CommandFlags.h/llc: Move StopAfter/StartBefore options to llc.

Move those two options to llc:

The options in CommandFlags.h are shared by dsymutil, gold, llc,
llvm-dwp, llvm-lto, llvm-mc, lto, opt.

-stop-after/-start-after only affect codegen passes however only gold and llc
actually create codegen passes and I believe these flags to be only
useful for users of llc. For the other tools they are just highly
confusing: -stop-after claims to "Stop compilation after a specific
pass" which is not true in the context of the "opt" tool.

Differential Revision: https://reviews.llvm.org/D23050

llvm-svn: 277551

llvm/include/llvm/CodeGen/CommandFlags.h

@@ -221,15 +221,6 @@ UseCtors("use-ctors",
              cl::desc("Use .ctors instead of .init_array."),
              cl::init(false));
 
-cl::opt<std::string> StopAfter("stop-after",
-                            cl::desc("Stop compilation after a specific pass"),
-                            cl::value_desc("pass-name"),
-                                      cl::init(""));
-cl::opt<std::string> StartAfter("start-after",
-                          cl::desc("Resume compilation after a specific pass"),
-                          cl::value_desc("pass-name"),
-                          cl::init(""));
-
 cl::opt<bool> DataSections("data-sections",
                            cl::desc("Emit data into separate sections"),
                            cl::init(false));

llvm/tools/llc/llc.cpp

@@ -118,6 +118,14 @@ static cl::opt<bool> DiscardValueNames(
     cl::desc("Discard names from Value (other than GlobalValue)."),
     cl::init(false), cl::Hidden);
 
+static cl::opt<std::string> StopAfter("stop-after",
+    cl::desc("Stop compilation after a specific pass"),
+    cl::value_desc("pass-name"), cl::init(""));
+
+static cl::opt<std::string> StartAfter("start-after",
+    cl::desc("Resume compilation after a specific pass"),
+    cl::value_desc("pass-name"), cl::init(""));
+
 namespace {
 static ManagedStatic<std::vector<std::string>> RunPassNames;