Loop vectorizer bloats code in some cases

[jbush001]

Loop vectorizer bloats code in some cases

[jbush001]

NyuziToolchain/lib/Transforms/Vectorize/LoopVectorize.cpp

[jbush001]

This is currently disabled by default in tools/clang/lib/Driver/ToolChains/Clang.cpp.

@@@ -4447,6 -4852,6 +4854,10 @@@ void Clang::ConstructJob(Compilation &C
    // selected. For optimization levels that want vectorization we use the alias
    // option to simplify the hasFlag logic.
    bool EnableVec = shouldEnableVectorizerAtOLevel(Args, false);
++
++  // XXX Nyuzi
++  EnableVec = false;
++
    OptSpecifier VectorizeAliasOption =
        EnableVec ? options::OPT_O_Group : options::OPT_fvectorize;
    if (Args.hasFlag(options::OPT_fvectorize, VectorizeAliasOption,