Revert to f9a3086

Author: rust-timer

src/backtrace

@@ -26,9 +26,6 @@ of bugs:
 * Double-free, invalid free
 * Memory leaks
 
-The memory leak detection is enabled by default on Linux, and can be enabled
-with runtime flag `ASAN_OPTIONS=detect_leaks=1` on macOS.
-
 AddressSanitizer is supported on the following targets:
 
 * `x86_64-apple-darwin`
@@ -199,6 +196,10 @@ fn main() {
 
 ```shell
 $ export \
+  CC=clang \
+  CXX=clang++ \
+  CFLAGS='-fsanitize=memory -fsanitize-memory-track-origins' \
+  CXXFLAGS='-fsanitize=memory -fsanitize-memory-track-origins' \
   RUSTFLAGS='-Zsanitizer=memory -Zsanitizer-memory-track-origins' \
   RUSTDOCFLAGS='-Zsanitizer=memory -Zsanitizer-memory-track-origins'
 $ cargo clean

src/doc/unstable-book/src/compiler-flags/sanitizer.md

@@ -242,7 +242,7 @@ pub mod consts {
     /// The full circle constant (τ)
     ///
     /// Equal to 2π.
-    #[stable(feature = "tau_constant", since = "1.47.0")]
+    #[unstable(feature = "tau_constant", issue = "66770")]
     pub const TAU: f32 = 6.28318530717958647692528676655900577_f32;
 
     /// π/2

src/libcore/num/f32.rs

@@ -242,7 +242,7 @@ pub mod consts {
     /// The full circle constant (τ)
     ///
     /// Equal to 2π.
-    #[stable(feature = "tau_constant", since = "1.47.0")]
+    #[unstable(feature = "tau_constant", issue = "66770")]
     pub const TAU: f64 = 6.28318530717958647692528676655900577_f64;
 
     /// π/2

src/libcore/num/f64.rs

@@ -39,7 +39,7 @@ use crate::hash::Hash;
 /// [`Iterator`]: ../iter/trait.IntoIterator.html
 /// [slicing index]: ../slice/trait.SliceIndex.html
 #[doc(alias = "..")]
-#[derive(Copy, Clone, Default, PartialEq, Eq, Hash)]
+#[derive(Copy, Clone, PartialEq, Eq, Hash)]
 #[stable(feature = "rust1", since = "1.0.0")]
 pub struct RangeFull;
 
@@ -71,7 +71,7 @@ impl fmt::Debug for RangeFull {
 /// assert_eq!(arr[1..=3], [  1,2,3  ]);
 /// ```
 #[doc(alias = "..")]
-#[derive(Clone, Default, PartialEq, Eq, Hash)] // not Copy -- see #27186
+#[derive(Clone, PartialEq, Eq, Hash)] // not Copy -- see #27186
 #[stable(feature = "rust1", since = "1.0.0")]
 pub struct Range<Idx> {
     /// The lower bound of the range (inclusive).

src/libcore/ops/range.rs

@@ -13,7 +13,7 @@ use log::debug;
 use rustc_codegen_ssa::traits::*;
 
 use rustc_middle::ty::layout::{FnAbiExt, HasTyCtxt};
-use rustc_middle::ty::{self, Instance, TypeFoldable};
+use rustc_middle::ty::{Instance, TypeFoldable};
 
 /// Codegens a reference to a fn/method item, monomorphizing and
 /// inlining as it goes.
@@ -29,18 +29,14 @@ pub fn get_fn(cx: &CodegenCx<'ll, 'tcx>, instance: Instance<'tcx>) -> &'ll Value
 
     assert!(!instance.substs.needs_infer());
     assert!(!instance.substs.has_escaping_bound_vars());
+    assert!(!instance.substs.has_param_types_or_consts());
 
     if let Some(&llfn) = cx.instances.borrow().get(&instance) {
         return llfn;
     }
 
     let sym = tcx.symbol_name(instance).name;
-    debug!(
-        "get_fn({:?}: {:?}) => {}",
-        instance,
-        instance.ty(cx.tcx(), ty::ParamEnv::reveal_all()),
-        sym
-    );
+    debug!("get_fn({:?}: {:?}) => {}", instance, instance.monomorphic_ty(cx.tcx()), sym);
 
     let fn_abi = FnAbi::of_instance(cx, instance, &[]);
 

src/librustc_codegen_llvm/callee.rs

@@ -203,7 +203,7 @@ impl CodegenCx<'ll, 'tcx> {
             def_id
         );
 
-        let ty = instance.ty(self.tcx, ty::ParamEnv::reveal_all());
+        let ty = instance.monomorphic_ty(self.tcx);
         let sym = self.tcx.symbol_name(instance).name;
 
         debug!("get_static: sym={} instance={:?}", sym, instance);
@@ -361,7 +361,7 @@ impl StaticMethods for CodegenCx<'ll, 'tcx> {
             };
 
             let instance = Instance::mono(self.tcx, def_id);
-            let ty = instance.ty(self.tcx, ty::ParamEnv::reveal_all());
+            let ty = instance.monomorphic_ty(self.tcx);
             let llty = self.layout_of(ty).llvm_type(self);
             let g = if val_llty == llty {
                 g

src/librustc_codegen_llvm/consts.rs

@@ -700,8 +700,6 @@ pub fn type_metadata(cx: &CodegenCx<'ll, 'tcx>, t: Ty<'tcx>, usage_site_span: Sp
             prepare_tuple_metadata(cx, t, &tys, unique_type_id, usage_site_span, NO_SCOPE_METADATA)
                 .finalize(cx)
         }
-        // Type parameters from polymorphized functions.
-        ty::Param(_) => MetadataCreationResult::new(param_type_metadata(cx, t), false),
         _ => bug!("debuginfo: unexpected type in type_metadata: {:?}", t),
     };
 
@@ -957,20 +955,6 @@ fn pointer_type_metadata(
     }
 }
 
-fn param_type_metadata(cx: &CodegenCx<'ll, 'tcx>, t: Ty<'tcx>) -> &'ll DIType {
-    debug!("param_type_metadata: {:?}", t);
-    let name = format!("{:?}", t);
-    return unsafe {
-        llvm::LLVMRustDIBuilderCreateBasicType(
-            DIB(cx),
-            name.as_ptr().cast(),
-            name.len(),
-            Size::ZERO.bits(),
-            DW_ATE_unsigned,
-        )
-    };
-}
-
 pub fn compile_unit_metadata(
     tcx: TyCtxt<'_>,
     codegen_unit_name: &str,
@@ -2481,7 +2465,7 @@ pub fn create_global_var_metadata(cx: &CodegenCx<'ll, '_>, def_id: DefId, global
     };
 
     let is_local_to_unit = is_node_local_to_unit(cx, def_id);
-    let variable_type = Instance::mono(cx.tcx, def_id).ty(cx.tcx, ty::ParamEnv::reveal_all());
+    let variable_type = Instance::mono(cx.tcx, def_id).monomorphic_ty(cx.tcx);
     let type_metadata = type_metadata(cx, variable_type, span);
     let var_name = tcx.item_name(def_id).as_str();
     let linkage_name = mangled_name_of_instance(cx, Instance::mono(tcx, def_id)).name;

src/librustc_codegen_llvm/debuginfo/metadata.rs

@@ -26,7 +26,7 @@ use rustc_index::vec::IndexVec;
 use rustc_middle::mir;
 use rustc_middle::ty::layout::HasTyCtxt;
 use rustc_middle::ty::subst::{GenericArgKind, SubstsRef};
-use rustc_middle::ty::{self, Instance, ParamEnv, Ty, TypeFoldable};
+use rustc_middle::ty::{self, Instance, ParamEnv, Ty};
 use rustc_session::config::{self, DebugInfo};
 use rustc_span::symbol::Symbol;
 use rustc_span::{self, BytePos, Span};
@@ -470,9 +470,7 @@ impl DebugInfoMethods<'tcx> for CodegenCx<'ll, 'tcx> {
                     match impl_self_ty.kind {
                         ty::Adt(def, ..) if !def.is_box() => {
                             // Again, only create type information if full debuginfo is enabled
-                            if cx.sess().opts.debuginfo == DebugInfo::Full
-                                && !impl_self_ty.needs_subst()
-                            {
+                            if cx.sess().opts.debuginfo == DebugInfo::Full {
                                 Some(type_metadata(cx, impl_self_ty, rustc_span::DUMMY_SP))
                             } else {
                                 Some(namespace::item_namespace(cx, def.did))

src/librustc_codegen_llvm/debuginfo/mod.rs

@@ -160,7 +160,7 @@ impl IntrinsicCallMethods<'tcx> for Builder<'a, 'll, 'tcx> {
         caller_instance: ty::Instance<'tcx>,
     ) {
         let tcx = self.tcx;
-        let callee_ty = instance.ty(tcx, ty::ParamEnv::reveal_all());
+        let callee_ty = instance.monomorphic_ty(tcx);
 
         let (def_id, substs) = match callee_ty.kind {
             ty::FnDef(def_id, substs) => (def_id, substs),