[clang-cl] Allow a colon after the /Fe option (PR46720)

Author: zmodem

clang/include/clang/Driver/Options.td

@@ -4669,6 +4669,7 @@ def _SLASH_FI : CLJoinedOrSeparate<"FI">,
 def _SLASH_Fe : CLJoined<"Fe">,
   HelpText<"Set output executable file name">,
   MetaVarName<"<file or dir/>">;
+def _SLASH_Fe_COLON : CLJoined<"Fe:">, Alias<_SLASH_Fe>;
 def _SLASH_Fi : CLCompileJoined<"Fi">,
   HelpText<"Set preprocess output file name (with /P)">,
   MetaVarName<"<file>">;

clang/test/Driver/cl-outputs.c

@@ -99,6 +99,7 @@
 // DEFAULTDLL: "-implib:cl-outputs.lib"
 
 // RUN: %clang_cl /Fefoo -### -- %s 2>&1 | FileCheck -check-prefix=FeNOEXT %s
+// RUN: %clang_cl /Fe:foo -### -- %s 2>&1 | FileCheck -check-prefix=FeNOEXT %s
 // FeNOEXT: "-out:foo.exe"
 
 // RUN: %clang_cl /Fe -### -- %s 2>&1 | FileCheck -check-prefix=FeEMPTY %s
@@ -111,6 +112,7 @@
 // FeNOEXTDLL: "-implib:foo.lib"
 
 // RUN: %clang_cl /Fefoo.ext -### -- %s 2>&1 | FileCheck -check-prefix=FeEXT %s
+// RUN: %clang_cl /Fe:foo.ext -### -- %s 2>&1 | FileCheck -check-prefix=FeEXT %s
 // FeEXT: "-out:foo.ext"
 
 // RUN: %clang_cl /LD /Fefoo.ext -### -- %s 2>&1 | FileCheck -check-prefix=FeEXTDLL %s