]) =>
+        {
+            let value = bx.bitcast(value, bx.type_i32());
+            let value = bx.trunc(value, bx.type_i16());
+            bx.bitcast(value, bx.type_f16())
+        }
         _ => value,
     }
 }
@@ -1149,6 +1185,7 @@ fn llvm_fixup_output_type<'ll, 'tcx>(
     cx: &CodegenCx<'ll, 'tcx>,
     reg: InlineAsmRegClass,
     layout: &TyAndLayout<'tcx>,
+    instance: Instance<'_>,
 ) -> &'ll Type {
     match (reg, layout.abi) {
         (InlineAsmRegClass::AArch64(AArch64InlineAsmRegClass::vreg), Abi::Scalar(s)) => {
@@ -1242,6 +1279,12 @@ fn llvm_fixup_output_type<'ll, 'tcx>(
                 _ => layout.llvm_type(cx),
             }
         }
+        (InlineAsmRegClass::RiscV(RiscVInlineAsmRegClass::freg), Abi::Scalar(s))
+            if s.primitive() == Primitive::Float(Float::F16)
+                && !any_target_feature_enabled(cx, instance, &[sym::zfhmin, sym::zfh]) =>
+        {
+            cx.type_f32()
+        }
         _ => layout.llvm_type(cx),
     }
 }

compiler/rustc_const_eval/messages.ftl

@@ -341,8 +341,7 @@ const_eval_unallowed_fn_pointer_call = function pointer calls are not allowed in
 const_eval_unallowed_heap_allocations =
     allocations are not allowed in {const_eval_const_context}s
     .label = allocation not allowed in {const_eval_const_context}s
-    .teach_note =
-        The value of statics and constants must be known at compile time, and they live for the entire lifetime of a program. Creating a boxed value allocates memory on the heap at runtime, and therefore cannot be done at compile time.
+    .teach_note = The value of statics and constants must be known at compile time, and they live for the entire lifetime of a program. Creating a boxed value allocates memory on the heap at runtime, and therefore cannot be done at compile time.
 
 const_eval_unallowed_inline_asm =
     inline assembly is not allowed in {const_eval_const_context}s

compiler/rustc_const_eval/src/interpret/memory.rs

@@ -630,6 +630,13 @@ impl<'tcx, M: Machine<'tcx>> InterpCx<'tcx, M> {
         }
     }
 
+    /// Gives raw, immutable access to the `Allocation` address, without bounds or alignment checks.
+    /// The caller is responsible for calling the access hooks!
+    pub fn get_alloc_bytes_unchecked_raw(&self, id: AllocId) -> InterpResult<'tcx, *const u8> {
+        let alloc = self.get_alloc_raw(id)?;
+        Ok(alloc.get_bytes_unchecked_raw())
+    }
+
     /// Bounds-checked *but not align-checked* allocation access.
     pub fn get_ptr_alloc<'a>(
         &'a self,
@@ -713,6 +720,16 @@ impl<'tcx, M: Machine<'tcx>> InterpCx<'tcx, M> {
         Ok((alloc, &mut self.machine))
     }
 
+    /// Gives raw, mutable access to the `Allocation` address, without bounds or alignment checks.
+    /// The caller is responsible for calling the access hooks!
+    pub fn get_alloc_bytes_unchecked_raw_mut(
+        &mut self,
+        id: AllocId,
+    ) -> InterpResult<'tcx, *mut u8> {
+        let alloc = self.get_alloc_raw_mut(id)?.0;
+        Ok(alloc.get_bytes_unchecked_raw_mut())
+    }
+
     /// Bounds-checked *but not align-checked* allocation access.
     pub fn get_ptr_alloc_mut<'a>(
         &'a mut self,

compiler/rustc_hir_analysis/messages.ftl

@@ -194,7 +194,7 @@ hir_analysis_inherent_ty_outside = cannot define inherent `impl` for a type outs
     .span_help = alternatively add `#[rustc_has_incoherent_inherent_impls]` to the type and `#[rustc_allow_incoherent_impl]` to the relevant impl items
 
 hir_analysis_inherent_ty_outside_new = cannot define inherent `impl` for a type outside of the crate where the type is defined
-    .label = impl for type defined outside of crate.
+    .label = impl for type defined outside of crate
     .note = define and implement a trait or new type instead
 
 hir_analysis_inherent_ty_outside_primitive = cannot define inherent `impl` for primitive types outside of `core`
@@ -544,7 +544,7 @@ hir_analysis_unrecognized_intrinsic_function =
 
 hir_analysis_unused_associated_type_bounds =
     unnecessary associated type bound for not object safe associated type
-    .note = this associated type has a `where Self: Sized` bound. Thus, while the associated type can be specified, it cannot be used in any way, because trait objects are not `Sized`.
+    .note = this associated type has a `where Self: Sized` bound, and while the associated type can be specified, it cannot be used because trait objects are never `Sized`
     .suggestion = remove this bound
 
 hir_analysis_unused_generic_parameter =

compiler/rustc_lint/messages.ftl

@@ -75,7 +75,7 @@ lint_builtin_deprecated_attr_default_suggestion = remove this attribute
 lint_builtin_deprecated_attr_link = use of deprecated attribute `{$name}`: {$reason}. See {$link}
     .msg_suggestion = {$msg}
     .default_suggestion = remove this attribute
-lint_builtin_deprecated_attr_used = use of deprecated attribute `{$name}`: no longer used.
+lint_builtin_deprecated_attr_used = use of deprecated attribute `{$name}`: no longer used
 lint_builtin_deref_nullptr = dereferencing a null pointer
     .label = this code causes undefined behavior when executed
 
@@ -213,7 +213,7 @@ lint_default_hash_types = prefer `{$preferred}` over `{$used}`, it has better pe
 lint_default_source = `forbid` lint level is the default for {$id}
 
 lint_deprecated_lint_name =
-    lint name `{$name}` is deprecated and may not have an effect in the future.
+    lint name `{$name}` is deprecated and may not have an effect in the future
     .suggestion = change it to
     .help = change it to {$replace}
 
@@ -244,11 +244,11 @@ lint_duplicate_matcher_binding = duplicate matcher binding
 
 lint_enum_intrinsics_mem_discriminant =
     the return value of `mem::discriminant` is unspecified when called with a non-enum type
-    .note = the argument to `discriminant` should be a reference to an enum, but it was passed a reference to a `{$ty_param}`, which is not an enum.
+    .note = the argument to `discriminant` should be a reference to an enum, but it was passed a reference to a `{$ty_param}`, which is not an enum
 
 lint_enum_intrinsics_mem_variant =
     the return value of `mem::variant_count` is unspecified when called with a non-enum type
-    .note = the type parameter of `variant_count` should be an enum, but it was instantiated with the type `{$ty_param}`, which is not an enum.
+    .note = the type parameter of `variant_count` should be an enum, but it was instantiated with the type `{$ty_param}`, which is not an enum
 
 lint_expectation = this lint expectation is unfulfilled
     .note = the `unfulfilled_lint_expectations` lint can't be expected and will always produce this message

compiler/rustc_metadata/messages.ftl

@@ -248,13 +248,13 @@ metadata_rustc_lib_required =
     .help = try adding `extern crate rustc_driver;` at the top level of this crate
 
 metadata_stable_crate_id_collision =
-    found crates (`{$crate_name0}` and `{$crate_name1}`) with colliding StableCrateId values.
+    found crates (`{$crate_name0}` and `{$crate_name1}`) with colliding StableCrateId values
 
 metadata_std_required =
     `std` is required by `{$current_crate}` because it does not declare `#![no_std]`
 
 metadata_symbol_conflicts_current =
-    the current crate is indistinguishable from one of its dependencies: it has the same crate-name `{$crate_name}` and was compiled with the same `-C metadata` arguments. This will result in symbol conflicts between the two.
+    the current crate is indistinguishable from one of its dependencies: it has the same crate-name `{$crate_name}` and was compiled with the same `-C metadata` arguments, so this will result in symbol conflicts between the two
 
 metadata_target_no_std_support =
     the `{$locator_triple}` target may not support the standard library

compiler/rustc_middle/src/mir/interpret/allocation.rs

@@ -40,9 +40,16 @@ pub trait AllocBytes: Clone + fmt::Debug + Deref<Target = [u8]> + DerefMut<Targe
     /// Gives direct access to the raw underlying storage.
     ///
     /// Crucially this pointer is compatible with:
-    /// - other pointers retunred by this method, and
+    /// - other pointers returned by this method, and
     /// - references returned from `deref()`, as long as there was no write.
     fn as_mut_ptr(&mut self) -> *mut u8;
+
+    /// Gives direct access to the raw underlying storage.
+    ///
+    /// Crucially this pointer is compatible with:
+    /// - other pointers returned by this method, and
+    /// - references returned from `deref()`, as long as there was no write.
+    fn as_ptr(&self) -> *const u8;
 }
 
 /// Default `bytes` for `Allocation` is a `Box<u8>`.
@@ -62,6 +69,11 @@ impl AllocBytes for Box<[u8]> {
         // Carefully avoiding any intermediate references.
         ptr::addr_of_mut!(**self).cast()
     }
+
+    fn as_ptr(&self) -> *const u8 {
+        // Carefully avoiding any intermediate references.
+        ptr::addr_of!(**self).cast()
+    }
 }
 
 /// This type represents an Allocation in the Miri/CTFE core engine.
@@ -490,19 +502,27 @@ impl<Prov: Provenance, Extra, Bytes: AllocBytes> Allocation<Prov, Extra, Bytes>
         self.provenance.clear(range, cx)?;
 
         assert!(range.end().bytes_usize() <= self.bytes.len()); // need to do our own bounds-check
-        // Cruciall, we go via `AllocBytes::as_mut_ptr`, not `AllocBytes::deref_mut`.
+        // Crucially, we go via `AllocBytes::as_mut_ptr`, not `AllocBytes::deref_mut`.
         let begin_ptr = self.bytes.as_mut_ptr().wrapping_add(range.start.bytes_usize());
         let len = range.end().bytes_usize() - range.start.bytes_usize();
         Ok(ptr::slice_from_raw_parts_mut(begin_ptr, len))
     }
 
     /// This gives direct mutable access to the entire buffer, just exposing their internal state
-    /// without reseting anything. Directly exposes `AllocBytes::as_mut_ptr`. Only works if
+    /// without resetting anything. Directly exposes `AllocBytes::as_mut_ptr`. Only works if
     /// `OFFSET_IS_ADDR` is true.
     pub fn get_bytes_unchecked_raw_mut(&mut self) -> *mut u8 {
         assert!(Prov::OFFSET_IS_ADDR);
         self.bytes.as_mut_ptr()
     }
+
+    /// This gives direct immutable access to the entire buffer, just exposing their internal state
+    /// without resetting anything. Directly exposes `AllocBytes::as_ptr`. Only works if
+    /// `OFFSET_IS_ADDR` is true.
+    pub fn get_bytes_unchecked_raw(&self) -> *const u8 {
+        assert!(Prov::OFFSET_IS_ADDR);
+        self.bytes.as_ptr()
+    }
 }
 
 /// Reading and writing.

compiler/rustc_mir_build/messages.ftl

@@ -103,7 +103,7 @@ mir_build_deref_raw_pointer_requires_unsafe_unsafe_op_in_unsafe_fn_allowed =
     .note = raw pointers may be null, dangling or unaligned; they can violate aliasing rules and cause data races: all of these are undefined behavior
     .label = dereference of raw pointer
 
-mir_build_exceeds_mcdc_condition_limit = Number of conditions in decision ({$num_conditions}) exceeds limit ({$max_conditions}). MC/DC analysis will not count this expression.
+mir_build_exceeds_mcdc_condition_limit = number of conditions in decision ({$num_conditions}) exceeds limit ({$max_conditions}), so MC/DC analysis will not count this expression
 
 mir_build_extern_static_requires_unsafe =
     use of extern static is unsafe and requires unsafe block