appendSuffix: don't append a dot when the suffix is empty.

Additionally, move the implementation of appendSuffix to Path.cpp: it is
platform-independent.

llvm-svn: 118089

1 files changed, 15 insertions, 0 deletions

diff --git a/llvm/lib/System/Path.cpp b/llvm/lib/System/Path.cpp
index 8fc4153acb1..5d8de656612 100644
--- a/llvm/lib/System/Path.cpp
+++ b/llvm/lib/System/Path.cpp
@@ -196,6 +196,21 @@ StringRef Path::GetDLLSuffix() {
 }
 
 bool
+Path::appendSuffix(StringRef suffix) {
+  if (!suffix.empty()) {
+    std::string save(path);
+    path.append(".");
+    path.append(suffix);
+    if (!isValid()) {
+      path = save;
+      return false;
+    }
+  }
+
+  return true;
+}
+
+bool
 Path::isBitcodeFile() const {
   std::string actualMagic;
   if (!getMagicNumber(actualMagic, 4))