Add support for generating profiles in a given directory.

When the file is initialized, this patch checks whether the path
specifies a directory. If so, it creates the directory tree before
truncating the file.

Use default.profdata instead of pgo-data for default indexed profile name.

llvm-svn: 241824

1 files changed, 35 insertions, 0 deletions

diff --git a/compiler-rt/lib/profile/InstrProfilingUtil.c b/compiler-rt/lib/profile/InstrProfilingUtil.c
new file mode 100644
index 00000000000..e146dfca83c
--- /dev/null
+++ b/compiler-rt/lib/profile/InstrProfilingUtil.c
@@ -0,0 +1,35 @@
+/*===- InstrProfilingUtil.c - Support library for PGO instrumentation -----===*\
+|*
+|*                     The LLVM Compiler Infrastructure
+|*
+|* This file is distributed under the University of Illinois Open Source
+|* License. See LICENSE.TXT for details.
+|*
+\*===----------------------------------------------------------------------===*/
+
+#include "InstrProfilingUtil.h"
+
+#ifdef _WIN32
+#include <direct.h>
+#elif I386_FREEBSD
+int mkdir(const char*, unsigned short);
+#else
+#include <sys/stat.h>
+#include <sys/types.h>
+#endif
+
+__attribute__((visibility("hidden")))
+void __llvm_profile_recursive_mkdir(char *path) {
+  int i;
+
+  for (i = 1; path[i] != '\0'; ++i) {
+    if (path[i] != '/') continue;
+    path[i] = '\0';
+#ifdef _WIN32
+    _mkdir(path);
+#else
+    mkdir(path, 0755);  /* Some of these will fail, ignore it. */
+#endif
+    path[i] = '/';
+  }
+}