[llvm-ar] Fix lib.exe detection when running within MSVC toolchain

Differential Revision: https://reviews.llvm.org/D44808

llvm-svn: 329658

1 files changed, 6 insertions, 6 deletions

diff --git a/llvm/tools/llvm-ar/llvm-ar.cpp b/llvm/tools/llvm-ar/llvm-ar.cpp
index 0775aff00d2..0a8d59c7ee2 100644
--- a/llvm/tools/llvm-ar/llvm-ar.cpp
+++ b/llvm/tools/llvm-ar/llvm-ar.cpp
@@ -109,9 +109,9 @@ MODIFIERS (generic):
 )";
 
 void printHelpMessage() {
-  if (Stem.find("ranlib") != StringRef::npos)
+  if (Stem.find_lower("ranlib") != StringRef::npos)
     outs() << RanlibHelp;
-  else if (Stem.find("ar") != StringRef::npos)
+  else if (Stem.find_lower("ar") != StringRef::npos)
     outs() << ArHelp;
 }
 
@@ -960,16 +960,16 @@ int main(int argc, char **argv) {
   llvm::InitializeAllAsmParsers();
 
   Stem = sys::path::stem(ToolName);
-  if (Stem.find("dlltool") != StringRef::npos)
+  if (Stem.find_lower("dlltool") != StringRef::npos)
     return dlltoolDriverMain(makeArrayRef(argv, argc));
 
-  if (Stem.find("ranlib") != StringRef::npos)
+  if (Stem.find_lower("ranlib") != StringRef::npos)
     return ranlib_main(argc, argv);
 
-  if (Stem.find("lib") != StringRef::npos)
+  if (Stem.find_lower("lib") != StringRef::npos)
     return libDriverMain(makeArrayRef(argv, argc));
 
-  if (Stem.find("ar") != StringRef::npos)
+  if (Stem.find_lower("ar") != StringRef::npos)
     return ar_main(argc, argv);
   fail("Not ranlib, ar, lib or dlltool!");
 }