Remove #[macro_use] extern crate tracing from rustc_codegen_ssa.

Author: nnethercote

Diff for: compiler/rustc_codegen_ssa/src/assert_module_sources.rs

@@ -37,6 +37,7 @@ use rustc_span::{Span, Symbol};
 use std::borrow::Cow;
 use std::fmt;
 use thin_vec::ThinVec;
+use tracing::debug;
 
 #[allow(missing_docs)]
 pub fn assert_module_sources(tcx: TyCtxt<'_>, set_reuse: &dyn Fn(&mut CguReuseTracker)) {

Diff for: compiler/rustc_codegen_ssa/src/back/link.rs

@@ -52,6 +52,7 @@ use std::ops::Deref;
 use std::path::{Path, PathBuf};
 use std::process::{ExitStatus, Output, Stdio};
 use std::{env, fmt, fs, io, mem, str};
+use tracing::{debug, info, warn};
 
 pub fn ensure_removed(dcx: &DiagCtxt, path: &Path) {
     if let Err(e) = fs::remove_file(path) {

Diff for: compiler/rustc_codegen_ssa/src/back/linker.rs

@@ -22,6 +22,7 @@ use rustc_session::Session;
 use rustc_target::spec::{Cc, LinkOutputKind, LinkerFlavor, Lld};
 
 use cc::windows_registry;
+use tracing::{debug, warn};
 
 /// Disables non-English messages from localized linkers.
 /// Such messages may cause issues with text encoding on Windows (#35785)

Diff for: compiler/rustc_codegen_ssa/src/back/rpath.rs

@@ -3,6 +3,7 @@ use rustc_data_structures::fx::FxHashSet;
 use rustc_fs_util::try_canonicalize;
 use std::ffi::OsString;
 use std::path::{Path, PathBuf};
+use tracing::debug;
 
 pub struct RPathConfig<'a> {
     pub libs: &'a [&'a Path],

Diff for: compiler/rustc_codegen_ssa/src/back/symbol_export.rs

@@ -18,6 +18,7 @@ use rustc_middle::ty::{GenericArgKind, GenericArgsRef};
 use rustc_middle::util::Providers;
 use rustc_session::config::{CrateType, OomStrategy};
 use rustc_target::spec::{SanitizerSet, TlsModel};
+use tracing::debug;
 
 pub fn threshold(tcx: TyCtxt<'_>) -> SymbolExportLevel {
     crates_export_threshold(tcx.crate_types())

Diff for: compiler/rustc_codegen_ssa/src/back/write.rs

@@ -49,6 +49,7 @@ use std::str;
 use std::sync::mpsc::{channel, Receiver, Sender};
 use std::sync::Arc;
 use std::thread;
+use tracing::debug;
 
 const PRE_LTO_BC_EXT: &str = "pre-lto.bc";
 

Diff for: compiler/rustc_codegen_ssa/src/base.rs

@@ -45,6 +45,7 @@ use std::collections::BTreeSet;
 use std::time::{Duration, Instant};
 
 use itertools::Itertools;
+use tracing::{debug, info};
 
 pub fn bin_op_to_icmp_predicate(op: BinOp, signed: bool) -> IntPredicate {
     match op {

Diff for: compiler/rustc_codegen_ssa/src/lib.rs

@@ -15,9 +15,6 @@
 //! The backend-agnostic functions of this crate use functions defined in various traits that
 //! have to be implemented by each backend.
 
-#[macro_use]
-extern crate tracing;
-
 use rustc_ast as ast;
 use rustc_data_structures::fx::FxHashSet;
 use rustc_data_structures::fx::FxIndexMap;

Diff for: compiler/rustc_codegen_ssa/src/meth.rs

@@ -5,6 +5,7 @@ use rustc_middle::ty::{self, GenericArgKind, Ty};
 use rustc_session::config::Lto;
 use rustc_symbol_mangling::typeid_for_trait_ref;
 use rustc_target::abi::call::FnAbi;
+use tracing::{debug, instrument};
 
 #[derive(Copy, Clone, Debug)]
 pub struct VirtualIndex(u64);

Diff for: compiler/rustc_codegen_ssa/src/mir/analyze.rs

@@ -11,6 +11,7 @@ use rustc_middle::mir::visit::{MutatingUseContext, NonMutatingUseContext, PlaceC
 use rustc_middle::mir::{self, DefLocation, Location, TerminatorKind};
 use rustc_middle::ty::layout::{HasTyCtxt, LayoutOf};
 use rustc_middle::{bug, span_bug};
+use tracing::debug;
 
 pub fn non_ssa_locals<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>>(
     fx: &FunctionCx<'a, 'tcx, Bx>,

Diff for: compiler/rustc_codegen_ssa/src/mir/block.rs

@@ -24,6 +24,7 @@ use rustc_span::{source_map::Spanned, sym, Span};
 use rustc_target::abi::call::{ArgAbi, FnAbi, PassMode, Reg};
 use rustc_target::abi::{self, HasDataLayout, WrappingRange};
 use rustc_target::spec::abi::Abi;
+use tracing::{debug, info};
 
 use std::cmp;
 

Diff for: compiler/rustc_codegen_ssa/src/mir/locals.rs

@@ -7,6 +7,8 @@ use rustc_index::IndexVec;
 use rustc_middle::mir;
 use rustc_middle::ty::print::with_no_trimmed_paths;
 use std::ops::{Index, IndexMut};
+use tracing::{debug, warn};
+
 pub(super) struct Locals<'tcx, V> {
     values: IndexVec<mir::Local, LocalRef<'tcx, V>>,
 }

Diff for: compiler/rustc_codegen_ssa/src/mir/mod.rs

@@ -10,6 +10,7 @@ use rustc_middle::ty::layout::{FnAbiOf, HasTyCtxt, TyAndLayout};
 use rustc_middle::ty::{self, Instance, Ty, TyCtxt, TypeFoldable, TypeVisitableExt};
 use rustc_middle::{bug, span_bug};
 use rustc_target::abi::call::{FnAbi, PassMode};
+use tracing::{debug, instrument};
 
 use std::iter;
 

Diff for: compiler/rustc_codegen_ssa/src/mir/operand.rs

@@ -16,6 +16,7 @@ use std::fmt;
 
 use arrayvec::ArrayVec;
 use either::Either;
+use tracing::debug;
 
 /// The representation of a Rust value. The enum variant is in fact
 /// uniquely determined by the value's type, but is kept as a

Diff for: compiler/rustc_codegen_ssa/src/mir/place.rs

@@ -12,6 +12,7 @@ use rustc_middle::ty::layout::{HasTyCtxt, LayoutOf, TyAndLayout};
 use rustc_middle::ty::{self, Ty};
 use rustc_target::abi::{Align, FieldsShape, Int, Pointer, Size, TagEncoding};
 use rustc_target::abi::{VariantIdx, Variants};
+use tracing::{debug, instrument};
 
 /// The location and extra runtime properties of the place.
 ///
@@ -159,9 +160,9 @@ impl<'a, 'tcx, V: CodegenObject> PlaceRef<'tcx, V> {
                 bx.inbounds_ptradd(self.val.llval, bx.const_usize(offset.bytes()))
             };
             let val = PlaceValue {
-                    llval,
+                llval,
                 llextra: if bx.cx().type_has_metadata(field.ty) { self.val.llextra } else { None },
-                    align: effective_field_align,
+                align: effective_field_align,
             };
             val.with_type(field)
         };
@@ -408,9 +409,9 @@ impl<'a, 'tcx, V: CodegenObject> PlaceRef<'tcx, V> {
         };
 
         let llval = bx.inbounds_gep(
-                    bx.cx().backend_type(self.layout),
-                    self.val.llval,
-                    &[bx.cx().const_usize(0), llindex],
+            bx.cx().backend_type(self.layout),
+            self.val.llval,
+            &[bx.cx().const_usize(0), llindex],
         );
         let align = self.val.align.restrict_for_offset(offset);
         PlaceValue::new_sized(llval, align).with_type(layout)

Diff for: compiler/rustc_codegen_ssa/src/mir/rvalue.rs

@@ -17,6 +17,7 @@ use rustc_span::{Span, DUMMY_SP};
 use rustc_target::abi::{self, FieldIdx, FIRST_VARIANT};
 
 use arrayvec::ArrayVec;
+use tracing::{debug, instrument};
 
 impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> {
     #[instrument(level = "trace", skip(self, bx))]

Diff for: compiler/rustc_codegen_ssa/src/mir/statement.rs

@@ -1,6 +1,7 @@
 use rustc_middle::mir::{self, NonDivergingIntrinsic};
 use rustc_middle::span_bug;
 use rustc_session::config::OptLevel;
+use tracing::instrument;
 
 use super::FunctionCx;
 use super::LocalRef;

Diff for: compiler/rustc_codegen_ssa/src/mono_item.rs

@@ -9,6 +9,7 @@ use rustc_middle::span_bug;
 use rustc_middle::ty;
 use rustc_middle::ty::layout::{HasTyCtxt, LayoutOf};
 use rustc_middle::ty::Instance;
+use tracing::debug;
 
 pub trait MonoItemExt<'a, 'tcx> {
     fn define<Bx: BuilderMethods<'a, 'tcx>>(&self, cx: &'a Bx::CodegenCx);

Diff for: compiler/rustc_codegen_ssa/src/size_of_val.rs

@@ -9,6 +9,7 @@ use rustc_middle::bug;
 use rustc_middle::ty::print::{with_no_trimmed_paths, with_no_visible_paths};
 use rustc_middle::ty::{self, Ty};
 use rustc_target::abi::WrappingRange;
+use tracing::{debug, trace};
 
 pub fn size_and_align_of_dst<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>>(
     bx: &mut Bx,