microsoft: Add CLC frontend and kernel/compute support to DXIL converter

This adds a standalone library which can convert through the pipeline of
OpenCL C -> SPIR -> SPIR-V -> NIR -> DXIL. It can add in the libclc
implementations of various library functions in the NIR phase, and
also massages the NIR to shift it more towards graphics-style compute.

This is leveraged by the out-of-tree OpenCLOn12 runtime
(https://github.com/microsoft/OpenCLOn12).

This is the combination of a lot of commits from our development branch,
containing code by several authors.

Co-authored-by: Boris Brezillon <boris.brezillon@collabora.com>
Co-authored-by: Daniel Stone <daniels@collabora.com>
Co-authored-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Acked-by: Jason Ekstrand <jason@jlekstrand.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7565>

src/microsoft/clc/clc_helpers.h

@@ -0,0 +1,81 @@
+/*
+ * Copyright © Microsoft Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#ifndef CLC_TO_NIR_H
+#define CLC_TO_NIR_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "nir_types.h"
+
+#include "clc_compiler.h"
+#include "util/u_string.h"
+
+#include <assert.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdint.h>
+
+const struct clc_kernel_info *
+clc_spirv_get_kernels_info(const struct spirv_binary *spvbin,
+                           unsigned *num_kernels);
+
+void
+clc_free_kernels_info(const struct clc_kernel_info *kernels,
+                      unsigned num_kernels);
+
+int
+clc_to_spirv(const struct clc_compile_args *args,
+             struct spirv_binary *spvbin,
+             const struct clc_logger *logger);
+
+int
+clc_link_spirv_binaries(const struct clc_linker_args *args,
+                        struct spirv_binary *dst_bin,
+                        const struct clc_logger *logger);
+
+void
+clc_dump_spirv(const struct spirv_binary *spvbin, FILE *f);
+
+void
+clc_free_spirv_binary(struct spirv_binary *spvbin);
+
+#define clc_log(logger, level, fmt, ...) do {        \
+      if (!logger || !logger->level) break;          \
+      char *msg = NULL;                              \
+      asprintf(&msg, fmt, __VA_ARGS__);              \
+      assert(msg);                                   \
+      logger->level(logger->priv, msg);              \
+      free(msg);                                     \
+   } while (0)
+
+#define clc_error(logger, fmt, ...) clc_log(logger, error, fmt, __VA_ARGS__)
+#define clc_warning(logger, fmt, ...) clc_log(logger, warning, fmt, __VA_ARGS__)
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif