Add is_msvc function

src/bootstrap/src/core/build_steps/compile.rs

@@ -870,7 +870,7 @@ impl Step for Rustc {
         // is already on by default in MSVC optimized builds, which is interpreted as --icf=all:
         // https://github.com/llvm/llvm-project/blob/3329cec2f79185bafd678f310fafadba2a8c76d2/lld/COFF/Driver.cpp#L1746
         // https://github.com/rust-lang/rust/blob/f22819bcce4abaff7d1246a56eec493418f9f4ee/compiler/rustc_codegen_ssa/src/back/linker.rs#L827
-        if builder.config.use_lld && !compiler.host.contains("msvc") {
+        if builder.config.use_lld && !compiler.host.is_msvc() {
             cargo.rustflag("-Clink-args=-Wl,--icf=all");
         }
 
@@ -1089,7 +1089,7 @@ fn rustc_llvm_env(builder: &Builder<'_>, cargo: &mut Cargo, target: TargetSelect
     // found. This is to avoid the linker errors about undefined references to
     // `__llvm_profile_instrument_memop` when linking `rustc_driver`.
     let mut llvm_linker_flags = String::new();
-    if builder.config.llvm_profile_generate && target.contains("msvc") {
+    if builder.config.llvm_profile_generate && target.is_msvc() {
         if let Some(ref clang_cl_path) = builder.config.llvm_clang_cl {
             // Add clang's runtime library directory to the search path
             let clang_rt_dir = get_clang_cl_resource_dir(clang_cl_path);
@@ -1114,7 +1114,7 @@ fn rustc_llvm_env(builder: &Builder<'_>, cargo: &mut Cargo, target: TargetSelect
     // not for MSVC or macOS
     if builder.config.llvm_static_stdcpp
         && !target.contains("freebsd")
-        && !target.contains("msvc")
+        && !target.is_msvc()
         && !target.contains("apple")
         && !target.contains("solaris")
     {

src/bootstrap/src/core/build_steps/llvm.rs

@@ -98,7 +98,7 @@ pub fn prebuilt_llvm_config(
     let out_dir = builder.llvm_out(target);
 
     let mut llvm_config_ret_dir = builder.llvm_out(builder.config.build);
-    if !builder.config.build.contains("msvc") || builder.ninja() {
+    if !builder.config.build.is_msvc() || builder.ninja() {
         llvm_config_ret_dir.push("build");
     }
     llvm_config_ret_dir.push("bin");
@@ -411,7 +411,7 @@ impl Step for Llvm {
             ldflags.shared.push(" -latomic");
         }
 
-        if target.contains("msvc") {
+        if target.is_msvc() {
             cfg.define("LLVM_USE_CRT_DEBUG", "MT");
             cfg.define("LLVM_USE_CRT_RELEASE", "MT");
             cfg.define("LLVM_USE_CRT_RELWITHDEBINFO", "MT");
@@ -644,7 +644,7 @@ fn configure_cmake(
     }
 
     let sanitize_cc = |cc: &Path| {
-        if target.contains("msvc") {
+        if target.is_msvc() {
             OsString::from(cc.to_str().unwrap().replace("\\", "/"))
         } else {
             cc.as_os_str().to_owned()
@@ -654,7 +654,7 @@ fn configure_cmake(
     // MSVC with CMake uses msbuild by default which doesn't respect these
     // vars that we'd otherwise configure. In that case we just skip this
     // entirely.
-    if target.contains("msvc") && !builder.ninja() {
+    if target.is_msvc() && !builder.ninja() {
         return;
     }
 
@@ -664,7 +664,7 @@ fn configure_cmake(
     };
 
     // Handle msvc + ninja + ccache specially (this is what the bots use)
-    if target.contains("msvc") && builder.ninja() && builder.config.ccache.is_some() {
+    if target.is_msvc() && builder.ninja() && builder.config.ccache.is_some() {
         let mut wrap_cc = env::current_exe().expect("failed to get cwd");
         wrap_cc.set_file_name("sccache-plus-cl.exe");
 
@@ -768,7 +768,7 @@ fn configure_cmake(
     // For distribution we want the LLVM tools to be *statically* linked to libstdc++.
     // We also do this if the user explicitly requested static libstdc++.
     if builder.config.llvm_static_stdcpp
-        && !target.contains("msvc")
+        && !target.is_msvc()
         && !target.contains("netbsd")
         && !target.contains("solaris")
     {
@@ -874,7 +874,7 @@ impl Step for Lld {
         // when doing PGO on CI, cmake or clang-cl don't automatically link clang's
         // profiler runtime in. In that case, we need to manually ask cmake to do it, to avoid
         // linking errors, much like LLVM's cmake setup does in that situation.
-        if builder.config.llvm_profile_generate && target.contains("msvc") {
+        if builder.config.llvm_profile_generate && target.is_msvc() {
             if let Some(clang_cl_path) = builder.config.llvm_clang_cl.as_ref() {
                 // Find clang's runtime library directory and push that as a search path to the
                 // cmake linker flags.

src/bootstrap/src/core/build_steps/test.rs

@@ -1931,7 +1931,7 @@ NOTE: if you're sure you want to do this, please open an issue as to why. In the
         //
         // Note that if we encounter `PATH` we make sure to append to our own `PATH`
         // rather than stomp over it.
-        if !builder.config.dry_run() && target.contains("msvc") {
+        if !builder.config.dry_run() && target.is_msvc() {
             for &(ref k, ref v) in builder.cc.borrow()[&target].env() {
                 if k != "PATH" {
                     cmd.env(k, v);
@@ -3070,7 +3070,7 @@ impl Step for TestHelpers {
         // We may have found various cross-compilers a little differently due to our
         // extra configuration, so inform cc of these compilers. Note, though, that
         // on MSVC we still need cc's detection of env vars (ugh).
-        if !target.contains("msvc") {
+        if !target.is_msvc() {
             if let Some(ar) = builder.ar(target) {
                 cfg.archiver(ar);
             }

src/bootstrap/src/core/build_steps/tool.rs

@@ -833,7 +833,7 @@ impl<'a> Builder<'a> {
         // On MSVC a tool may invoke a C compiler (e.g., compiletest in run-make
         // mode) and that C compiler may need some extra PATH modification. Do
         // so here.
-        if compiler.host.contains("msvc") {
+        if compiler.host.is_msvc() {
             let curpaths = env::var_os("PATH").unwrap_or_default();
             let curpaths = env::split_paths(&curpaths).collect::<Vec<_>>();
             for &(ref k, ref v) in self.cc.borrow()[&compiler.host].env() {

src/bootstrap/src/core/builder.rs

@@ -1729,8 +1729,7 @@ impl<'a> Builder<'a> {
 
         let split_debuginfo_is_stable = target.contains("linux")
             || target.contains("apple")
-            || (target.contains("msvc")
+            || (target.is_msvc() && self.config.rust_split_debuginfo == SplitDebuginfo::Packed)
-                && self.config.rust_split_debuginfo == SplitDebuginfo::Packed)
             || (target.contains("windows")
                 && self.config.rust_split_debuginfo == SplitDebuginfo::Off);
 
@@ -1909,7 +1908,7 @@ impl<'a> Builder<'a> {
         // the options through environment variables that are fetched and understood by both.
         //
         // FIXME: the guard against msvc shouldn't need to be here
-        if target.contains("msvc") {
+        if target.is_msvc() {
             if let Some(ref cl) = self.config.llvm_clang_cl {
                 cargo.env("CC", cl).env("CXX", cl);
             }

src/bootstrap/src/core/config/config.rs

@@ -489,6 +489,10 @@ impl TargetSelection {
     pub fn is_synthetic(&self) -> bool {
         self.synthetic
     }
+
+    pub fn is_msvc(&self) -> bool {
+        self.contains("msvc")
+    }
 }
 
 impl fmt::Display for TargetSelection {

src/bootstrap/src/core/sanity.rs

@@ -237,7 +237,7 @@ than building it.
             }
         }
 
-        if need_cmake && target.contains("msvc") {
+        if need_cmake && target.is_msvc() {
             // There are three builds of cmake on windows: MSVC, MinGW, and
             // Cygwin. The Cygwin build does not have generators for Visual
             // Studio, so detect that here and error.

src/bootstrap/src/lib.rs

@@ -862,7 +862,7 @@ impl Build {
             }
         } else {
             let base = self.llvm_out(target).join("build");
-            let base = if !self.ninja() && target.contains("msvc") {
+            let base = if !self.ninja() && target.is_msvc() {
                 if self.config.llvm_optimize {
                     if self.config.llvm_release_debuginfo {
                         base.join("RelWithDebInfo")
@@ -1255,7 +1255,7 @@ impl Build {
             Some(self.cxx.borrow()[&target].path().into())
         } else if target != self.config.build
             && helpers::use_host_linker(target)
-            && !target.contains("msvc")
+            && !target.is_msvc()
         {
             Some(self.cc(target))
         } else if self.config.use_lld && !self.is_fuse_ld_lld(target) && self.build == target {
@@ -1268,7 +1268,7 @@ impl Build {
     // LLD is used through `-fuse-ld=lld` rather than directly.
     // Only MSVC targets use LLD directly at the moment.
     fn is_fuse_ld_lld(&self, target: TargetSelection) -> bool {
-        self.config.use_lld && !target.contains("msvc")
+        self.config.use_lld && !target.is_msvc()
     }
 
     fn lld_flags(&self, target: TargetSelection) -> impl Iterator<Item = String> {
@@ -1764,7 +1764,7 @@ to download LLVM rather than building it.
         // In these cases we automatically enable Ninja if we find it in the
         // environment.
         if !self.config.ninja_in_file
-            && self.config.build.contains("msvc")
+            && self.config.build.is_msvc()
             && cmd_finder.maybe_have("ninja").is_some()
         {
             return true;

src/bootstrap/src/utils/cc_detect.rs

@@ -39,7 +39,7 @@ fn cc2ar(cc: &Path, target: TargetSelection) -> Option<PathBuf> {
         Some(PathBuf::from(ar))
     } else if let Some(ar) = env::var_os("AR") {
         Some(PathBuf::from(ar))
-    } else if target.contains("msvc") {
+    } else if target.is_msvc() {
         None
     } else if target.contains("musl") {
         Some(PathBuf::from("ar"))
@@ -78,7 +78,7 @@ fn new_cc_build(build: &Build, target: TargetSelection) -> cc::Build {
             cfg.static_crt(a);
         }
         None => {
-            if target.contains("msvc") {
+            if target.is_msvc() {
                 cfg.static_crt(true);
             }
             if target.contains("musl") {