vendor/llvm/llvm-release_360-r226102

1 files changed, 50 insertions, 0 deletions

diff --git a/bindings/go/llvm/bitreader.go b/bindings/go/llvm/bitreader.go
new file mode 100644
index 0000000000000..98112a99dd3b7
--- /dev/null
+++ b/bindings/go/llvm/bitreader.go
@@ -0,0 +1,50 @@
+//===- bitreader.go - Bindings for bitreader ------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file defines bindings for the bitreader component.
+//
+//===----------------------------------------------------------------------===//
+
+package llvm
+
+/*
+#include "llvm-c/BitReader.h"
+#include <stdlib.h>
+*/
+import "C"
+
+import (
+	"errors"
+	"unsafe"
+)
+
+// ParseBitcodeFile parses the LLVM IR (bitcode) in the file with the
+// specified name, and returns a new LLVM module.
+func ParseBitcodeFile(name string) (Module, error) {
+	var buf C.LLVMMemoryBufferRef
+	var errmsg *C.char
+	var cfilename *C.char = C.CString(name)
+	defer C.free(unsafe.Pointer(cfilename))
+	result := C.LLVMCreateMemoryBufferWithContentsOfFile(cfilename, &buf, &errmsg)
+	if result != 0 {
+		err := errors.New(C.GoString(errmsg))
+		C.free(unsafe.Pointer(errmsg))
+		return Module{}, err
+	}
+	defer C.LLVMDisposeMemoryBuffer(buf)
+
+	var m Module
+	if C.LLVMParseBitcode(buf, &m.C, &errmsg) == 0 {
+		return m, nil
+	}
+
+	err := errors.New(C.GoString(errmsg))
+	C.free(unsafe.Pointer(errmsg))
+	return Module{}, err
+}