compiletest: Remove unused llvm-cxxflags option

src/bootstrap/test.rs

@@ -1149,7 +1149,6 @@ impl Step for Compiletest {
             // requires that a C++ compiler was configured which isn't always the case.
             if !builder.config.dry_run && suite == "run-make-fulldeps" {
                 let llvm_components = output(Command::new(&llvm_config).arg("--components"));
-                let llvm_cxxflags = output(Command::new(&llvm_config).arg("--cxxflags"));
                 cmd.arg("--cc")
                     .arg(builder.cc(target))
                     .arg("--cxx")
@@ -1157,9 +1156,7 @@ impl Step for Compiletest {
                     .arg("--cflags")
                     .arg(builder.cflags(target, GitRepo::Rustc).join(" "))
                     .arg("--llvm-components")
-                    .arg(llvm_components.trim())
+                    .arg(llvm_components.trim());
-                    .arg("--llvm-cxxflags")
-                    .arg(llvm_cxxflags.trim());
                 if let Some(ar) = builder.ar(target) {
                     cmd.arg("--ar").arg(ar);
                 }
@@ -1197,8 +1194,6 @@ impl Step for Compiletest {
                 .arg("--cflags")
                 .arg("")
                 .arg("--llvm-components")
-                .arg("")
-                .arg("--llvm-cxxflags")
                 .arg("");
         }
 

src/tools/compiletest/src/common.rs

@@ -319,7 +319,6 @@ pub struct Config {
     pub ar: String,
     pub linker: Option<String>,
     pub llvm_components: String,
-    pub llvm_cxxflags: String,
 
     /// Path to a NodeJS executable. Used for JS doctests, emscripten and WASM tests
     pub nodejs: Option<String>,

src/tools/compiletest/src/header/tests.rs

@@ -45,7 +45,6 @@ fn config() -> Config {
         "--cxx=c++",
         "--cflags=",
         "--llvm-components=",
-        "--llvm-cxxflags=",
         "--android-cross-path=",
         "--target=x86_64-unknown-linux-gnu",
     ];

src/tools/compiletest/src/main.rs

@@ -116,7 +116,6 @@ pub fn parse_config(args: Vec<String>) -> Config {
         .optopt("", "ar", "path to an archiver", "PATH")
         .optopt("", "linker", "path to a linker", "PATH")
         .reqopt("", "llvm-components", "list of LLVM components built in", "LIST")
-        .reqopt("", "llvm-cxxflags", "C++ flags for LLVM", "FLAGS")
         .optopt("", "llvm-bin-dir", "Path to LLVM's `bin` directory", "PATH")
         .optopt("", "nodejs", "the name of nodejs", "PATH")
         .optopt("", "remote-test-client", "path to the remote test client", "PATH")
@@ -240,7 +239,6 @@ pub fn parse_config(args: Vec<String>) -> Config {
         ar: matches.opt_str("ar").unwrap_or("ar".into()),
         linker: matches.opt_str("linker"),
         llvm_components: matches.opt_str("llvm-components").unwrap(),
-        llvm_cxxflags: matches.opt_str("llvm-cxxflags").unwrap(),
         nodejs: matches.opt_str("nodejs"),
     }
 }

src/tools/compiletest/src/runtest.rs

@@ -2651,7 +2651,6 @@ impl<'test> TestCx<'test> {
             .env("HOST_RPATH_DIR", cwd.join(&self.config.compile_lib_path))
             .env("TARGET_RPATH_DIR", cwd.join(&self.config.run_lib_path))
             .env("LLVM_COMPONENTS", &self.config.llvm_components)
-            .env("LLVM_CXXFLAGS", &self.config.llvm_cxxflags)
             // We for sure don't want these tests to run in parallel, so make
             // sure they don't have access to these vars if we run via `make`
             // at the top level