Move get_tools_search_paths from FileSearch to Session

It only uses fields of FileSearch that are stored in Session too

Author: bjorn3

compiler/rustc_codegen_ssa/src/back/link.rs

@@ -637,7 +637,7 @@ fn link_dwarf_object<'a>(sess: &'a Session, executable_out_filename: &Path) {
     cmd.arg("-o");
     cmd.arg(&dwp_out_filename);
 
-    let mut new_path = sess.host_filesearch(PathKind::All).get_tools_search_paths(false);
+    let mut new_path = sess.get_tools_search_paths(false);
     if let Some(path) = env::var_os("PATH") {
         new_path.extend(env::split_paths(&path));
     }
@@ -2555,8 +2555,7 @@ fn add_gcc_ld_path(cmd: &mut dyn Linker, sess: &Session, flavor: LinkerFlavor) {
             match ld_impl {
                 LdImpl::Lld => {
                     if sess.target.lld_flavor == LldFlavor::Ld64 {
-                        let tools_path =
-                            sess.host_filesearch(PathKind::All).get_tools_search_paths(false);
+                        let tools_path = sess.get_tools_search_paths(false);
                         let ld64_exe = tools_path
                             .into_iter()
                             .map(|p| p.join("gcc-ld"))
@@ -2571,8 +2570,7 @@ fn add_gcc_ld_path(cmd: &mut dyn Linker, sess: &Session, flavor: LinkerFlavor) {
                             arg
                         });
                     } else {
-                        let tools_path =
-                            sess.host_filesearch(PathKind::All).get_tools_search_paths(false);
+                        let tools_path = sess.get_tools_search_paths(false);
                         let lld_path = tools_path
                             .into_iter()
                             .map(|p| p.join("gcc-ld"))

compiler/rustc_codegen_ssa/src/back/linker.rs

@@ -15,7 +15,6 @@ use rustc_middle::middle::dependency_format::Linkage;
 use rustc_middle::ty::TyCtxt;
 use rustc_serialize::{json, Encoder};
 use rustc_session::config::{self, CrateType, DebugInfo, LinkerPluginLto, Lto, OptLevel, Strip};
-use rustc_session::search_paths::PathKind;
 use rustc_session::Session;
 use rustc_span::symbol::Symbol;
 use rustc_target::spec::{LinkOutputKind, LinkerFlavor, LldFlavor};
@@ -101,7 +100,7 @@ pub fn get_linker<'a>(
 
     // The compiler's sysroot often has some bundled tools, so add it to the
     // PATH for the child.
-    let mut new_path = sess.host_filesearch(PathKind::All).get_tools_search_paths(self_contained);
+    let mut new_path = sess.get_tools_search_paths(self_contained);
     let mut msvc_changed_path = false;
     if sess.target.is_like_msvc {
         if let Some(ref tool) = msvc_tool {

compiler/rustc_session/src/filesearch.rs

@@ -87,18 +87,6 @@ impl<'a> FileSearch<'a> {
     pub fn search_path_dirs(&self) -> Vec<PathBuf> {
         self.search_paths().map(|sp| sp.dir.to_path_buf()).collect()
     }
-
-    /// Returns a list of directories where target-specific tool binaries are located.
-    pub fn get_tools_search_paths(&self, self_contained: bool) -> Vec<PathBuf> {
-        let rustlib_path = rustc_target::target_rustlib_path(self.sysroot, &self.triple);
-        let p = std::array::IntoIter::new([
-            Path::new(&self.sysroot),
-            Path::new(&rustlib_path),
-            Path::new("bin"),
-        ])
-        .collect::<PathBuf>();
-        if self_contained { vec![p.clone(), p.join("self-contained")] } else { vec![p] }
-    }
 }
 
 pub fn make_target_lib_path(sysroot: &Path, target_triple: &str) -> PathBuf {

compiler/rustc_session/src/session.rs

@@ -36,7 +36,7 @@ use std::fmt;
 use std::io::Write;
 use std::num::NonZeroU32;
 use std::ops::{Div, Mul};
-use std::path::PathBuf;
+use std::path::{Path, PathBuf};
 use std::str::FromStr;
 use std::sync::Arc;
 use std::time::Duration;
@@ -799,6 +799,18 @@ impl Session {
         )
     }
 
+    /// Returns a list of directories where target-specific tool binaries are located.
+    pub fn get_tools_search_paths(&self, self_contained: bool) -> Vec<PathBuf> {
+        let rustlib_path = rustc_target::target_rustlib_path(&self.sysroot, &config::host_triple());
+        let p = std::array::IntoIter::new([
+            Path::new(&self.sysroot),
+            Path::new(&rustlib_path),
+            Path::new("bin"),
+        ])
+        .collect::<PathBuf>();
+        if self_contained { vec![p.clone(), p.join("self-contained")] } else { vec![p] }
+    }
+
     pub fn init_incr_comp_session(
         &self,
         session_dir: PathBuf,