Subzero: Allow delaying Phi lowering until after register allocation.

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 151 matching lines @@
                            cl::desc("Use integrated assembler (default yes)"),
                            cl::init(true));
 
 static cl::alias UseIas("ias", cl::desc("Alias for -integrated-as"),
                         cl::NotHidden, cl::aliasopt(UseIntegratedAssembler));
 
 static cl::opt<bool> AlwaysExitSuccess(
     "exit-success", cl::desc("Exit with success status, even if errors found"),
     cl::init(false));
 
-static cl::opt<bool> GenerateBuildAtts(
-    "build-atts", cl::desc("Generate list of build attributes associated with "
+static cl::opt<bool>
+GenerateBuildAtts("build-atts",
+                  cl::desc("Generate list of build attributes associated with "
                            "this executable."),
-    cl::init(false));
+                  cl::init(false));
 
 static int GetReturnValue(int Val) {
   if (AlwaysExitSuccess)
     return 0;
   return Val;
 }
 
 static struct {
   const char *FlagName;
   int FlagValue;
-} ConditionalBuildAttributes[] = {
-  { "text_asm", ALLOW_TEXT_ASM },
-  { "dump", ALLOW_DUMP },
-  { "llvm_cl", ALLOW_LLVM_CL },
-  { "llvm_ir", ALLOW_LLVM_IR },
-  { "llvm_ir_as_input", ALLOW_LLVM_IR_AS_INPUT }
-};
+} ConditionalBuildAttributes[] = { { "text_asm", ALLOW_TEXT_ASM },
+                                   { "dump", ALLOW_DUMP },
+                                   { "llvm_cl", ALLOW_LLVM_CL },
+                                   { "llvm_ir", ALLOW_LLVM_IR },
+                                   { "llvm_ir_as_input",
+                                     ALLOW_LLVM_IR_AS_INPUT } };
 
 // Validates values of build attributes. Prints them to Stream if
 // Stream is non-null.
 static void ValidateAndGenerateBuildAttributes(raw_os_ostream *Stream) {
 
   if (Stream)
     *Stream << TargetArch << "\n";
 
   for (size_t i = 0; i < array_lengthof(ConditionalBuildAttributes); ++i) {
     switch (ConditionalBuildAttributes[i].FlagValue) {
@@ skipping 95 matching lines @@
   if (TimeEachFunction) {
     const bool DumpCumulative = false;
     Ctx.dumpTimers(Ice::GlobalContext::TSK_Funcs, DumpCumulative);
   }
   if (SubzeroTimingEnabled)
     Ctx.dumpTimers();
   const bool FinalStats = true;
   Ctx.dumpStats("_FINAL_", FinalStats);
   return GetReturnValue(ErrorStatus);
 }