Rustup to rustc 1.45.0-nightly (56daaf669 2020-06-03)

build_sysroot/Cargo.lock

@@ -67,9 +67,9 @@ dependencies = [
 
 [[package]]
 name = "compiler_builtins"
-version = "0.1.28"
+version = "0.1.32"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "439a6fab343b1dab347823537734a5cd4ae6ae2000b465ab886f64cdb723bd14"
+checksum = "7bc4ac2c824d2bfc612cba57708198547e9a26943af0632aff033e0693074d5c"
 dependencies = [
  "rustc-std-workspace-core",
 ]

example/mini_core.rs

@@ -401,7 +401,7 @@ pub trait FnMut<Args>: FnOnce<Args> {
 
 #[lang = "panic"]
 #[track_caller]
-pub fn panic(msg: &str) -> ! {
+pub fn panic(_msg: &str) -> ! {
     unsafe {
         libc::puts("Panicking\n\0" as *const str as *const u8);
         intrinsics::abort();

example/mini_core_hello_world.rs

@@ -414,10 +414,10 @@ pub enum E2<X> {
 
 fn check_niche_behavior () {
     if let E1::V2 { .. } = (E1::V1 { f: true }) {
-        unsafe { intrinsics::abort(); }
+        intrinsics::abort();
     }
 
     if let E2::V1 { .. } = E2::V3::<Infallible> {
-        unsafe { intrinsics::abort(); }
+        intrinsics::abort();
     }
 }

example/mod_bench.rs

@@ -6,10 +6,8 @@ extern {}
 
 #[panic_handler]
 fn panic_handler(_: &core::panic::PanicInfo) -> ! {
-    unsafe {
     core::intrinsics::abort();
 }
-}
 
 #[lang="eh_personality"]
 fn eh_personality(){}
@@ -32,6 +30,6 @@ fn main(_argc: isize, _argv: *const *const u8) -> isize {
 #[inline(never)]
 fn black_box(i: u32) {
     if i != 1 {
-        unsafe { core::intrinsics::abort(); }
+        core::intrinsics::abort();
     }
 }

rust-toolchain

@@ -1 +1 @@
-nightly-2020-05-25
+nightly-2020-06-04

src/base.rs

@@ -309,6 +309,7 @@ fn codegen_fn_content(fx: &mut FunctionCx<'_, '_, impl Backend>) {
                 operands,
                 options: _,
                 destination,
+                line_spans: _,
             } => {
                 match template {
                     &[] => {
@@ -396,6 +397,10 @@ fn trans_stmt<'tcx>(
                     let place = trans_place(fx, *place);
                     place.write_place_ref(fx, lval);
                 }
+                Rvalue::ThreadLocalRef(def_id) => {
+                    let val = crate::constant::codegen_tls_ref(fx, *def_id, lval.layout());
+                    lval.write_cvalue(fx, val);
+                }
                 Rvalue::BinaryOp(bin_op, lhs, rhs) => {
                     let lhs = trans_operand(fx, lhs);
                     let rhs = trans_operand(fx, rhs);
@@ -708,7 +713,7 @@ pub(crate) fn trans_place<'tcx>(
     let mut cplace = fx.get_local_place(place.local);
 
     for elem in place.projection {
-        match *elem {
+        match elem {
             PlaceElem::Deref => {
                 cplace = cplace.place_deref(fx);
             }

src/constant.rs

@@ -8,7 +8,7 @@ use rustc_middle::ty::{Const, ConstKind};
 use rustc_target::abi::Align;
 use rustc_data_structures::fx::FxHashSet;
 
-use cranelift_codegen::ir::GlobalValue;
+use cranelift_codegen::ir::GlobalValueData;
 use cranelift_module::*;
 
 use crate::prelude::*;
@@ -38,6 +38,20 @@ pub(crate) fn codegen_static(constants_cx: &mut ConstantCx, def_id: DefId) {
     constants_cx.todo.push(TodoItem::Static(def_id));
 }
 
+pub(crate) fn codegen_tls_ref<'tcx>(
+    fx: &mut FunctionCx<'_, 'tcx, impl Backend>,
+    def_id: DefId,
+    layout: TyAndLayout<'tcx>,
+) -> CValue<'tcx> {
+    let linkage = crate::linkage::get_static_ref_linkage(fx.tcx, def_id);
+    let data_id = data_id_for_static(fx.tcx, fx.module, def_id, linkage);
+    let local_data_id = fx.module.declare_data_in_func(data_id, &mut fx.bcx.func);
+    #[cfg(debug_assertions)]
+    fx.add_comment(local_data_id, format!("tls {:?}", def_id));
+    let tls_ptr = fx.bcx.ins().tls_value(fx.pointer_type, local_data_id);
+    CValue::by_val(tls_ptr, layout)
+}
+
 fn codegen_static_ref<'tcx>(
     fx: &mut FunctionCx<'_, 'tcx, impl Backend>,
     def_id: DefId,
@@ -48,7 +62,10 @@ fn codegen_static_ref<'tcx>(
     let local_data_id = fx.module.declare_data_in_func(data_id, &mut fx.bcx.func);
     #[cfg(debug_assertions)]
     fx.add_comment(local_data_id, format!("{:?}", def_id));
-    cplace_for_dataid(fx, layout, local_data_id)
+    let global_ptr = fx.bcx.ins().global_value(fx.pointer_type, local_data_id);
+    assert!(!layout.is_unsized(), "unsized statics aren't supported");
+    assert!(matches!(fx.bcx.func.global_values[local_data_id], GlobalValueData::Symbol { tls: false, ..}), "tls static referenced without Rvalue::ThreadLocalRef");
+    CPlace::for_ptr(crate::pointer::Pointer::new(global_ptr), layout)
 }
 
 pub(crate) fn trans_constant<'tcx>(
@@ -245,16 +262,6 @@ fn data_id_for_static(
     data_id
 }
 
-fn cplace_for_dataid<'tcx>(
-    fx: &mut FunctionCx<'_, 'tcx, impl Backend>,
-    layout: TyAndLayout<'tcx>,
-    local_data_id: GlobalValue,
-) -> CPlace<'tcx> {
-    let global_ptr = fx.bcx.ins().global_value(fx.pointer_type, local_data_id);
-    assert!(!layout.is_unsized(), "unsized statics aren't supported");
-    CPlace::for_ptr(crate::pointer::Pointer::new(global_ptr), layout)
-}
-
 fn define_all_allocs(tcx: TyCtxt<'_>, module: &mut Module<impl Backend>, cx: &mut ConstantCx) {
     while let Some(todo_item) = cx.todo.pop() {
         let (data_id, alloc) = match todo_item {

src/debuginfo/line_info.rs

@@ -59,7 +59,7 @@ fn line_program_add_file(
 ) -> FileId {
     match &file.name {
         FileName::Real(path) => {
-            let (dir_path, file_name) = split_path_dir_and_file(path);
+            let (dir_path, file_name) = split_path_dir_and_file(path.stable_name());
             let dir_name = osstr_as_utf8_bytes(dir_path.as_os_str());
             let file_name = osstr_as_utf8_bytes(file_name);
 

src/debuginfo/mod.rs

@@ -4,8 +4,6 @@ mod unwind;
 
 use crate::prelude::*;
 
-use rustc_span::FileName;
-
 use cranelift_codegen::ir::{StackSlots, ValueLabel, ValueLoc};
 use cranelift_codegen::isa::TargetIsa;
 use cranelift_codegen::ValueLocRange;
@@ -66,12 +64,7 @@ impl<'tcx> DebugContext<'tcx> {
         let (name, file_info) = match tcx.sess.local_crate_source_file.clone() {
             Some(path) => {
                 let name = path.to_string_lossy().into_owned();
-                let info = tcx.sess
-                    .source_map()
-                    .get_source_file(&FileName::Real(path))
-                    .map(|f| f.src_hash)
-                    .and_then(line_info::make_file_info);
-                (name, info)
+                (name, None)
             },
             None => (tcx.crate_name(LOCAL_CRATE).to_string(), None),
         };