Pass -fno-math-builtin from the Clang driver to -cc1 for the l32 arch.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@187061 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Driver/Tools.cpp b/lib/Driver/Tools.cpp
index 83aab8d..28bf5dd 100644
--- a/lib/Driver/Tools.cpp
+++ b/lib/Driver/Tools.cpp
@@ -3476,6 +3476,13 @@
                    options::OPT_fno_apple_pragma_pack, false))
     CmdArgs.push_back("-fapple-pragma-pack");
 
+  // le32-specific flags: 
+  //  -fno-math-builtin: clang should not convert math builtins to intrinsics
+  //                     by default.
+  if (getToolChain().getArch() == llvm::Triple::le32) {
+    CmdArgs.push_back("-fno-math-builtin");
+  }
+
   // Default to -fno-builtin-str{cat,cpy} on Darwin for ARM.
   //
   // FIXME: This is disabled until clang -cc1 supports -fno-builtin-foo. PR4941.