Subzero: Basic Block Profiler.

runtime/szrt_profiler.c

Index: runtime/szrt_profiler.c
diff --git a/runtime/szrt_profiler.c b/runtime/szrt_profiler.c
new file mode 100644
index 0000000000000000000000000000000000000000..c377f288531ee1b3ede0f2d8414b7aefc47f10b2
--- /dev/null
+++ b/runtime/szrt_profiler.c
@@ -0,0 +1,58 @@
+#include <stdint.h>
+#include <stdio.h>
+
+struct BlockProfileInfo {
+  uint64_t Counter;
+  const char *const BlockName;
+} __attribute__((aligned(8)));
+
+extern const struct BlockProfileInfo *block_profile_info;

[Jim Stichnoth, 2015/06/08 23:45:31]

For this and profile_summary, you may want to try to avoid name conflicts (not
sure if the name conflict possibility goes away in a pexe where the symbols are
almost all internal).

Maybe use __Sz as a prefix, like the other parts of the runtime?

[John, 2015/06/09 15:36:17]

Done.

+
+const char SubzeroLogo[] =

[Jim Stichnoth, 2015/06/08 23:45:31]

static?

[John, 2015/06/09 15:36:18]

Done.

+    "\n"
+    "\n"
+    "__________________________________________________________________________"
+    "____________________________\n"
+    " _____/\\\\\\\\\\\\\\\\\\\\\\__________________/"
+    "\\\\\\_______________________________________________________________\n"
+    "  "
+    "___/\\\\\\/////////\\\\\\_______________\\/"
+    "\\\\\\_______________________________________________________________\n"
+    "   "
+    "__\\//\\\\\\______\\///________________\\/"
+    "\\\\\\_______________________________________________________________\n"
+    "    "
+    "___\\////\\\\\\__________/\\\\\\____/\\\\\\_\\/\\\\\\_________/"
+    "\\\\\\\\\\\\\\\\\\\\\\_____/\\\\\\\\\\\\\\\\___/\\\\/\\\\\\\\\\\\\\____/"
+    "\\\\\\\\\\____\n"
+    "     "
+    "______\\////\\\\\\______\\/\\\\\\___\\/\\\\\\_\\/\\\\\\\\\\\\\\\\\\__\\///"
+    "////\\\\\\/____/\\\\\\/////\\\\\\_\\/\\\\\\/////\\\\\\_/\\\\\\///"
+    "\\\\\\__\n"
+    "      "
+    "_________\\////\\\\\\___\\/\\\\\\___\\/\\\\\\_\\/\\\\\\////\\\\\\______/"
+    "\\\\\\/_____/\\\\\\\\\\\\\\\\\\\\\\__\\/\\\\\\__\\///__/\\\\\\__\\//"
+    "\\\\\\_\n"
+    "       "
+    "__/\\\\\\______\\//\\\\\\__\\/\\\\\\___\\/\\\\\\_\\/\\\\\\__\\/\\\\\\____/"
+    "\\\\\\/______\\//\\\\///////___\\/\\\\\\_______\\//\\\\\\__/\\\\\\__\n"
+    "        "
+    "_\\///\\\\\\\\\\\\\\\\\\\\\\/___\\//\\\\\\\\\\\\\\\\\\__\\/"
+    "\\\\\\\\\\\\\\\\\\___/\\\\\\\\\\\\\\\\\\\\\\__\\//\\\\\\\\\\\\\\\\\\\\_\\/"
+    "\\\\\\________\\///\\\\\\\\\\/___\n"
+    "         "
+    "___\\///////////______\\/////////___\\/////////___\\///////////____\\/////"
+    "/////__\\///___________\\/////_____\n"
+    "          "
+    "__________________________________________________________________________"
+    "____________________________\n"
+    "\n"
+    "\n";
+
+void profile_summary() {
+  printf("%s", SubzeroLogo);
+  for (const struct BlockProfileInfo **curr = &block_profile_info;
+       *curr != NULL; ++curr) {
+    printf("%lld\t%s\n", (*curr)->Counter, (*curr)->BlockName);
+  }
+}