MCDwarfLineTableheader::tryGetFile : replace a loop with llvm::find

Note, `DirIndex++` below is incorrect for DWARF 5, but it can be fixed
later after the file index is fixed.

llvm-svn: 358251

1 files changed, 1 insertions, 5 deletions

diff --git a/llvm/lib/MC/MCDwarf.cpp b/llvm/lib/MC/MCDwarf.cpp
index a95d97b70d9..262c520a06a 100644
--- a/llvm/lib/MC/MCDwarf.cpp
+++ b/llvm/lib/MC/MCDwarf.cpp
@@ -606,11 +606,7 @@ MCDwarfLineTableHeader::tryGetFile(StringRef &Directory,
     // For FileNames with no directories a DirIndex of 0 is used.
     DirIndex = 0;
   } else {
-    DirIndex = 0;
-    for (unsigned End = MCDwarfDirs.size(); DirIndex < End; DirIndex++) {
-      if (Directory == MCDwarfDirs[DirIndex])
-        break;
-    }
+    DirIndex = llvm::find(MCDwarfDirs, Directory) - MCDwarfDirs.begin();
     if (DirIndex >= MCDwarfDirs.size())
       MCDwarfDirs.push_back(Directory);
     // The DirIndex is one based, as DirIndex of 0 is used for FileNames with