Allow conditional lit tests in Subzero, based on build flags.

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 143 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 "
+                           "this executable."),
+    cl::init(false));
+
 static int GetReturnValue(int Val) {
   if (AlwaysExitSuccess)
     return 0;
   return Val;
 }
 
+static bool GenerateBuildAttributes(raw_os_ostream &Stream) {
+  if (!GenerateBuildAtts)
+    return false;
+
+  // TODO(kschimpf): Conditionalize this once we have multiple targets.
+  Stream << "x86-32\n";
+
+#if defined NO_TEXT_ASM && !defined ALLOW_TEXT_ASM
+  Stream << "no_text_asm\n";
+#elif !defined NO_DUMP && defined ALLOW_TEXT_ASM

[jvoung (off chromium), 2014/10/21 19:12:00]

NO_TEXT_ASM instead of NO_DUMP?

Maybe there can be a macro that systematically emits these checks and prints to
the stream?

[Karl, 2014/10/21 21:14:18]

After simplifying the define flags (see Makefile.standalone), I was able to more
systematically handle the generation/verification of build attributes.

+  Stream << "allow_text_asm\n";
+#elif defined NO_TEXT_ASM
+#error Can't define both NO_TEXT_ASM and ALLOW_TEXT_ASM
+#else
+#error Must define either NO_TEXT_ASM or ALLOW_TEXT_ASM
+#endif
+
+#if defined NO_DUMP && !defined ALLOW_DUMP
+  Stream << "no_dump\n";
+#elif !defined NO_DUMP && defined ALLOW_DUMP
+  Stream << "allow_dump\n";
+#elif defined DO_DUMP

[jvoung (off chromium), 2014/10/21 19:12:00]

DO_DUMP -> NO_DUMP?

[Karl, 2014/10/21 21:14:18]

Done.

+#error Can't define both NO_DUMP and ALLOW_DUMP
+#else
+#error Must define either NO_DUMP or ALLOW_DUMP
+#endif
+
+#if defined NO_LLVM_CL && !defined ALLOW_LLVM_CL
+  Stream << "no_llvm_cl\n";
+#elif !defined NO_LLVM_CL && defined ALLOW_LLVM_CL
+  Stream << "allow_llvm_cl\n";
+#elif defined NO_LLVM_CL
+#error Can't define both NO_LLVM_CL and ALLOW_LLVM_CL
+#else
+#error Must define either NO_LLVM_CL or ALLOW_LLVM_CL
+#endif
+
+#if defined NO_LLVM_IR && !defined ALLOW_LLVM_IR
+  Stream << "no_llvm_ir\n";
+#elif !defined NO_LLMV_IR && defined ALLOW_LLVM_IR
+  Stream << "allow_llvm_ir\n";
+#elif defined NO_LLVM_IR
+#error Can't define both NO_LLVM_IR and ALLOW_LLVM_IR
+#else
+#error Must define either NO_LLVM_IR or ALLOW_LLVM_IR
+#endif
+
+
+#if defined NO_LLVM_IR_AS_INPUT && !defined ALLOW_LLVM_IR_AS_INPUT
+  Stream << "no_llvm_ir_as_input\n";
+#elif !defined NO_LLMV_IR_AS_INPUT && defined ALLOW_LLVM_IR_AS_INPUT
+  Stream << "allow_llvm_ir_as_input\n";
+#elif defined NO_LLVM_IR_AS_INPUT
+#error Can't define both NO_LLVM_IR_AS_INPUT and ALLOW_LLVM_IR_AS_INPUT
+#else
+#error Must define either NO_LLVM_IR_AS_INPUT or ALLOW_LLVM_IR_AS_INPUT
+#endif
+
+  return true;
+}
+
 int main(int argc, char **argv) {
 
   cl::ParseCommandLineOptions(argc, argv);
 
   Ice::VerboseMask VMask = Ice::IceV_None;
   for (unsigned i = 0; i != VerboseList.size(); ++i)
     VMask |= VerboseList[i];
 
   std::ofstream Ofs;
   if (OutputFilename != "-") {
     Ofs.open(OutputFilename.c_str(), std::ofstream::out);
   }
   raw_os_ostream *Os =
       new raw_os_ostream(OutputFilename == "-" ? std::cout : Ofs);
   Os->SetUnbuffered();
+
+

[jvoung (off chromium), 2014/10/21 19:12:00]

could squash it to one newline instead of two

[Karl, 2014/10/21 21:14:18]

Done.

+  if (GenerateBuildAttributes(*Os))
+    return GetReturnValue(0);
+
   std::ofstream Lfs;
   if (LogFilename != "-") {
     Lfs.open(LogFilename.c_str(), std::ofstream::out);
   }
   raw_os_ostream *Ls = new raw_os_ostream(LogFilename == "-" ? std::cout : Lfs);
   Ls->SetUnbuffered();
 
   Ice::ClFlags Flags;
   Flags.DisableInternal = DisableInternal;
   Flags.SubzeroTimingEnabled = SubzeroTimingEnabled;
@@ skipping 38 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);
 }