fix warnings (#3224)

* Remove unused variable

* Remove unused variable

* Remove unused if bindings

6 files changed, 7 insertions, 16 deletions

diff --git a/source/slang/slang-ir-check-differentiability.cpp b/source/slang/slang-ir-check-differentiability.cpp
index 8f01a574f..8124f9210 100644
--- a/source/slang/slang-ir-check-differentiability.cpp
+++ b/source/slang/slang-ir-check-differentiability.cpp
@@ -274,14 +274,11 @@ public:
         InstHashSet expectDiffSet(funcInst->getModule());
         InstHashSet carryNonTrivialDiffSet(funcInst->getModule());
 
-        int differentiableOutputs = 0;
         bool isDifferentiableReturnType = false;
         for (auto param : funcInst->getFirstBlock()->getParams())
         {
             if (isDifferentiableType(diffTypeContext, param->getFullType()))
             {
-                if (as<IROutTypeBase>(param->getFullType()))
-                    differentiableOutputs++;
                 produceDiffSet.add(param);
                 carryNonTrivialDiffSet.add(param);
             }
@@ -290,7 +287,6 @@ public:
         {
             if (isDifferentiableType(diffTypeContext, funcType->getResultType()))
             {
-                differentiableOutputs++;
                 isDifferentiableReturnType = true;
             }
         }
diff --git a/source/slang/slang-ir-constexpr.cpp b/source/slang/slang-ir-constexpr.cpp
index 5731238ee..6e56ebd96 100644
--- a/source/slang/slang-ir-constexpr.cpp
+++ b/source/slang/slang-ir-constexpr.cpp
@@ -272,7 +272,7 @@ bool isUnrollableLoop(IRLoop* loop)
                 if (!isConstExpr(ifElse->getCondition()))
                     return false;
             }
-            else if (auto switchInst = as<IRSwitch>(block->getTerminator()))
+            else if (as<IRSwitch>(block->getTerminator()))
             {
                 if (!isConstExpr(ifElse->getCondition()))
                     return false;
diff --git a/source/slang/slang-ir-glsl-legalize.cpp b/source/slang/slang-ir-glsl-legalize.cpp
index b94afe611..590404bf3 100644
--- a/source/slang/slang-ir-glsl-legalize.cpp
+++ b/source/slang/slang-ir-glsl-legalize.cpp
@@ -1519,7 +1519,7 @@ ScalarizedVal adaptType(
                 val = builder->emitVectorReshape(fromType, val);
             }
         }
-        else if (auto toBasicType = as<IRBasicType>(toType))
+        else if (as<IRBasicType>(toType))
         {
             UInt index = 0;
             val = builder->emitSwizzle(fromVector->getElementType(), val, 1, &index);
diff --git a/source/slang/slang-ir-pytorch-cpp-binding.cpp b/source/slang/slang-ir-pytorch-cpp-binding.cpp
index c0adef436..c723902de 100644
--- a/source/slang/slang-ir-pytorch-cpp-binding.cpp
+++ b/source/slang/slang-ir-pytorch-cpp-binding.cpp
@@ -522,11 +522,6 @@ void generateReflectionFunc(IRBuilder* builder, IRFunc* kernelFunc, IRFunc* host
 
 IRInst* generateHostParamForCUDAParam(IRBuilder* builder, IRParam* param, DiagnosticSink* sink, IRType** outType = nullptr)
 {
-    auto typeMap = [&](IRType* t) -> IRType* {
-        if (auto tensorViewType = as<IRTensorViewType>(t))
-            return builder->getTorchTensorType(tensorViewType->getElementType());
-    };
-
     auto type = translateToHostType(builder, param->getDataType(), sink);
     if (outType)
         *outType = type;
@@ -749,7 +744,7 @@ IRFunc* generateCUDAWrapperForFunc(IRFunc* func, DiagnosticSink* sink)
         builder.addExternCppDecoration(hostFunc, externCppHint->getName());
     }
 
-    if (auto exportInfoHint = func->findDecoration<IRAutoPyBindExportInfoDecoration>())
+    if (func->findDecoration<IRAutoPyBindExportInfoDecoration>())
         generateReflectionFunc(&builder, func, hostFunc);
 
     return hostFunc;
@@ -919,7 +914,7 @@ void generateDerivativeWrappers(IRModule* module, DiagnosticSink* sink)
                 builder.emitReturn(fwdDiffCall);
 
                 // If the original func is a CUDA kernel, mark the wrapper as a CUDA kernel as well.
-                if (auto kernelHint = func->findDecoration<IRCudaKernelDecoration>())
+                if (func->findDecoration<IRCudaKernelDecoration>())
                     builder.addCudaKernelDecoration(wrapperFunc);
 
                 // Add an auto-pybind-cuda decoration to the wrapper function to further generate the 
@@ -975,7 +970,7 @@ void generateDerivativeWrappers(IRModule* module, DiagnosticSink* sink)
                 builder.emitReturn(fwdDiffCall);
 
                 // If the original func is a CUDA kernel, mark the wrapper as a CUDA kernel as well.
-                if (auto kernelHint = func->findDecoration<IRCudaKernelDecoration>())
+                if (func->findDecoration<IRCudaKernelDecoration>())
                     builder.addCudaKernelDecoration(wrapperFunc);
 
                 // Add an auto-pybind-cuda decoration to the wrapper function to further generate the 
diff --git a/source/slang/slang-ir-validate.cpp b/source/slang/slang-ir-validate.cpp
index d0948fbb1..2973e1ee5 100644
--- a/source/slang/slang-ir-validate.cpp
+++ b/source/slang/slang-ir-validate.cpp
@@ -346,7 +346,7 @@ namespace Slang
         // validate its children.
         validateIRInstChildren(context, inst);
 
-        if (auto code = as<IRGlobalValueWithCode>(inst))
+        if (as<IRGlobalValueWithCode>(inst))
             context->domTree = nullptr;
     }
 
diff --git a/source/slang/slang-lower-to-ir.cpp b/source/slang/slang-lower-to-ir.cpp
index 034178dca..b3a309d5a 100644
--- a/source/slang/slang-lower-to-ir.cpp
+++ b/source/slang/slang-lower-to-ir.cpp
@@ -2124,7 +2124,7 @@ void addVarDecorations(
         {
             builder->addFormatDecoration(inst, formatAttr->format);
         }
-        else if(auto payloadMod = as<HLSLPayloadModifier>(mod))
+        else if(as<HLSLPayloadModifier>(mod))
         {
             builder->addSimpleDecoration<IRHLSLMeshPayloadDecoration>(inst);
         }