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

rustc_target: Further cleanup use of target options

Follow up to https://github.com/rust-lang/rust/pull/77729.

Implements items 2 and 4 from the list in https://github.com/rust-lang/rust/pull/77729#issue-500228243.

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`

1 files changed, 5 insertions, 10 deletions

diff --git a/compiler/rustc_codegen_llvm/src/llvm_util.rs b/compiler/rustc_codegen_llvm/src/llvm_util.rs
index 9c1e1b8fac0..ab70f72dc61 100644
--- a/compiler/rustc_codegen_llvm/src/llvm_util.rs
+++ b/compiler/rustc_codegen_llvm/src/llvm_util.rs
@@ -46,7 +46,7 @@ fn require_inited() {
 }
 
 unsafe fn configure_llvm(sess: &Session) {
-    let n_args = sess.opts.cg.llvm_args.len() + sess.target.options.llvm_args.len();
+    let n_args = sess.opts.cg.llvm_args.len() + sess.target.llvm_args.len();
     let mut llvm_c_strs = Vec::with_capacity(n_args + 1);
     let mut llvm_args = Vec::with_capacity(n_args + 1);
 
@@ -57,7 +57,7 @@ unsafe fn configure_llvm(sess: &Session) {
     }
 
     let cg_opts = sess.opts.cg.llvm_args.iter();
-    let tg_opts = sess.target.options.llvm_args.iter();
+    let tg_opts = sess.target.llvm_args.iter();
     let sess_args = cg_opts.chain(tg_opts);
 
     let user_specified_args: FxHashSet<_> =
@@ -84,19 +84,14 @@ unsafe fn configure_llvm(sess: &Session) {
         if !sess.opts.debugging_opts.no_generate_arange_section {
             add("-generate-arange-section", false);
         }
-        match sess
-            .opts
-            .debugging_opts
-            .merge_functions
-            .unwrap_or(sess.target.options.merge_functions)
-        {
+        match sess.opts.debugging_opts.merge_functions.unwrap_or(sess.target.merge_functions) {
             MergeFunctions::Disabled | MergeFunctions::Trampolines => {}
             MergeFunctions::Aliases => {
                 add("-mergefunc-use-aliases", false);
             }
         }
 
-        if sess.target.target_os == "emscripten" && sess.panic_strategy() == PanicStrategy::Unwind {
+        if sess.target.os == "emscripten" && sess.panic_strategy() == PanicStrategy::Unwind {
             add("-enable-emscripten-cxx-exceptions", false);
         }
 
@@ -215,7 +210,7 @@ fn handle_native(name: &str) -> &str {
 pub fn target_cpu(sess: &Session) -> &str {
     let name = match sess.opts.cg.target_cpu {
         Some(ref s) => &**s,
-        None => &*sess.target.options.cpu,
+        None => &*sess.target.cpu,
     };
 
     handle_native(name)