ac: add a standalone IB parser program

Reviewed-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/24759>

src/amd/common/ac_parse_ib.c

@@ -0,0 +1,63 @@
+/*
+ * Copyright © 2023 Advanced Micro Devices, Inc.
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+#include "ac_debug.h"
+#include <string.h>
+#include <stdlib.h>
+
+int main(int argc, char **argv)
+{
+   if (argc < 3) {
+      fprintf(stderr, "Usage: [LLVM processor] [IB filenames]\n");
+      return 1;
+   }
+
+   const char *gpu = argv[1];
+   enum amd_gfx_level gfx_level;
+   enum radeon_family family = CHIP_UNKNOWN;
+
+   for (unsigned i = 0; i < CHIP_LAST; i++) {
+      if (!strcmp(gpu, ac_get_llvm_processor_name(i))) {
+         family = i;
+         gfx_level = ac_get_gfx_level(i);
+         break;
+      }
+   }
+
+   if (family == CHIP_UNKNOWN) {
+      fprintf(stderr, "Unknown LLVM processor.\n");
+      return 1;
+   }
+
+   for (unsigned i = 2; i < argc; i++) {
+      const char *filename = argv[i];
+
+      FILE *f = fopen(filename, "r");
+      if (!f) {
+         fprintf(stderr, "Can't open IB: %s\n", filename);
+         continue;
+      }
+
+      fseek(f, 0, SEEK_END);
+      int size = ftell(f);
+      fseek(f, 0, SEEK_SET);
+
+      uint32_t *ib = (uint32_t*)malloc(size);
+
+      if (fread(ib, size, 1, f) != 1) {
+         fprintf(stderr, "Can't read IB: %s\n", filename);
+         fclose(f);
+         free(ib);
+         continue;
+      }
+      fclose(f);
+
+      ac_parse_ib(stdout, ib, size / 4, NULL, 0, filename, gfx_level, family, NULL, NULL);
+      free(ib);
+   }
+
+   return 0;
+}

src/amd/common/meson.build

@@ -132,6 +132,15 @@ libamd_common = static_library(
 
 idep_amdgfxregs_h = declare_dependency(sources : [amdgfxregs_h])
 
+executable(
+  'ac_parse_ib',
+  ['ac_parse_ib.c'],
+  link_with: [libamd_common],
+  include_directories : [
+    inc_amd, inc_include, inc_src,
+  ],
+  dependencies : [idep_amdgfxregs_h, idep_mesautil, idep_nir_headers],
+)
 
 if with_tests and not with_platform_windows
   test(