[llvm] [Xtensa] Implement base CallConvention. (PR #83280)

[Sergei Barannikov via llvm-commits]

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@@ -0,0 +1,205 @@
+//===- XtensaConstantPoolValue.cpp - Xtensa constantpool value ------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements the Xtensa specific constantpool value class.
+//
+//===----------------------------------------------------------------------===//
+
+#include "XtensaConstantPoolValue.h"
+#include "llvm/ADT/FoldingSet.h"
+#include "llvm/CodeGen/MachineBasicBlock.h"
+#include "llvm/IR/Constant.h"
+#include "llvm/IR/Constants.h"
+#include "llvm/IR/GlobalValue.h"
+#include "llvm/IR/Type.h"
+#include "llvm/Support/raw_ostream.h"
+#include <cstdlib>
+using namespace llvm;
+
+XtensaConstantPoolValue::XtensaConstantPoolValue(
+    Type *Ty, unsigned id, XtensaCP::XtensaCPKind kind,
+    XtensaCP::XtensaCPModifier modifier)
+    : MachineConstantPoolValue(Ty), LabelId(id), Kind(kind),
+      Modifier(modifier) {}
+
+XtensaConstantPoolValue::XtensaConstantPoolValue(
+    LLVMContext &C, unsigned id, XtensaCP::XtensaCPKind kind,
+    XtensaCP::XtensaCPModifier modifier)
+    : MachineConstantPoolValue((Type *)Type::getInt32Ty(C)), LabelId(id),
+      Kind(kind), Modifier(modifier) {}
+
+XtensaConstantPoolValue::~XtensaConstantPoolValue() {}
+
+StringRef XtensaConstantPoolValue::getModifierText() const {
+  switch (Modifier) {
+  case XtensaCP::no_modifier:
+    return "";
+  case XtensaCP::TPOFF:
+    return "@TPOFF";
+  }
+  report_fatal_error("Unknown modifier!");
+}
+
+int XtensaConstantPoolValue::getExistingMachineCPValue(MachineConstantPool *CP,
+                                                       Align Alignment) {
+  report_fatal_error("Shouldn't be calling this directly!");
+}
+
+void XtensaConstantPoolValue::addSelectionDAGCSEId(FoldingSetNodeID &ID) {
+  ID.AddInteger(LabelId);
+}
+
+bool XtensaConstantPoolValue::hasSameValue(XtensaConstantPoolValue *ACPV) {
+  if (ACPV->Kind == Kind) {
+    if (ACPV->LabelId == LabelId)
+      return true;
+  }
+  return false;
+}
+
+void XtensaConstantPoolValue::dump() const { errs() << "  " << *this; }
+
+void XtensaConstantPoolValue::print(raw_ostream &O) const {}
+
+//===----------------------------------------------------------------------===//
+// XtensaConstantPoolConstant
+//===----------------------------------------------------------------------===//
+
+XtensaConstantPoolConstant::XtensaConstantPoolConstant(
+    const Constant *C, unsigned ID, XtensaCP::XtensaCPKind Kind)
+    : XtensaConstantPoolValue((Type *)C->getType(), ID, Kind), CVal(C) {}
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s-barannikov wrote:

This this cast necessary?

https://github.com/llvm/llvm-project/pull/83280