Build: Silence all Clang + SubZero warnings.

CMakeLists.txt

@@ -292,6 +292,7 @@ else()
         set_cpp_flag("-Wno-unneeded-internal-declaration") # function 'X' is not needed and will not be emitted
         set_cpp_flag("-Wno-unused-private-field")          # private field 'offset' is not used - TODO: Consider enabling this once Vulkan is further implemented.
         set_cpp_flag("-Wno-comment")                       # multi-line comment
+        set_cpp_flag("-Wno-undefined-var-template")        # instantiation of variable 'X' required here, but no definition is available
     endif()
 
     # For distribution it is more important to be slim than super optimized

third_party/LLVM/include/llvm/Analysis/LoopInfo.h

@@ -294,7 +294,6 @@ public:
 
     // Loop over the predecessors of the header node...
     BlockT *Header = getHeader();
-    typedef GraphTraits<BlockT*> BlockTraits;
     typedef GraphTraits<Inverse<BlockT*> > InvBlockTraits;
     for (typename InvBlockTraits::ChildIteratorType PI =
          InvBlockTraits::child_begin(Header),

third_party/LLVM/include/llvm/SymbolTableListTraits.h

@@ -46,7 +46,6 @@ public:
   /// getListOwner - Return the object that owns this list.  If this is a list
   /// of instructions, it returns the BasicBlock that owns them.
   ItemParentClass *getListOwner() {
-    typedef iplist<ValueSubClass> ItemParentClass::*Sublist;
     size_t Offset(size_t(&((ItemParentClass*)0->*ItemParentClass::
                            getSublistAccess(static_cast<ValueSubClass*>(0)))));
     iplist<ValueSubClass>* Anchor(static_cast<iplist<ValueSubClass>*>(this));

third_party/LLVM/lib/CodeGen/MachineModuleInfo.cpp

@@ -265,13 +265,6 @@ MachineModuleInfo::MachineModuleInfo(const MCAsmInfo &MAI,
   TheModule = 0;
 }
 
-MachineModuleInfo::MachineModuleInfo()
-  : ImmutablePass(ID),
-    Context(*(MCAsmInfo*)0, *(MCRegisterInfo*)0, (MCObjectFileInfo*)0) {
-  assert(0 && "This MachineModuleInfo constructor should never be called, MMI "
-         "should always be explicitly constructed by LLVMTargetMachine");
-  abort();
-}
 
 MachineModuleInfo::~MachineModuleInfo() {
   delete ObjFileMMI;

third_party/LLVM/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp

@@ -1629,7 +1629,6 @@ SDValue SelectionDAGLegalize::LegalizeOp(SDValue Op) {
           break;
         case TargetLowering::Expand:
 
-          EVT WideScalarVT = Tmp3.getValueType().getScalarType();
           EVT NarrowScalarVT = StVT.getScalarType();
 
           if (StVT.isVector()) {
@@ -1649,7 +1648,6 @@ SDValue SelectionDAGLegalize::LegalizeOp(SDValue Op) {
             if (RegScalarLegal) {
               // Cast floats into integers
               unsigned ScalarSize = MemSclVT.getSizeInBits();
-              EVT EltVT = EVT::getIntegerVT(*DAG.getContext(), ScalarSize);
 
               // Round odd types to the next pow of two.
               if (!isPowerOf2_32(ScalarSize))

third_party/LLVM/lib/MC/WinCOFFObjectWriter.cpp

@@ -191,17 +191,6 @@ static inline void write_uint32_le(void *Data, uint32_t const &Value) {
   Ptr[3] = (Value & 0xFF000000) >> 24;
 }
 
-static inline void write_uint16_le(void *Data, uint16_t const &Value) {
-  uint8_t *Ptr = reinterpret_cast<uint8_t *>(Data);
-  Ptr[0] = (Value & 0x00FF) >> 0;
-  Ptr[1] = (Value & 0xFF00) >> 8;
-}
-
-static inline void write_uint8_le(void *Data, uint8_t const &Value) {
-  uint8_t *Ptr = reinterpret_cast<uint8_t *>(Data);
-  Ptr[0] = (Value & 0xFF) >> 0;
-}
-
 //------------------------------------------------------------------------------
 // Symbol class implementation
 

third_party/LLVM/lib/Support/CrashRecoveryContext.cpp

@@ -224,10 +224,10 @@ void CrashRecoveryContext::Disable() {
 
 #include <signal.h>
 
+#ifdef ENABLE_SIGNAL_OVERRIDES
 static int Signals[] = { SIGABRT, SIGBUS, SIGFPE, SIGILL, SIGSEGV, SIGTRAP };
 static const unsigned NumSignals = sizeof(Signals) / sizeof(Signals[0]);
 static struct sigaction PrevActions[NumSignals];
-
 static void CrashRecoverySignalHandler(int Signal) {
   // Lookup the current thread local recovery object.
   const CrashRecoveryContextImpl *CRCI = CurrentContext.get();
@@ -259,6 +259,7 @@ static void CrashRecoverySignalHandler(int Signal) {
   if (CRCI)
     const_cast<CrashRecoveryContextImpl*>(CRCI)->HandleCrash();
 }
+#endif // ENABLE_SIGNAL_OVERRIDES
 
 void CrashRecoveryContext::Enable() {
   sys::ScopedLock L(gCrashRecoveryContexMutex);

third_party/LLVM/lib/Support/Unix/Program.inc

@@ -149,8 +149,10 @@ static bool RedirectIO_PS(const Path *Path, int FD, std::string *ErrMsg,
 }
 #endif
 
+#ifdef ENABLE_SIGNAL_OVERRIDES
 static void TimeOutHandler(int Sig) {
 }
+#endif
 
 static void SetMemoryLimits (unsigned size)
 {
@@ -302,6 +304,7 @@ Program::Wait(const sys::Path &path,
 {
 #ifdef HAVE_SYS_WAIT_H
   struct sigaction Act, Old;
+  (void)Act; (void)Old;
 
   if (Data_ == 0) {
     MakeErrMsg(ErrMsg, "Process not started!");

third_party/LLVM/lib/Support/Unix/Signals.inc

@@ -32,7 +32,9 @@
 #endif
 using namespace llvm;
 
+#ifdef ENABLE_SIGNAL_OVERRIDES
 static RETSIGTYPE SignalHandler(int Sig);  // defined below.
+#endif // ENABLE_SIGNAL_OVERRIDES
 
 static SmartMutex<true> SignalsMutex;
 
@@ -76,6 +78,7 @@ static struct {
 } RegisteredSignalInfo[(sizeof(IntSigs)+sizeof(KillSigs))/sizeof(KillSigs[0])];
 
 
+#ifdef ENABLE_SIGNAL_OVERRIDES
 static void RegisterHandler(int Signal) {
   assert(NumRegisteredSignals <
          sizeof(RegisteredSignalInfo)/sizeof(RegisteredSignalInfo[0]) &&
@@ -93,6 +96,7 @@ static void RegisterHandler(int Signal) {
   RegisteredSignalInfo[NumRegisteredSignals].SigNo = Signal;
   ++NumRegisteredSignals;
 }
+#endif // ENABLE_SIGNAL_OVERRIDES
 
 static void RegisterHandlers() {
 #ifdef ENABLE_SIGNAL_OVERRIDES
@@ -104,6 +108,7 @@ static void RegisterHandlers() {
 #endif
 }
 
+#ifdef ENABLE_SIGNAL_OVERRIDES
 static void UnregisterHandlers() {
   // Restore all of the signal handlers to how they were before we showed up.
   for (unsigned i = 0, e = NumRegisteredSignals; i != e; ++i)
@@ -111,6 +116,7 @@ static void UnregisterHandlers() {
               &RegisteredSignalInfo[i].SA, 0);
   NumRegisteredSignals = 0;
 }
+#endif // ENABLE_SIGNAL_OVERRIDES
 
 
 /// RemoveFilesToRemove - Process the FilesToRemove list. This function
@@ -122,6 +128,7 @@ static void RemoveFilesToRemove() {
   }
 }
 
+#ifdef ENABLE_SIGNAL_OVERRIDES
 // SignalHandler - The signal handler that runs.
 static RETSIGTYPE SignalHandler(int Sig) {
   // Restore the signal behavior to default, so that the program actually
@@ -158,6 +165,7 @@ static RETSIGTYPE SignalHandler(int Sig) {
   for (unsigned i = 0, e = CallBacksToRun.size(); i != e; ++i)
     CallBacksToRun[i].first(CallBacksToRun[i].second);
 }
+#endif // ENABLE_SIGNAL_OVERRIDES
 
 void llvm::sys::RunInterruptHandlers() {
   SignalsMutex.acquire();

third_party/LLVM/lib/Transforms/InstCombine/InstCombinePHI.cpp

@@ -608,7 +608,6 @@ namespace llvm {
   struct isPodLike<LoweredPHIRecord> { static const bool value = true; };
 }
 
-
 /// SliceUpIllegalIntegerPHI - This is an integer PHI and we know that it has an
 /// illegal type: see if it is only used by trunc or trunc(lshr) operations.  If
 /// so, we split the PHI into the various pieces being extracted.  This sort of
@@ -618,6 +617,11 @@ namespace llvm {
 /// inttoptr.  We should produce new PHIs in the right type.
 ///
 Instruction *InstCombiner::SliceUpIllegalIntegerPHI(PHINode &FirstPhi) {
+
+  // Silence unused variable warning. I'd normally just remove them - but this
+  // will cause chaos if the compiler is wrong.
+  (void) isPodLike<LoweredPHIRecord>::value;
+
   // PHIUsers - Keep track of all of the truncated values extracted from a set
   // of PHIs, along with their offset.  These are the things we want to rewrite.
   SmallVector<PHIUsageRecord, 16> PHIUsers;