Subzero: Fix Phi lowering.

src/llvm2ice.cpp

 //===- subzero/src/llvm2ice.cpp - Driver for testing ----------------------===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 // This file defines a driver that uses LLVM capabilities to parse a
@@ skipping 79 matching lines @@
 static cl::opt<bool>
 DisableTranslation("notranslate", cl::desc("Disable Subzero translation"));
 
 static cl::opt<bool> SubzeroTimingEnabled(
     "timing", cl::desc("Enable breakdown timing of Subzero translation"));
 
 static cl::opt<bool>
     DisableGlobals("disable-globals",
                    cl::desc("Disable global initializer translation"));
 
+// This is currently unused, and is a placeholder for lit tests.
+static cl::opt<bool>
+    DisablePhiEdgeSplit("no-phi-edge-split",
+                        cl::desc("Disable edge splitting for Phi lowering"));
+
 static cl::opt<NaClFileFormat> InputFileFormat(
     "bitcode-format", cl::desc("Define format of input file:"),
     cl::values(clEnumValN(LLVMFormat, "llvm", "LLVM file (default)"),
                clEnumValN(PNaClFormat, "pnacl", "PNaCl bitcode file"),
                clEnumValEnd),
     cl::init(LLVMFormat));
 
 static cl::opt<bool>
 BuildOnRead("build-on-read",
             cl::desc("Build ICE instructions when reading bitcode"),
@@ skipping 51 matching lines @@
     if (!Mod) {
       Err.print(argv[0], errs());
       return 1;
     }
 
     Ice::Converter Converter(Mod, &Ctx, Flags);
     Converter.convertToIce();
     return Converter.getErrorStatus();
   }
 }