Fix all Clang-14 warnings (shader-slang#4203)

* fix all Clang-14 warnings

* remove a clang-14 warning fix because it is a MSVC warning...

source/slang/slang-capability.cpp

@@ -627,8 +627,10 @@ bool CapabilitySet::hasSameTargets(const CapabilitySet& other) const
 
 
 // MSVC incorrectly throws warning
+#if defined(_MSC_VER)
 #pragma warning(push)
 #pragma warning(disable:4702)
+#endif
 /// returns true if 'this' is a better target for 'targetCaps' than 'that'
 /// isEqual: is `this` and `that` equal
 /// isIncompatible: is `this` and `that` incompatible
@@ -743,7 +745,9 @@ bool CapabilitySet::isBetterForTarget(CapabilitySet const& that, CapabilitySet c
     }
     return true;
 }
+#if defined(_MSC_VER)
 #pragma warning(pop)
+#endif
 
 CapabilitySet::AtomSets::Iterator CapabilitySet::getAtomSets() const
 {

source/slang/slang-check-conformance.cpp

@@ -272,7 +272,7 @@ namespace Slang
                     sized = true;
                 }
             }
-            else if (auto intVal = arrayType->getElementCount())
+            else if (arrayType->getElementCount())
             {
                 sized = true;
                 typeTag = (TypeTag)((int)typeTag | (int)TypeTag::LinkTimeSized);

source/slang/slang-compiler.cpp

@@ -1669,6 +1669,7 @@ namespace Slang
             SLANG_UNEXPECTED("unhandled code generation target");
             break;
         }
+        return SLANG_FAIL;
     }
 
     void EndToEndCompileRequest::writeArtifactToStandardOutput(IArtifact* artifact, DiagnosticSink* sink)

source/slang/slang-ir-autodiff-unzip.h

@@ -372,7 +372,7 @@ struct DiffUnzipPass
             }
             else
             {
-                if (auto inOutType = as<IRInOutType>(resolvedPrimalFuncType->getParamType(ii)))
+                if (as<IRInOutType>(resolvedPrimalFuncType->getParamType(ii)))
                 {
                     // For 'inout' parameter we need to create a temp var to hold the value
                     // before the primal call. This logic is similar to the 'inout' case for differentiable params

source/slang/slang-ir-insert-debug-value-store.cpp

@@ -180,7 +180,7 @@ namespace Slang
                     Index i = 0;
                     for (; i < accessChain.getCount(); i++)
                     {
-                        if (auto key = as<IRStructKey>(accessChain[i]))
+                        if (as<IRStructKey>(accessChain[i]))
                         {
                             continue;
                         }

source/slang/slang-ir-lower-buffer-element-type.cpp

@@ -515,7 +515,7 @@ namespace Slang
         {
             // If `type` is already a lowered type, no more lowering is required.
             LoweredElementTypeInfo info;
-            if (auto pInfo = mapLoweredTypeToInfo->tryGetValue(type))
+            if (mapLoweredTypeToInfo->tryGetValue(type))
             {
                 info.originalType = type;
                 info.loweredType = type;

source/slang/slang-ir-metal-legalize.cpp

@@ -36,7 +36,7 @@ namespace Slang
         List<IRParam*> paramsToProcess;
         for (auto param : func->getParams())
         {
-            if (auto structType = as<IRStructType>(param->getDataType()))
+            if (as<IRStructType>(param->getDataType()))
             {
                 paramsToProcess.add(param);
             }

source/slang/slang-ir-pytorch-cpp-binding.cpp

@@ -82,7 +82,7 @@ static IRType* translateToTupleType(
         }
         return builder.getTargetTupleType((UInt)elementTypes.getCount(), elementTypes.getBuffer());
     }
-    else if (auto targetTupleType = as<IRTargetTupleType>(type))
+    else if (as<IRTargetTupleType>(type))
     {
         return type;
     }
@@ -192,7 +192,7 @@ static IRInst* makeTargetTuple(IRBuilder& builder, IRInst* val)
         auto resultType = builder.getTargetTupleType((UInt)elementTypes.getCount(), elementTypes.getBuffer());
         return builder.emitMakeTargetTuple(resultType, (UInt)resultElements.getCount(), resultElements.getBuffer());
     }
-    else if (auto targetTupleType = as<IRTargetTupleType>(type))
+    else if (as<IRTargetTupleType>(type))
     {
         return val;
     }
@@ -284,7 +284,7 @@ static IRInst* makeValueFromTargetTuple(IRBuilder& builder, IRType* type, IRInst
         }
         return builder.emitMakeStruct(type, (UInt)resultElements.getCount(), resultElements.getBuffer());
     }
-    else if (auto targetTupleType = as<IRTargetTupleType>(type))
+    else if (as<IRTargetTupleType>(type))
     {
         return val;
     }
@@ -1021,7 +1021,7 @@ void lowerBuiltinTypesForKernelEntryPoints(IRModule* module, DiagnosticSink*)
                 // Rebuild the call/dispatch inst.
                 IRInst* newCall = nullptr;
 
-                if (auto callInst = as<IRCall>(user))
+                if (as<IRCall>(user))
                     newCall = callBuilder.emitCallInst(user->getFullType(), func, convertedArgs);
                 else if (auto dispatchInst = as<IRDispatchKernel>(user))
                     newCall = callBuilder.emitDispatchKernelInst(

source/slang/slang-ir-uniformity.cpp

@@ -97,7 +97,7 @@ namespace Slang
             // will use the fallback behavior (result is non-uniform if any of its arguments are non-uniform).
             for (auto block : key.func->getBlocks())
             {
-                if (auto genAsm = as<IRGenericAsm>(block->getTerminator()))
+                if (as<IRGenericAsm>(block->getTerminator()))
                 {
                     return nullptr;
                 }

source/slang/slang-lower-to-ir.cpp

@@ -2224,7 +2224,7 @@ void addVarDecorations(
         {
             builder->addSemanticDecoration(inst, hlslSemantic->name.getContent());
         }
-        else if (auto dynamicUniform = as<DynamicUniformModifier>(mod))
+        else if (as<DynamicUniformModifier>(mod))
         {
             builder->addDynamicUniformDecoration(inst);
         }
@@ -8629,7 +8629,7 @@ struct DeclLoweringVisitor : DeclVisitor<DeclLoweringVisitor, LoweredValInfo>
                 {
                     lowerPackOffsetModifier(fieldKey, packOffsetModifier);
                 }
-                else if (auto dynamicUniformModifer = as<DynamicUniformModifier>(mod))
+                else if (as<DynamicUniformModifier>(mod))
                 {
                     subBuilder->addDynamicUniformDecoration(fieldKey);
                 }
@@ -9774,15 +9774,15 @@ struct DeclLoweringVisitor : DeclVisitor<DeclLoweringVisitor, LoweredValInfo>
             {
                 getBuilder()->addSimpleDecoration<IRNoInlineDecoration>(irFunc);
             }
-            else if (auto derivativeGroupQuadMod = as<DerivativeGroupQuadAttribute>(modifier))
+            else if (as<DerivativeGroupQuadAttribute>(modifier))
             {
                 derivativeGroupQuadDecor = getBuilder()->addSimpleDecoration<IRDerivativeGroupQuadDecoration>(irFunc);
             }
-            else if (auto derivativeGroupLinearMod = as<DerivativeGroupLinearAttribute>(modifier))
+            else if (as<DerivativeGroupLinearAttribute>(modifier))
             {
                 derivativeGroupLinearDecor = getBuilder()->addSimpleDecoration<IRDerivativeGroupLinearDecoration>(irFunc);
             }
-            else if (auto noRefInlineAttribute = as<NoRefInlineAttribute>(modifier))
+            else if (as<NoRefInlineAttribute>(modifier))
             {
                 getBuilder()->addSimpleDecoration<IRNoRefInlineDecoration>(irFunc);
             }
@@ -9954,7 +9954,7 @@ struct DeclLoweringVisitor : DeclVisitor<DeclLoweringVisitor, LoweredValInfo>
                 getBuilder()->addRequireSPIRVVersionDecoration(irFunc, spvVersion->version);
             else if (auto cudasmVersion = as<RequiredCUDASMVersionModifier>(modifier))
                 getBuilder()->addRequireCUDASMVersionDecoration(irFunc, cudasmVersion->version);
-            else if (auto nonUniform= as<NonDynamicUniformAttribute>(modifier))
+            else if (as<NonDynamicUniformAttribute>(modifier))
                 getBuilder()->addDecoration(irFunc, kIROp_NonDynamicUniformReturnDecoration);
         }
 

source/slang/slang-parser.cpp

@@ -4536,7 +4536,6 @@ namespace Slang
         parser->pendingModifiers = &modifiers;
 
         auto loc = parser->tokenReader.peekLoc();
-        auto ptoken = parser->tokenReader.peekToken();
         switch (peekTokenType(parser))
         {
         case TokenType::Identifier:

source/slang/slang-type-layout.cpp

@@ -4131,15 +4131,15 @@ static TypeLayoutResult _createTypeLayout(
             type,
             rules);
     }
-    else if (auto subpassType = as<SubpassInputType>(type))
+    else if (as<SubpassInputType>(type))
     {
         ShaderParameterKind kind = ShaderParameterKind::SubpassInput;
         return createSimpleTypeLayout(
             rules->GetObjectLayout(kind, context.objectLayoutOptions),
             type,
             rules);
     }
-    else if (auto atomicType = as<GLSLAtomicUintType>(type))
+    else if (as<GLSLAtomicUintType>(type))
     {
         ShaderParameterKind kind = ShaderParameterKind::AtomicUint;
         return createSimpleTypeLayout(

tools/gfx/vulkan/vk-device.cpp

@@ -1678,7 +1678,7 @@ Result DeviceImpl::createTextureResource(
                 break;
             case SLANG_SCALAR_TYPE_UINT32:
                 for(int i = 0; i < 4; i++)
-                    clearColor.uint32[i] = *reinterpret_cast<uint32_t*>(const_cast<void*>(initData->data));                break;
+                    clearColor.uint32[i] = *reinterpret_cast<uint32_t*>(const_cast<void*>(initData->data));
                 break;
             case SLANG_SCALAR_TYPE_INT64:
             {

tools/slang-capability-generator/capability-generator-main.cpp

@@ -418,7 +418,7 @@ void outputUIntSetAsBufferValues(const String& nameOfBuffer, StringBuilder& resu
     resultBuilder << "const static CapabilityAtomSet " << nameOfBuffer << " = CapabilityAtomSet({\n";
     for (auto i : set.getBuffer())
     {
-        resultBuilder << "    UIntSet::Element(" << i << "),\n";
+        resultBuilder << "    UIntSet::Element(" << i << "U),\n";
     }
     resultBuilder << "    0\n});\n";
 }