Extend preprocessor LLVM version checks to support LLVM 4.x

This doesn't actually do anything for LLVM 4.x yet, but sets the stage.

src/rustllvm/RustWrapper.cpp

@@ -394,7 +394,7 @@ extern "C" LLVMRustMetadataRef LLVMRustDIBuilderCreateSubroutineType(
     LLVMRustMetadataRef File,
     LLVMRustMetadataRef ParameterTypes) {
     return wrap(Builder->createSubroutineType(
-#if LLVM_VERSION_MINOR == 7
+#if LLVM_VERSION_EQ(3, 7)
         unwrapDI<DIFile>(File),
 #endif
         DITypeRefArray(unwrap<MDTuple>(ParameterTypes))));
@@ -416,7 +416,7 @@ extern "C" LLVMRustMetadataRef LLVMRustDIBuilderCreateFunction(
     LLVMValueRef Fn,
     LLVMRustMetadataRef TParam,
     LLVMRustMetadataRef Decl) {
-#if LLVM_VERSION_MINOR >= 8
+#if LLVM_VERSION_GE(3, 8)
     DITemplateParameterArray TParams =
         DITemplateParameterArray(unwrap<MDTuple>(TParam));
     DISubprogram *Sub = Builder->createFunction(
@@ -565,7 +565,7 @@ extern "C" LLVMRustMetadataRef LLVMRustDIBuilderCreateVariable(
     int64_t* AddrOps,
     unsigned AddrOpsCount,
     unsigned ArgNo) {
-#if LLVM_VERSION_MINOR >= 8
+#if LLVM_VERSION_GE(3, 8)
     if (Tag == 0x100) { // DW_TAG_auto_variable
         return wrap(Builder->createAutoVariable(
             unwrapDI<DIDescriptor>(Scope), Name,
@@ -814,7 +814,7 @@ LLVMRustLinkInExternalBitcode(LLVMModuleRef dst, char *bc, size_t len) {
 
     raw_string_ostream Stream(Err);
     DiagnosticPrinterRawOStream DP(Stream);
-#if LLVM_VERSION_MINOR >= 8
+#if LLVM_VERSION_GE(3, 8)
     if (Linker::linkModules(*Dst, std::move(Src.get()))) {
 #else
     if (Linker::LinkModules(Dst, Src->get(), [&](const DiagnosticInfo &DI) { DI.print(DP); })) {
@@ -937,14 +937,14 @@ to_rust(DiagnosticKind kind)
         return LLVMRustDiagnosticKind::OptimizationRemarkMissed;
     case DK_OptimizationRemarkAnalysis:
         return LLVMRustDiagnosticKind::OptimizationRemarkAnalysis;
-#if LLVM_VERSION_MINOR >= 8
+#if LLVM_VERSION_GE(3, 8)
     case DK_OptimizationRemarkAnalysisFPCommute:
         return LLVMRustDiagnosticKind::OptimizationRemarkAnalysisFPCommute;
     case DK_OptimizationRemarkAnalysisAliasing:
         return LLVMRustDiagnosticKind::OptimizationRemarkAnalysisAliasing;
 #endif
     default:
-#if LLVM_VERSION_MINOR >= 9
+#if LLVM_VERSION_GE(3, 9)
         return (kind >= DK_FirstRemark && kind <= DK_LastRemark) ?
             LLVMRustDiagnosticKind::OptimizationRemarkOther :
             LLVMRustDiagnosticKind::Other;
@@ -994,7 +994,7 @@ extern "C" LLVMTypeKind LLVMRustGetTypeKind(LLVMTypeRef Ty) {
     return LLVMVectorTypeKind;
   case Type::X86_MMXTyID:
     return LLVMX86_MMXTypeKind;
-#if LLVM_VERSION_MINOR >= 8
+#if LLVM_VERSION_GE(3, 8)
   case Type::TokenTyID:
     return LLVMTokenTypeKind;
 #endif
@@ -1043,7 +1043,7 @@ LLVMRustBuildCleanupPad(LLVMBuilderRef Builder,
                         unsigned ArgCnt,
                         LLVMValueRef *LLArgs,
                         const char *Name) {
-#if LLVM_VERSION_MINOR >= 8
+#if LLVM_VERSION_GE(3, 8)
     Value **Args = unwrap(LLArgs);
     if (ParentPad == NULL) {
         Type *Ty = Type::getTokenTy(unwrap(Builder)->getContext());
@@ -1061,7 +1061,7 @@ extern "C" LLVMValueRef
 LLVMRustBuildCleanupRet(LLVMBuilderRef Builder,
                         LLVMValueRef CleanupPad,
                         LLVMBasicBlockRef UnwindBB) {
-#if LLVM_VERSION_MINOR >= 8
+#if LLVM_VERSION_GE(3, 8)
     CleanupPadInst *Inst = cast<CleanupPadInst>(unwrap(CleanupPad));
     return wrap(unwrap(Builder)->CreateCleanupRet(Inst, unwrap(UnwindBB)));
 #else
@@ -1075,7 +1075,7 @@ LLVMRustBuildCatchPad(LLVMBuilderRef Builder,
                       unsigned ArgCnt,
                       LLVMValueRef *LLArgs,
                       const char *Name) {
-#if LLVM_VERSION_MINOR >= 8
+#if LLVM_VERSION_GE(3, 8)
     Value **Args = unwrap(LLArgs);
     return wrap(unwrap(Builder)->CreateCatchPad(unwrap(ParentPad),
                                                 ArrayRef<Value*>(Args, ArgCnt),
@@ -1089,7 +1089,7 @@ extern "C" LLVMValueRef
 LLVMRustBuildCatchRet(LLVMBuilderRef Builder,
                       LLVMValueRef Pad,
                       LLVMBasicBlockRef BB) {
-#if LLVM_VERSION_MINOR >= 8
+#if LLVM_VERSION_GE(3, 8)
     return wrap(unwrap(Builder)->CreateCatchRet(cast<CatchPadInst>(unwrap(Pad)),
                                                 unwrap(BB)));
 #else
@@ -1103,7 +1103,7 @@ LLVMRustBuildCatchSwitch(LLVMBuilderRef Builder,
                          LLVMBasicBlockRef BB,
                          unsigned NumHandlers,
                          const char *Name) {
-#if LLVM_VERSION_MINOR >= 8
+#if LLVM_VERSION_GE(3, 8)
     if (ParentPad == NULL) {
         Type *Ty = Type::getTokenTy(unwrap(Builder)->getContext());
         ParentPad = wrap(Constant::getNullValue(Ty));
@@ -1120,7 +1120,7 @@ LLVMRustBuildCatchSwitch(LLVMBuilderRef Builder,
 extern "C" void
 LLVMRustAddHandler(LLVMValueRef CatchSwitchRef,
                    LLVMBasicBlockRef Handler) {
-#if LLVM_VERSION_MINOR >= 8
+#if LLVM_VERSION_GE(3, 8)
     Value *CatchSwitch = unwrap(CatchSwitchRef);
     cast<CatchSwitchInst>(CatchSwitch)->addHandler(unwrap(Handler));
 #endif
@@ -1129,14 +1129,14 @@ LLVMRustAddHandler(LLVMValueRef CatchSwitchRef,
 extern "C" void
 LLVMRustSetPersonalityFn(LLVMBuilderRef B,
                          LLVMValueRef Personality) {
-#if LLVM_VERSION_MINOR >= 8
+#if LLVM_VERSION_GE(3, 8)
     unwrap(B)->GetInsertBlock()
              ->getParent()
              ->setPersonalityFn(cast<Function>(unwrap(Personality)));
 #endif
 }
 
-#if LLVM_VERSION_MINOR >= 8
+#if LLVM_VERSION_GE(3, 8)
 extern "C" OperandBundleDef*
 LLVMRustBuildOperandBundleDef(const char *Name,
                               LLVMValueRef *Inputs,