Sync from rust 0308df2

Author: bjorn3

example/float-minmax-pass.rs

@@ -22,7 +22,7 @@ fn main() {
 
     #[cfg(not(any(target_arch = "mips", target_arch = "mips64")))]
     let nan = f32::NAN;
-    // MIPS hardware treats f32::NAN as SNAN. Clear the signaling bit.
+    // MIPS hardware except MIPS R6 treats f32::NAN as SNAN. Clear the signaling bit.
     // See https://github.com/rust-lang/rust/issues/52746.
     #[cfg(any(target_arch = "mips", target_arch = "mips64"))]
     let nan = f32::from_bits(f32::NAN.to_bits() - 1);

src/abi/comments.rs

@@ -80,14 +80,7 @@ pub(super) fn add_local_place_comments<'tcx>(
         return;
     }
     let TyAndLayout { ty, layout } = place.layout();
-    let rustc_target::abi::LayoutS {
-        size,
-        align,
-        abi: _,
-        variants: _,
-        fields: _,
-        largest_niche: _,
-    } = layout.0.0;
+    let rustc_target::abi::LayoutS { size, align, .. } = layout.0.0;
 
     let (kind, extra) = place.debug_comment();
 

src/abi/mod.rs

@@ -70,7 +70,7 @@ pub(crate) fn get_function_sig<'tcx>(
     default_call_conv: CallConv,
     inst: Instance<'tcx>,
 ) -> Signature {
-    assert!(!inst.substs.has_infer());
+    assert!(!inst.args.has_infer());
     clif_sig_from_fn_abi(
         tcx,
         default_call_conv,
@@ -377,16 +377,16 @@ pub(crate) fn codegen_terminator_call<'tcx>(
     let ret_place = codegen_place(fx, destination);
 
     // Handle special calls like intrinsics and empty drop glue.
-    let instance = if let ty::FnDef(def_id, substs) = *func.layout().ty.kind() {
+    let instance = if let ty::FnDef(def_id, fn_args) = *func.layout().ty.kind() {
         let instance =
-            ty::Instance::expect_resolve(fx.tcx, ty::ParamEnv::reveal_all(), def_id, substs)
+            ty::Instance::expect_resolve(fx.tcx, ty::ParamEnv::reveal_all(), def_id, fn_args)
                 .polymorphize(fx.tcx);
 
         if fx.tcx.symbol_name(instance).name.starts_with("llvm.") {
             crate::intrinsics::codegen_llvm_intrinsic_call(
                 fx,
                 &fx.tcx.symbol_name(instance).name,
-                substs,
+                fn_args,
                 args,
                 ret_place,
                 target,
@@ -616,7 +616,7 @@ pub(crate) fn codegen_drop<'tcx>(
                 // `Instance::resolve_drop_in_place`?
                 let virtual_drop = Instance {
                     def: ty::InstanceDef::Virtual(drop_instance.def_id(), 0),
-                    substs: drop_instance.substs,
+                    args: drop_instance.args,
                 };
                 let fn_abi =
                     RevealAllLayoutCx(fx.tcx).fn_abi_of_instance(virtual_drop, ty::List::empty());
@@ -653,7 +653,7 @@ pub(crate) fn codegen_drop<'tcx>(
 
                 let virtual_drop = Instance {
                     def: ty::InstanceDef::Virtual(drop_instance.def_id(), 0),
-                    substs: drop_instance.substs,
+                    args: drop_instance.args,
                 };
                 let fn_abi =
                     RevealAllLayoutCx(fx.tcx).fn_abi_of_instance(virtual_drop, ty::List::empty());

src/base.rs

@@ -30,7 +30,7 @@ pub(crate) fn codegen_fn<'tcx>(
     module: &mut dyn Module,
     instance: Instance<'tcx>,
 ) -> CodegenedFunction {
-    debug_assert!(!instance.substs.has_infer());
+    debug_assert!(!instance.args.has_infer());
 
     let symbol_name = tcx.symbol_name(instance).name.to_string();
     let _timer = tcx.prof.generic_activity_with_arg("codegen fn", &*symbol_name);
@@ -594,13 +594,13 @@ fn codegen_stmt<'tcx>(
                     let from_ty = fx.monomorphize(operand.ty(&fx.mir.local_decls, fx.tcx));
                     let to_layout = fx.layout_of(fx.monomorphize(to_ty));
                     match *from_ty.kind() {
-                        ty::FnDef(def_id, substs) => {
+                        ty::FnDef(def_id, args) => {
                             let func_ref = fx.get_function_ref(
                                 Instance::resolve_for_fn_ptr(
                                     fx.tcx,
                                     ParamEnv::reveal_all(),
                                     def_id,
-                                    substs,
+                                    args,
                                 )
                                 .unwrap()
                                 .polymorphize(fx.tcx),
@@ -684,11 +684,11 @@ fn codegen_stmt<'tcx>(
                 ) => {
                     let operand = codegen_operand(fx, operand);
                     match *operand.layout().ty.kind() {
-                        ty::Closure(def_id, substs) => {
+                        ty::Closure(def_id, args) => {
                             let instance = Instance::resolve_closure(
                                 fx.tcx,
                                 def_id,
-                                substs,
+                                args,
                                 ty::ClosureKind::FnOnce,
                             )
                             .expect("failed to normalize and resolve closure during codegen")

src/constant.rs

@@ -57,7 +57,7 @@ pub(crate) fn codegen_tls_ref<'tcx>(
     let tls_ptr = if !def_id.is_local() && fx.tcx.needs_thread_local_shim(def_id) {
         let instance = ty::Instance {
             def: ty::InstanceDef::ThreadLocalShim(def_id),
-            substs: ty::InternalSubsts::empty(),
+            args: ty::GenericArgs::empty(),
         };
         let func_ref = fx.get_function_ref(instance);
         let call = fx.bcx.ins().call(func_ref, &[]);

src/driver/mod.rs

@@ -5,7 +5,7 @@
 //! [`codegen_static`]: crate::constant::codegen_static
 
 use rustc_data_structures::profiling::SelfProfilerRef;
-use rustc_middle::mir::mono::{Linkage as RLinkage, MonoItem, Visibility};
+use rustc_middle::mir::mono::{MonoItem, MonoItemData};
 
 use crate::prelude::*;
 
@@ -16,11 +16,11 @@ pub(crate) mod jit;
 fn predefine_mono_items<'tcx>(
     tcx: TyCtxt<'tcx>,
     module: &mut dyn Module,
-    mono_items: &[(MonoItem<'tcx>, (RLinkage, Visibility))],
+    mono_items: &[(MonoItem<'tcx>, MonoItemData)],
 ) {
     tcx.prof.generic_activity("predefine functions").run(|| {
         let is_compiler_builtins = tcx.is_compiler_builtins(LOCAL_CRATE);
-        for &(mono_item, (linkage, visibility)) in mono_items {
+        for &(mono_item, data) in mono_items {
             match mono_item {
                 MonoItem::Fn(instance) => {
                     let name = tcx.symbol_name(instance).name;
@@ -29,8 +29,8 @@ fn predefine_mono_items<'tcx>(
                         get_function_sig(tcx, module.target_config().default_call_conv, instance);
                     let linkage = crate::linkage::get_clif_linkage(
                         mono_item,
-                        linkage,
-                        visibility,
+                        data.linkage,
+                        data.visibility,
                         is_compiler_builtins,
                     );
                     module.declare_function(name, linkage, &sig).unwrap();

src/global_asm.rs

@@ -42,7 +42,7 @@ pub(crate) fn codegen_global_asm_item(tcx: TyCtxt<'_>, global_asm: &mut String,
                         InlineAsmOperand::SymFn { anon_const } => {
                             let ty = tcx.typeck_body(anon_const.body).node_type(anon_const.hir_id);
                             let instance = match ty.kind() {
-                                &ty::FnDef(def_id, substs) => Instance::new(def_id, substs),
+                                &ty::FnDef(def_id, args) => Instance::new(def_id, args),
                                 _ => span_bug!(op_sp, "asm sym is not a function"),
                             };
                             let symbol = tcx.symbol_name(instance);

src/inline_asm.rs

@@ -254,12 +254,12 @@ pub(crate) fn codegen_inline_asm<'tcx>(
             }
             InlineAsmOperand::SymFn { ref value } => {
                 let literal = fx.monomorphize(value.literal);
-                if let ty::FnDef(def_id, substs) = *literal.ty().kind() {
+                if let ty::FnDef(def_id, args) = *literal.ty().kind() {
                     let instance = ty::Instance::resolve_for_fn_ptr(
                         fx.tcx,
                         ty::ParamEnv::reveal_all(),
                         def_id,
-                        substs,
+                        args,
                     )
                     .unwrap();
                     let symbol = fx.tcx.symbol_name(instance);

src/intrinsics/llvm.rs

@@ -3,23 +3,35 @@
 use crate::intrinsics::*;
 use crate::prelude::*;
 
-use rustc_middle::ty::subst::SubstsRef;
+use rustc_middle::ty::GenericArgsRef;
 
 pub(crate) fn codegen_llvm_intrinsic_call<'tcx>(
     fx: &mut FunctionCx<'_, '_, 'tcx>,
     intrinsic: &str,
-    substs: SubstsRef<'tcx>,
+    generic_args: GenericArgsRef<'tcx>,
     args: &[mir::Operand<'tcx>],
     ret: CPlace<'tcx>,
     target: Option<BasicBlock>,
 ) {
     if intrinsic.starts_with("llvm.aarch64") {
         return llvm_aarch64::codegen_aarch64_llvm_intrinsic_call(
-            fx, intrinsic, substs, args, ret, target,
+            fx,
+            intrinsic,
+            generic_args,
+            args,
+            ret,
+            target,
         );
     }
     if intrinsic.starts_with("llvm.x86") {
-        return llvm_x86::codegen_x86_llvm_intrinsic_call(fx, intrinsic, substs, args, ret, target);
+        return llvm_x86::codegen_x86_llvm_intrinsic_call(
+            fx,
+            intrinsic,
+            generic_args,
+            args,
+            ret,
+            target,
+        );
     }
 
     match intrinsic {

src/intrinsics/llvm_aarch64.rs

@@ -3,12 +3,12 @@
 use crate::intrinsics::*;
 use crate::prelude::*;
 
-use rustc_middle::ty::subst::SubstsRef;
+use rustc_middle::ty::GenericArgsRef;
 
 pub(crate) fn codegen_aarch64_llvm_intrinsic_call<'tcx>(
     fx: &mut FunctionCx<'_, '_, 'tcx>,
     intrinsic: &str,
-    _substs: SubstsRef<'tcx>,
+    _args: GenericArgsRef<'tcx>,
     args: &[mir::Operand<'tcx>],
     ret: CPlace<'tcx>,
     target: Option<BasicBlock>,