Add ToolChain path support for linker on Slackware.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@129704 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Driver/ToolChains.cpp b/lib/Driver/ToolChains.cpp
index 868165a..1b39398 100644
--- a/lib/Driver/ToolChains.cpp
+++ b/lib/Driver/ToolChains.cpp
@@ -1323,6 +1323,9 @@
     else if (!llvm::sys::fs::exists("/usr/lib/gcc/i586-suse-linux", Exists) &&
              Exists)
       GccTriple = "i586-suse-linux";
+    else if (!llvm::sys::fs::exists("/usr/lib/gcc/i486-slackware-linux", Exists)
+            && Exists)
+      GccTriple = "i486-slackware-linux";
   } else if (Arch == llvm::Triple::ppc) {
     if (!llvm::sys::fs::exists("/usr/lib/powerpc-linux-gnu", Exists) && Exists)
       GccTriple = "powerpc-linux-gnu";