remove goma support from clang (#93942)

goma is deprecated and not maintained anymore.

https://chromium.googlesource.com/infra/goma/client/

Author: atetubou

clang/lib/Tooling/JSONCompilationDatabase.cpp

@@ -260,7 +260,7 @@ static llvm::StringRef stripExecutableExtension(llvm::StringRef Name) {
   return Name;
 }
 
-// There are compiler-wrappers (ccache, distcc, gomacc) that take the "real"
+// There are compiler-wrappers (ccache, distcc) that take the "real"
 // compiler as an argument, e.g. distcc gcc -O3 foo.c.
 // These end up in compile_commands.json when people set CC="distcc gcc".
 // Clang's driver doesn't understand this, so we need to unwrap.
@@ -269,8 +269,7 @@ static bool unwrapCommand(std::vector<std::string> &Args) {
     return false;
   StringRef Wrapper =
       stripExecutableExtension(llvm::sys::path::filename(Args.front()));
-  if (Wrapper == "distcc" || Wrapper == "gomacc" || Wrapper == "ccache" ||
-      Wrapper == "sccache") {
+  if (Wrapper == "distcc" || Wrapper == "ccache" || Wrapper == "sccache") {
     // Most of these wrappers support being invoked 3 ways:
     // `distcc g++ file.c` This is the mode we're trying to match.
     //                     We need to drop `distcc`.

clang/unittests/Tooling/CompilationDatabaseTest.cpp

@@ -402,7 +402,6 @@ TEST(findCompileArgsInJsonDatabase, FindsEntry) {
 TEST(findCompileArgsInJsonDatabase, ParsesCompilerWrappers) {
   std::vector<std::pair<std::string, std::string>> Cases = {
       {"distcc gcc foo.c", "gcc foo.c"},
-      {"gomacc clang++ foo.c", "clang++ foo.c"},
       {"sccache clang++ foo.c", "clang++ foo.c"},
       {"ccache gcc foo.c", "gcc foo.c"},
       {"ccache.exe gcc foo.c", "gcc foo.c"},