Removed pass dependency from GenTTI

Removed Dummy pass dependency

Author: dguzhaev

IGC/Compiler/CISACodeGen/ShaderCodeGen.cpp

@@ -405,9 +405,8 @@ void AddLegalizationPasses(CodeGenContext& ctx, IGCPassManager& mpm, PSSignature
         IGC_IS_FLAG_ENABLED(ForceAllPrivateMemoryToSLM) ||
         IGC_IS_FLAG_ENABLED(ForcePrivateMemoryToSLMOnBuffers))
     {
-        DummyPass* dummypass = new DummyPass();
         TargetIRAnalysis GenTTgetIIRAnalysis([&](const Function& F) {
-            GenIntrinsicsTTIImpl GTTI(&ctx, dummypass);
+            GenIntrinsicsTTIImpl GTTI(&ctx);
             return TargetTransformInfo(GTTI);
             });
         mpm.add(new TargetTransformInfoWrapperPass(GenTTgetIIRAnalysis));
@@ -1252,10 +1251,8 @@ void OptimizeIR(CodeGenContext* const pContext)
         mpm.add(new MetaDataUtilsWrapper(pMdUtils, pContext->getModuleMetaData()));
 
         mpm.add(new CodeGenContextWrapper(pContext));
-        DummyPass* dummypass = new DummyPass();
-        mpm.add(dummypass);
             TargetIRAnalysis GenTTgetIIRAnalysis([&](const Function& F) {
-            GenIntrinsicsTTIImpl GTTI(pContext, dummypass);
+            GenIntrinsicsTTIImpl GTTI(pContext);
             return TargetTransformInfo(GTTI);
         });
 

IGC/Compiler/GenTTI.cpp

@@ -32,12 +32,6 @@ using namespace IGC;
 
 namespace llvm {
 
-    char DummyPass::ID = 0;
-    void initializeDummyPassPass(PassRegistry& Registry);
-    DummyPass::DummyPass() : ImmutablePass(ID) {
-        initializeDummyPassPass(*PassRegistry::getPassRegistry());
-    }
-
     bool GenIntrinsicsTTIImpl::isLoweredToCall(const Function* F)
     {
         if (GenISAIntrinsic::isIntrinsic(F))
@@ -651,6 +645,3 @@ namespace llvm {
 #endif
 
 } // namespace llvm
-// Register the basic pass.
-INITIALIZE_PASS(DummyPass, "gen-tti-dummy-pass",
-    "Dummy Pass for GenTTIImpl", false, true)

IGC/Compiler/GenTTI.h

@@ -17,12 +17,6 @@ SPDX-License-Identifier: MIT
 
 namespace llvm
 {
-    class DummyPass : public ImmutablePass
-    {
-    public:
-        static char ID;
-        DummyPass();
-    };
 
     // This implementation allows us to define our own costs for the GenIntrinsics
     // Did not use BasicTTIImplBase because the overloaded constructors have TragetMachine as an argument,
@@ -33,12 +27,9 @@ namespace llvm
         typedef TargetTransformInfo TTI;
         friend BaseT;
         IGC::CodeGenContext* ctx;
-        DummyPass* dummyPass;
     public:
-        GenIntrinsicsTTIImpl(IGC::CodeGenContext* pCtx, DummyPass* pDummyPass) :
-            BaseT(pCtx->getModule()->getDataLayout()), ctx(pCtx) {
-            dummyPass = pDummyPass;
-        }
+        GenIntrinsicsTTIImpl(IGC::CodeGenContext* pCtx) :
+            BaseT(pCtx->getModule()->getDataLayout()), ctx(pCtx) {}
 
         bool shouldBuildLookupTables();