Sync from rust 9c3ad80

Author: bjorn3

example/float-minmax-pass.rs

@@ -4,17 +4,14 @@
 
 // Test that the simd_f{min,max} intrinsics produce the correct results.
 
-#![feature(repr_simd, platform_intrinsics)]
+#![feature(repr_simd, core_intrinsics)]
 #![allow(non_camel_case_types)]
 
 #[repr(simd)]
 #[derive(Copy, Clone, PartialEq, Debug)]
 struct f32x4(pub f32, pub f32, pub f32, pub f32);
 
-extern "platform-intrinsic" {
-    fn simd_fmin<T>(x: T, y: T) -> T;
-    fn simd_fmax<T>(x: T, y: T) -> T;
-}
+use std::intrinsics::simd::*;
 
 fn main() {
     let x = f32x4(1.0, 2.0, 3.0, 4.0);

example/mini_core.rs

@@ -525,8 +525,11 @@ pub struct Unique<T: ?Sized> {
 impl<T: ?Sized, U: ?Sized> CoerceUnsized<Unique<U>> for Unique<T> where T: Unsize<U> {}
 impl<T: ?Sized, U: ?Sized> DispatchFromDyn<Unique<U>> for Unique<T> where T: Unsize<U> {}
 
+#[lang = "global_alloc_ty"]
+pub struct Global;
+
 #[lang = "owned_box"]
-pub struct Box<T: ?Sized, A = ()>(Unique<T>, A);
+pub struct Box<T: ?Sized, A = Global>(Unique<T>, A);
 
 impl<T: ?Sized + Unsize<U>, U: ?Sized> CoerceUnsized<Box<U>> for Box<T> {}
 
@@ -536,7 +539,7 @@ impl<T> Box<T> {
             let size = intrinsics::size_of::<T>();
             let ptr = libc::malloc(size);
             intrinsics::copy(&val as *const T as *const u8, ptr, size);
-            Box(Unique { pointer: NonNull(ptr as *const T), _marker: PhantomData }, ())
+            Box(Unique { pointer: NonNull(ptr as *const T), _marker: PhantomData }, Global)
         }
     }
 }

patches/0029-stdlib-rawdylib-processprng.patch

@@ -0,0 +1,47 @@
+From 9f65e742ba3e41474e6126c6c4469c48eaa6ca7e Mon Sep 17 00:00:00 2001
+From: Chris Denton <chris@chrisdenton.dev>
+Date: Tue, 20 Feb 2024 16:01:40 -0300
+Subject: [PATCH] Don't use raw-dylib in std
+
+---
+ library/std/src/sys/pal/windows/c.rs    | 2 +-
+ library/std/src/sys/pal/windows/rand.rs | 3 +--
+ 2 files changed, 2 insertions(+), 3 deletions(-)
+
+diff --git a/library/std/src/sys/pal/windows/c.rs b/library/std/src/sys/pal/windows/c.rs
+index ad8e01bfa9b..9ca8e4c16ce 100644
+--- a/library/std/src/sys/pal/windows/c.rs
++++ b/library/std/src/sys/pal/windows/c.rs
+@@ -323,7 +323,7 @@ pub unsafe fn NtWriteFile(
+ 
+ // Use raw-dylib to import ProcessPrng as we can't rely on there being an import library.
+ cfg_if::cfg_if! {
+-if #[cfg(not(target_vendor = "win7"))] {
++if #[cfg(any())] {
+     #[cfg(target_arch = "x86")]
+     #[link(name = "bcryptprimitives", kind = "raw-dylib", import_name_type = "undecorated")]
+     extern "system" {
+diff --git a/library/std/src/sys/pal/windows/rand.rs b/library/std/src/sys/pal/windows/rand.rs
+index e427546222a..f2fe42a4d51 100644
+--- a/library/std/src/sys/pal/windows/rand.rs
++++ b/library/std/src/sys/pal/windows/rand.rs
+@@ -2,7 +2,7 @@
+ use core::mem;
+ use core::ptr;
+ 
+-#[cfg(not(target_vendor = "win7"))]
++#[cfg(any())]
+ #[inline]
+ pub fn hashmap_random_keys() -> (u64, u64) {
+     let mut v = (0, 0);
+@@ -13,7 +13,6 @@ pub fn hashmap_random_keys() -> (u64, u64) {
+     v
+ }
+ 
+-#[cfg(target_vendor = "win7")]
+ pub fn hashmap_random_keys() -> (u64, u64) {
+     use crate::ffi::c_void;
+     use crate::io;
+-- 
+2.42.0.windows.2
+

src/archive.rs

@@ -8,7 +8,7 @@ use rustc_session::Session;
 pub(crate) struct ArArchiveBuilderBuilder;
 
 impl ArchiveBuilderBuilder for ArArchiveBuilderBuilder {
-    fn new_archive_builder<'a>(&self, sess: &'a Session) -> Box<dyn ArchiveBuilder<'a> + 'a> {
+    fn new_archive_builder<'a>(&self, sess: &'a Session) -> Box<dyn ArchiveBuilder + 'a> {
         Box::new(ArArchiveBuilder::new(sess, get_native_object_symbols))
     }
 

src/common.rs

@@ -33,8 +33,10 @@ pub(crate) fn scalar_to_clif_type(tcx: TyCtxt<'_>, scalar: Scalar) -> Type {
             Integer::I64 => types::I64,
             Integer::I128 => types::I128,
         },
+        Primitive::F16 => unimplemented!("f16_f128"),
         Primitive::F32 => types::F32,
         Primitive::F64 => types::F64,
+        Primitive::F128 => unimplemented!("f16_f128"),
         // FIXME(erikdesjardins): handle non-default addrspace ptr sizes
         Primitive::Pointer(_) => pointer_ty(tcx),
     }
@@ -61,8 +63,10 @@ fn clif_type_from_ty<'tcx>(tcx: TyCtxt<'tcx>, ty: Ty<'tcx>) -> Option<types::Typ
         },
         ty::Char => types::I32,
         ty::Float(size) => match size {
+            FloatTy::F16 => unimplemented!("f16_f128"),
             FloatTy::F32 => types::F32,
             FloatTy::F64 => types::F64,
+            FloatTy::F128 => unimplemented!("f16_f128"),
         },
         ty::FnPtr(_) => pointer_ty(tcx),
         ty::RawPtr(TypeAndMut { ty: pointee_ty, mutbl: _ }) | ty::Ref(_, pointee_ty, _) => {

src/intrinsics/mod.rs

@@ -23,7 +23,7 @@ use rustc_middle::ty::layout::{HasParamEnv, ValidityRequirement};
 use rustc_middle::ty::print::{with_no_trimmed_paths, with_no_visible_paths};
 use rustc_middle::ty::GenericArgsRef;
 use rustc_span::source_map::Spanned;
-use rustc_span::symbol::{kw, sym, Symbol};
+use rustc_span::symbol::{sym, Symbol};
 
 pub(crate) use self::llvm::codegen_llvm_intrinsic_call;
 use crate::prelude::*;
@@ -1132,7 +1132,7 @@ fn codegen_regular_intrinsic_call<'tcx>(
             ret.write_cvalue(fx, val);
         }
 
-        kw::Try => {
+        sym::catch_unwind => {
             intrinsic_args!(fx, args => (f, data, catch_fn); intrinsic);
             let f = f.load_scalar(fx);
             let data = data.load_scalar(fx);
@@ -1152,17 +1152,26 @@ fn codegen_regular_intrinsic_call<'tcx>(
             ret.write_cvalue(fx, ret_val);
         }
 
-        sym::fadd_fast | sym::fsub_fast | sym::fmul_fast | sym::fdiv_fast | sym::frem_fast => {
+        sym::fadd_fast
+        | sym::fsub_fast
+        | sym::fmul_fast
+        | sym::fdiv_fast
+        | sym::frem_fast
+        | sym::fadd_algebraic
+        | sym::fsub_algebraic
+        | sym::fmul_algebraic
+        | sym::fdiv_algebraic
+        | sym::frem_algebraic => {
             intrinsic_args!(fx, args => (x, y); intrinsic);
 
             let res = crate::num::codegen_float_binop(
                 fx,
                 match intrinsic {
-                    sym::fadd_fast => BinOp::Add,
-                    sym::fsub_fast => BinOp::Sub,
-                    sym::fmul_fast => BinOp::Mul,
-                    sym::fdiv_fast => BinOp::Div,
-                    sym::frem_fast => BinOp::Rem,
+                    sym::fadd_fast | sym::fadd_algebraic => BinOp::Add,
+                    sym::fsub_fast | sym::fsub_algebraic => BinOp::Sub,
+                    sym::fmul_fast | sym::fmul_algebraic => BinOp::Mul,
+                    sym::fdiv_fast | sym::fdiv_algebraic => BinOp::Div,
+                    sym::frem_fast | sym::frem_algebraic => BinOp::Rem,
                     _ => unreachable!(),
                 },
                 x,
@@ -1246,7 +1255,17 @@ fn codegen_regular_intrinsic_call<'tcx>(
 
         // Unimplemented intrinsics must have a fallback body. The fallback body is obtained
         // by converting the `InstanceDef::Intrinsic` to an `InstanceDef::Item`.
-        _ => return Err(Instance::new(instance.def_id(), instance.args)),
+        _ => {
+            let intrinsic = fx.tcx.intrinsic(instance.def_id()).unwrap();
+            if intrinsic.must_be_overridden {
+                span_bug!(
+                    source_info.span,
+                    "intrinsic {} must be overridden by codegen_cranelift, but isn't",
+                    intrinsic.name,
+                );
+            }
+            return Err(Instance::new(instance.def_id(), instance.args));
+        }
     }
 
     let ret_block = fx.get_block(destination.unwrap());

src/intrinsics/simd.rs

@@ -743,7 +743,7 @@ pub(super) fn codegen_simd_intrinsic_call<'tcx>(
             simd_reduce(fx, v, None, ret, &|fx, _ty, a, b| fx.bcx.ins().bxor(a, b));
         }
 
-        sym::simd_reduce_min | sym::simd_reduce_min_nanless => {
+        sym::simd_reduce_min => {
             intrinsic_args!(fx, args => (v); intrinsic);
 
             if !v.layout().ty.is_simd() {
@@ -762,7 +762,7 @@ pub(super) fn codegen_simd_intrinsic_call<'tcx>(
             });
         }
 
-        sym::simd_reduce_max | sym::simd_reduce_max_nanless => {
+        sym::simd_reduce_max => {
             intrinsic_args!(fx, args => (v); intrinsic);
 
             if !v.layout().ty.is_simd() {

src/unsize.rs

@@ -74,10 +74,6 @@ fn unsize_ptr<'tcx>(
         | (&ty::RawPtr(ty::TypeAndMut { ty: a, .. }), &ty::RawPtr(ty::TypeAndMut { ty: b, .. })) => {
             (src, unsized_info(fx, *a, *b, old_info))
         }
-        (&ty::Adt(def_a, _), &ty::Adt(def_b, _)) if def_a.is_box() && def_b.is_box() => {
-            let (a, b) = (src_layout.ty.boxed_ty(), dst_layout.ty.boxed_ty());
-            (src, unsized_info(fx, a, b, old_info))
-        }
         (&ty::Adt(def_a, _), &ty::Adt(def_b, _)) => {
             assert_eq!(def_a, def_b);