[Mlir-commits] [mlir] [mlir] [Dialect] Add LibC dialect and printf op for CPU (PR #92369)

[Renato Golin]

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@@ -0,0 +1,55 @@
+//===-- AMX.td - AMX dialect operation definitions *- tablegen -*----------===//
+//
+// 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 defines the basic operations for the libc dialect.
+//
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef MLIR_DIALECT_LIBC_LIBC
+#define MLIR_DIALECT_LIBC_LIBC
+
+include "mlir/Dialect/LLVMIR/LLVMOpBase.td"
+include "mlir/Interfaces/SideEffectInterfaces.td"
+
+//===----------------------------------------------------------------------===//
+// LibC dialect definition.
+//===----------------------------------------------------------------------===//
+
+def LibC_Dialect : Dialect {
+  let name = "libc";
+  let cppNamespace = "::mlir::libc";
+  let description = [{
+ The dialect provides interfaces for the standard C library functions, to
+ enable users to call them in CPU environments if a valid standard C library
+ (like glibc) is linked. The dialect's ops are designed to be lowered to
+ function calls to the corresponding LibC functions.
+  }];
+}
+
+class LibC_Op<string mnemonic, list<Trait> traits = []> :
+  Op<LibC_Dialect, mnemonic, traits> {}
+
+def LibC_PrintfOp : LibC_Op<"printf", [MemoryEffects<[MemWrite]>]>,
+  Arguments<(ins StrAttr:$format,
+                Variadic<AnyTypeOf<[AnyInteger, Index, AnyFloat]>>:$args)> {
+  let summary = "C-style printf";
+  let description = [{
+    `cpuruntime.printf` takes a literal format string `format` and an arbitrary
----------------
rengolin wrote:

```suggestion
    `libc.printf` takes a literal format string `format` and an arbitrary
```

https://github.com/llvm/llvm-project/pull/92369