Rollup merge of #78875 - petrochenkov:cleantarg, r=Mark-Simulacrum

rustc_target: Further cleanup use of target options

Follow up to #77729.

Implements items 2 and 4 from the list in #77729 (comment).

The first commit collapses uses of `target.options.foo` into `target.foo`.

The second commit renames some target options to avoid tautology:
`target.target_endian` -> `target.endian`
`target.target_c_int_width` -> `target.c_int_width`
`target.target_os` -> `target.os`
`target.target_env` -> `target.env`
`target.target_vendor` -> `target.vendor`
`target.target_family` -> `target.os_family`
`target.target_mcount` -> `target.mcount`

r? `@Mark-Simulacrum`

Author: jonas-schievink

compiler/rustc_ast_passes/src/ast_validation.rs

@@ -796,7 +796,7 @@ impl<'a> Visitor<'a> for AstValidator<'a> {
 
     fn visit_expr(&mut self, expr: &'a Expr) {
         match &expr.kind {
-            ExprKind::LlvmInlineAsm(..) if !self.session.target.options.allow_asm => {
+            ExprKind::LlvmInlineAsm(..) if !self.session.target.allow_asm => {
                 struct_span_err!(
                     self.session,
                     expr.span,

compiler/rustc_builtin_macros/src/test_harness.rs

@@ -37,7 +37,7 @@ struct TestCtxt<'a> {
 pub fn inject(sess: &Session, resolver: &mut dyn ResolverExpand, krate: &mut ast::Crate) {
     let span_diagnostic = sess.diagnostic();
     let panic_strategy = sess.panic_strategy();
-    let platform_panic_strategy = sess.target.options.panic_strategy;
+    let platform_panic_strategy = sess.target.panic_strategy;
 
     // Check for #![reexport_test_harness_main = "some_name"] which gives the
     // main test function the name `some_name` without hygiene. This needs to be

compiler/rustc_codegen_cranelift/src/archive.rs

@@ -63,9 +63,9 @@ impl<'a> ArchiveBuilder<'a> for ArArchiveBuilder<'a> {
             sess,
             dst: output.to_path_buf(),
             lib_search_paths: archive_search_paths(sess),
-            use_gnu_style_archive: sess.target.options.archive_format == "gnu",
+            use_gnu_style_archive: sess.target.archive_format == "gnu",
             // FIXME fix builtin ranlib on macOS
-            no_builtin_ranlib: sess.target.options.is_like_osx,
+            no_builtin_ranlib: sess.target.is_like_osx,
 
             src_archives,
             entries,

compiler/rustc_codegen_cranelift/src/debuginfo/mod.rs

@@ -50,7 +50,7 @@ impl<'tcx> DebugContext<'tcx> {
             // TODO: this should be configurable
             // macOS doesn't seem to support DWARF > 3
             // 5 version is required for md5 file hash
-            version: if tcx.sess.target.options.is_like_osx {
+            version: if tcx.sess.target.is_like_osx {
                 3
             } else {
                 // FIXME change to version 5 once the gdb and lldb shipping with the latest debian

compiler/rustc_codegen_cranelift/src/driver/aot.rs

@@ -320,8 +320,8 @@ fn codegen_global_asm(tcx: TyCtxt<'_>, cgu_name: &str, global_asm: &str) {
     }
 
     if cfg!(not(feature = "inline_asm"))
-        || tcx.sess.target.options.is_like_osx
-        || tcx.sess.target.options.is_like_windows
+        || tcx.sess.target.is_like_osx
+        || tcx.sess.target.is_like_windows
     {
         if global_asm.contains("__rust_probestack") {
             return;

compiler/rustc_codegen_cranelift/src/metadata.rs

@@ -101,7 +101,7 @@ pub(crate) fn write_metadata<P: WriteMetadata>(
     product.add_rustc_section(
         rustc_middle::middle::exported_symbols::metadata_symbol_name(tcx),
         compressed,
-        tcx.sess.target.options.is_like_osx,
+        tcx.sess.target.is_like_osx,
     );
 
     metadata

compiler/rustc_codegen_cranelift/src/toolchain.rs

@@ -91,7 +91,7 @@ fn linker_and_flavor(sess: &Session) -> (PathBuf, LinkerFlavor) {
                 } else if stem == "link" || stem == "lld-link" {
                     LinkerFlavor::Msvc
                 } else if stem == "lld" || stem == "rust-lld" {
-                    LinkerFlavor::Lld(sess.target.options.lld_flavor)
+                    LinkerFlavor::Lld(sess.target.lld_flavor)
                 } else {
                     // fall back to the value in the target spec
                     sess.target.linker_flavor
@@ -115,7 +115,7 @@ fn linker_and_flavor(sess: &Session) -> (PathBuf, LinkerFlavor) {
 
     if let Some(ret) = infer_from(
         sess,
-        sess.target.options.linker.clone().map(PathBuf::from),
+        sess.target.linker.clone().map(PathBuf::from),
         Some(sess.target.linker_flavor),
     ) {
         return ret;

compiler/rustc_codegen_llvm/src/allocator.rs

@@ -57,7 +57,7 @@ pub(crate) unsafe fn codegen(
         let name = format!("__rust_{}", method.name);
         let llfn = llvm::LLVMRustGetOrInsertFunction(llmod, name.as_ptr().cast(), name.len(), ty);
 
-        if tcx.sess.target.options.default_hidden_visibility {
+        if tcx.sess.target.default_hidden_visibility {
             llvm::LLVMRustSetVisibility(llfn, llvm::Visibility::Hidden);
         }
         if tcx.sess.must_emit_unwind_tables() {
@@ -98,7 +98,7 @@ pub(crate) unsafe fn codegen(
     // -> ! DIFlagNoReturn
     llvm::Attribute::NoReturn.apply_llfn(llvm::AttributePlace::Function, llfn);
 
-    if tcx.sess.target.options.default_hidden_visibility {
+    if tcx.sess.target.default_hidden_visibility {
         llvm::LLVMRustSetVisibility(llfn, llvm::Visibility::Hidden);
     }
     if tcx.sess.must_emit_unwind_tables() {

compiler/rustc_codegen_llvm/src/attributes.rs

@@ -90,8 +90,7 @@ fn set_instrument_function(cx: &CodegenCx<'ll, '_>, llfn: &'ll Value) {
 
         // The function name varies on platforms.
         // See test/CodeGen/mcount.c in clang.
-        let mcount_name =
-            CString::new(cx.sess().target.options.target_mcount.as_str().as_bytes()).unwrap();
+        let mcount_name = CString::new(cx.sess().target.mcount.as_str().as_bytes()).unwrap();
 
         llvm::AddFunctionAttrStringValue(
             llfn,
@@ -105,7 +104,7 @@ fn set_instrument_function(cx: &CodegenCx<'ll, '_>, llfn: &'ll Value) {
 fn set_probestack(cx: &CodegenCx<'ll, '_>, llfn: &'ll Value) {
     // Only use stack probes if the target specification indicates that we
     // should be using stack probes
-    if !cx.sess().target.options.stack_probes {
+    if !cx.sess().target.stack_probes {
         return;
     }
 
@@ -174,7 +173,6 @@ pub fn llvm_target_features(sess: &Session) -> impl Iterator<Item = &str> {
         .split(',')
         .filter(|f| !RUSTC_SPECIFIC_FEATURES.iter().any(|s| f.contains(s)));
     sess.target
-        .options
         .features
         .split(',')
         .chain(cmdline)

compiler/rustc_codegen_llvm/src/back/archive.rs

@@ -206,7 +206,7 @@ impl<'a> LlvmArchiveBuilder<'a> {
     }
 
     fn llvm_archive_kind(&self) -> Result<ArchiveKind, &str> {
-        let kind = &*self.config.sess.target.options.archive_format;
+        let kind = &*self.config.sess.target.archive_format;
         kind.parse().map_err(|_| kind)
     }