[llvm] [SPIRV] Implement LLVM IR and backend for typed buffer counters (PR #161425)

[Marcos Maronas via llvm-commits]

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@@ -3479,6 +3489,130 @@ bool SPIRVInstructionSelector::selectHandleFromBinding(Register &ResVReg,
                                   *cast<GIntrinsic>(&I), I);
 }
 
+bool SPIRVInstructionSelector::selectCounterHandleFromBinding(
+    Register &ResVReg, const SPIRVType *ResType, MachineInstr &I) const {
+  auto &Intr = cast<GIntrinsic>(I);
+  assert(Intr.getIntrinsicID() ==
+         Intrinsic::spv_resource_counterhandlefrombinding);
+
+  // Extract information from the intrinsic call
+  Register MainHandleReg = Intr.getOperand(2).getReg();
+  auto *MainHandleDef = cast<GIntrinsic>(getVRegDef(*MRI, MainHandleReg));
+  assert(MainHandleDef->getIntrinsicID() ==
+         Intrinsic::spv_resource_handlefrombinding);
+
+  uint32_t Set = getIConstVal(Intr.getOperand(4).getReg(), MRI);
+  uint32_t Binding = getIConstVal(Intr.getOperand(3).getReg(), MRI);
+  uint32_t ArraySize = getIConstVal(MainHandleDef->getOperand(4).getReg(), MRI);
+  Register IndexReg = MainHandleDef->getOperand(5).getReg();
+  bool IsNonUniform = false;
+  std::string CounterName =
+      getStringValueFromReg(MainHandleDef->getOperand(6).getReg(), *MRI) +
+      ".counter";
+
+  // Create the counter variable
----------------
maarquitos14 wrote:

```suggestion
  // Create the counter variable.
```

https://github.com/llvm/llvm-project/pull/161425