[Mlir-commits] [mlir] [MLIR][Conversion] Add convert-xevm-to-llvm pass. (PR #147375)

[Adam Siemieniuk]

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+//===-- XeVMToLLVM.cpp - XeVM to LLVM dialect conversion --------*- C++ -*-===//
+//
+// This file is licensed 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 "mlir/Conversion/XeVMToLLVM/XeVMToLLVM.h"
+
+#include "mlir/Conversion/ConvertToLLVM/ToLLVMInterface.h"
+#include "mlir/Conversion/LLVMCommon/Pattern.h"
+#include "mlir/Dialect/GPU/IR/GPUDialect.h"
+#include "mlir/Dialect/LLVMIR/FunctionCallUtils.h"
+#include "mlir/Dialect/LLVMIR/LLVMDialect.h"
+#include "mlir/Dialect/LLVMIR/XeVMDialect.h"
+#include "mlir/Pass/Pass.h"
+#include "mlir/Support/LLVM.h"
+#include "llvm/Support/FormatVariadic.h"
+
+#include "mlir/IR/BuiltinTypes.h"
+#include "mlir/IR/Types.h"
+
+#include "llvm/ADT/TypeSwitch.h"
+
+#define DEBUG_TYPE "xevm-to-llvm"
+
+namespace mlir {
+#define GEN_PASS_DEF_CONVERTXEVMTOLLVMPASS
+#include "mlir/Conversion/Passes.h.inc"
+} // namespace mlir
+
+using namespace mlir;
+using namespace xevm;
+
+namespace {
+
+struct LLVMFuncAttributeOptions {
+  bool isConvergent = false;
+  bool isNoUnwind = false;
+  bool isWillReturn = false;
+  LLVM::MemoryEffectsAttr memEffectsAttr{};
+};
+static constexpr LLVMFuncAttributeOptions noUnwindAttrs = {
+    false, true, false, {}};
+static constexpr LLVMFuncAttributeOptions noUnwindWillReturnAttrs = {
+    false, true, true, {}};
+static constexpr LLVMFuncAttributeOptions convergentNoUnwindWillReturnAttrs = {
+    true, true, true, {}};
+
+std::string getTypeMangling(Type ty, bool isUnsigned = false) {
+  return TypeSwitch<Type, std::string>(ty)
+      .Case([isUnsigned](VectorType ty) -> std::string {
+        return "Dv" + std::to_string(ty.getNumElements()) + "_" +
+               getTypeMangling(ty.getElementType(), isUnsigned);
+      })
+      .Case([](Float16Type) -> std::string { return "Dh"; })
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adam-smnk wrote:

What about `tf32`?

https://github.com/llvm/llvm-project/pull/147375