Don't open the file again in the gold plugin. To be able to do this, update

MemoryBuffer::getOpenFile to not close the file descriptor.

llvm-svn: 125128

1 files changed, 8 insertions, 0 deletions

diff --git a/llvm/include/llvm-c/lto.h b/llvm/include/llvm-c/lto.h
index 08c12af40ae..1c42ce0cec7 100644
--- a/llvm/include/llvm-c/lto.h
+++ b/llvm/include/llvm-c/lto.h
@@ -18,6 +18,7 @@
 
 #include <stdbool.h>
 #include <stddef.h>
+#include <unistd.h>
 
 #define LTO_API_VERSION 4
 
@@ -121,6 +122,13 @@ lto_module_create(const char* path);
 extern lto_module_t
 lto_module_create_from_memory(const void* mem, size_t length);
 
+/**
+ * Loads an object file from disk. The seek point of fd is not preserved.
+ * Returns NULL on error (check lto_get_error_message() for details).
+ */
+extern lto_module_t
+lto_module_create_from_fd(int fd, const char *path, off_t size);
+
 
 /**
  * Frees all memory internally allocated by the module.