[llvm] [SPIRV] Add logic for OpGenericCastToPtrExplicit rewriting (PR #146596)

[Justin Cai via llvm-commits]

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@@ -0,0 +1,40 @@
+//===- SPIRVTargetTransformInfo.cpp - SPIR-V specific TTI -------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "SPIRVTargetTransformInfo.h"
+#include "llvm/IR/IntrinsicsSPIRV.h"
+
+using namespace llvm;
+
+bool llvm::SPIRVTTIImpl::collectFlatAddressOperands(
+    SmallVectorImpl<int> &OpIndexes, Intrinsic::ID IID) const {
+  switch (IID) {
+  case Intrinsic::spv_generic_cast_to_ptr_explicit:
+    OpIndexes.push_back(0);
+    return true;
+  default:
+    return false;
+  }
+}
+
+Value *llvm::SPIRVTTIImpl::rewriteIntrinsicWithAddressSpace(IntrinsicInst *II,
+                                                            Value *OldV,
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jzc wrote:

It's a virtual function, so I don't think so

https://github.com/llvm/llvm-project/pull/146596