Revert "Fix locking for printing error messages."

This reverts commit 187b3dfab5cca45e2af192bf7f5db09bcc156314.

A unit test fails when it shouldn't.

BUG= https://code.google.com/p/nativeclient/issues/detail?id=4138

Review URL: https://codereview.chromium.org/1071423003

src/IceClFlags.cpp

diff --git a/src/IceClFlags.cpp b/src/IceClFlags.cpp
index fda4e06..9e24665 100644
--- a/src/IceClFlags.cpp
+++ b/src/IceClFlags.cpp
@@ -245,43 +245,6 @@
   AppName = IceString(argv[0]);
 }
 
-void ClFlags::resetClFlags(ClFlags &OutFlags) {
-  // bool fields
-  OutFlags.AllowErrorRecovery = false;
-  OutFlags.AllowUninitializedGlobals = false;
-  OutFlags.DataSections = false;
-  OutFlags.DecorateAsm = false;
-  OutFlags.DisableInternal = false;
-  OutFlags.DisableIRGeneration = false;
-  OutFlags.DisableTranslation = false;
-  OutFlags.DumpStats = false;
-  OutFlags.FunctionSections = false;
-  OutFlags.GenerateUnitTestMessages = false;
-  OutFlags.PhiEdgeSplit = false;
-  OutFlags.RandomNopInsertion = false;
-  OutFlags.RandomRegAlloc = false;
-  OutFlags.SubzeroTimingEnabled = false;
-  OutFlags.TimeEachFunction = false;
-  OutFlags.UseSandboxing = false;
-  // Enum and integer fields.
-  OutFlags.Opt = Opt_m1;
-  OutFlags.OutFileType = FT_Iasm;
-  OutFlags.RandomMaxNopsPerInstruction = 0;
-  OutFlags.RandomNopProbabilityAsPercentage = 0;
-  OutFlags.TArch = TargetArch_NUM;
-  OutFlags.VMask = IceV_None;
-  // IceString fields.
-  OutFlags.DefaultFunctionPrefix = "";
-  OutFlags.DefaultGlobalPrefix = "";
-  OutFlags.TestPrefix = "";
-  OutFlags.TimingFocusOn = "";
-  OutFlags.TranslateOnly = "";
-  OutFlags.VerboseFocusOn = "";
-  // size_t and 64-bit fields.
-  OutFlags.NumTranslationThreads = 0;
-  OutFlags.RandomSeed = 0;
-}
-
 void ClFlags::getParsedClFlags(ClFlags &OutFlags) {
   if (::DisableIRGeneration)
     ::DisableTranslation = true;

src/IceClFlags.h

diff --git a/src/IceClFlags.h b/src/IceClFlags.h
index c89e695..0762002 100644
--- a/src/IceClFlags.h
+++ b/src/IceClFlags.h
@@ -26,10 +26,27 @@
   ClFlags &operator=(const ClFlags &) = delete;
 
 public:
-  ClFlags() { resetClFlags(*this); }
+  ClFlags()
+      : // bool fields.
+        AllowErrorRecovery(false),
+        AllowUninitializedGlobals(false), DataSections(false),
+        DecorateAsm(false), DisableInternal(false), DisableIRGeneration(false),
+        DisableTranslation(false), DumpStats(false), FunctionSections(false),
+        GenerateUnitTestMessages(false), PhiEdgeSplit(false),
+        RandomNopInsertion(false), RandomRegAlloc(false),
+        SubzeroTimingEnabled(false), TimeEachFunction(false),
+        UseSandboxing(false),
+        // Enum and integer fields.
+        Opt(Opt_m1), OutFileType(FT_Iasm), RandomMaxNopsPerInstruction(0),
+        RandomNopProbabilityAsPercentage(0), TArch(TargetArch_NUM),
+        VMask(IceV_None),
+        // IceString fields.
+        DefaultFunctionPrefix(""), DefaultGlobalPrefix(""), TestPrefix(""),
+        TimingFocusOn(""), TranslateOnly(""), VerboseFocusOn(""),
+        // size_t and 64-bit fields.
+        NumTranslationThreads(0), RandomSeed(0) {}
 
   static void parseFlags(int argc, char *argv[]);
-  static void resetClFlags(ClFlags &OutFlags);
   static void getParsedClFlags(ClFlags &OutFlags);
   static void getParsedClFlagsExtra(ClFlagsExtra &OutFlagsExtra);
 

src/PNaClTranslator.cpp

diff --git a/src/PNaClTranslator.cpp b/src/PNaClTranslator.cpp
index ce46239..35cdcf7 100644
--- a/src/PNaClTranslator.cpp
+++ b/src/PNaClTranslator.cpp
@@ -486,12 +486,10 @@
   ErrorStatus.assign(Ice::EC_Bitcode);
   ++NumErrors;
   Ice::GlobalContext *Context = Translator.getContext();
-  { // Lock while printing out error message.
-    Ice::OstreamLocker L(Context);
-    raw_ostream &OldErrStream = setErrStream(Context->getStrDump());
-    NaClBitcodeParser::ErrorAt(Level, Bit, Message);
-    setErrStream(OldErrStream);
-  }
+  Ice::OstreamLocker L(Context);
+  raw_ostream &OldErrStream = setErrStream(Context->getStrDump());
+  NaClBitcodeParser::ErrorAt(Level, Bit, Message);
+  setErrStream(OldErrStream);
   if (Level >= naclbitc::Error &&
       !Translator.getFlags().getAllowErrorRecovery())
     Fatal();

unittest/BitcodeMunge.cpp

diff --git a/unittest/BitcodeMunge.cpp b/unittest/BitcodeMunge.cpp
index 689279e..fd7100c 100644
--- a/unittest/BitcodeMunge.cpp
+++ b/unittest/BitcodeMunge.cpp
@@ -19,25 +19,19 @@
 
 namespace IceTest {
 
-void IceTest::SubzeroBitcodeMunger::resetFlags() {
-  Ice::ClFlags::resetClFlags(Flags);
-  resetMungeFlags();
-}
+bool IceTest::SubzeroBitcodeMunger::runTest(const char *TestName,
+                                            const uint64_t Munges[],
+                                            size_t MungeSize) {
+  const bool AddHeader = true;
+  setupTest(TestName, Munges, MungeSize, AddHeader);
 
-void IceTest::SubzeroBitcodeMunger::resetMungeFlags() {
+  Ice::ClFlags Flags;
   Flags.setAllowErrorRecovery(true);
   Flags.setGenerateUnitTestMessages(true);
   Flags.setOptLevel(Ice::Opt_m1);
   Flags.setOutFileType(Ice::FT_Iasm);
   Flags.setTargetArch(Ice::Target_X8632);
   Flags.setVerbose(Ice::IceV_Instructions);
-}
-
-bool IceTest::SubzeroBitcodeMunger::runTest(const char *TestName,
-                                            const uint64_t Munges[],
-                                            size_t MungeSize) {
-  const bool AddHeader = true;
-  setupTest(TestName, Munges, MungeSize, AddHeader);
   Ice::GlobalContext Ctx(DumpStream, DumpStream, nullptr, Flags);
   Ice::PNaClTranslator Translator(&Ctx);
   Translator.translateBuffer(TestName, MungedInput.get());

unittest/BitcodeMunge.h

diff --git a/unittest/BitcodeMunge.h b/unittest/BitcodeMunge.h
index 0b99864..6b639a7 100644
--- a/unittest/BitcodeMunge.h
+++ b/unittest/BitcodeMunge.h
@@ -17,8 +17,6 @@
 
 #include "llvm/Bitcode/NaCl/NaClBitcodeMunge.h"
 
-#include "IceClFlags.h"
-
 namespace IceTest {
 
 // Class to run tests on Subzero's bitcode parser. Runs a Subzero
@@ -29,9 +27,7 @@
 public:
   SubzeroBitcodeMunger(const uint64_t Records[], size_t RecordSize,
                        uint64_t RecordTerminator)
-      : llvm::NaClBitcodeMunger(Records, RecordSize, RecordTerminator) {
-    resetMungeFlags();
-  }
+      : llvm::NaClBitcodeMunger(Records, RecordSize, RecordTerminator) {}
 
   /// Runs PNaClTranslator to translate bitcode records (with defined
   /// record Munges), and puts output into DumpResults. Returns true
@@ -43,15 +39,6 @@
     uint64_t NoMunges[] = {0};
     return runTest(TestName, NoMunges, 0);
   }
-
-  /// Sets flags back to default assumptions for munging.
-  void resetFlags();
-
-  /// Flags to use to run tests. Use to change default assumptions.
-  Ice::ClFlags Flags;
-
-private:
-  void resetMungeFlags();
 };
 
 } // end of namespace IceTest

unittest/IceParseInstsTest.cpp

diff --git a/unittest/IceParseInstsTest.cpp b/unittest/IceParseInstsTest.cpp
index 191eff9..5d45888 100644
--- a/unittest/IceParseInstsTest.cpp
+++ b/unittest/IceParseInstsTest.cpp
@@ -63,12 +63,6 @@
   EXPECT_FALSE(Munger.runTest("Nonexistent call arg"));
   EXPECT_EQ("Error(66:4): Invalid function record: <34 0 4 2 100>\n",
             Munger.getTestResults());
-
-  // Show that we generate a fatal error when not allowing error recovery.
-  Munger.Flags.setAllowErrorRecovery(false);
-  EXPECT_DEATH(
-      Munger.runTest("Nonexistent call arg"),
-      ".*ERROR: Unable to continue.*");
 }
 
 /// Test how we recognize alignments in alloca instructions.