Revert "Add CodeGen support for adding cpu attributes on functions based on"

This breaks CodeGen for an internal target. I'll get repro instructions
to you.

llvm-svn: 232930

1 files changed, 0 insertions, 21 deletions

diff --git a/clang/lib/CodeGen/CGCall.cpp b/clang/lib/CodeGen/CGCall.cpp
index 4b4fa7cd780..3cb72bd1512 100644
--- a/clang/lib/CodeGen/CGCall.cpp
+++ b/clang/lib/CodeGen/CGCall.cpp
@@ -31,7 +31,6 @@
 #include "llvm/IR/InlineAsm.h"
 #include "llvm/IR/Intrinsics.h"
 #include "llvm/Transforms/Utils/Local.h"
-#include <sstream>
 using namespace clang;
 using namespace CodeGen;
 
@@ -1476,26 +1475,6 @@ void CodeGenModule::ConstructAttributeList(const CGFunctionInfo &FI,
 
     if (!CodeGenOpts.StackRealignment)
       FuncAttrs.addAttribute("no-realign-stack");
-
-    // Add target-cpu and target-features work if they differ from the defaults.
-    std::string &CPU = getTarget().getTargetOpts().CPU;
-    if (CPU != "" && CPU != getTarget().getTriple().getArchName())
-      FuncAttrs.addAttribute("target-cpu", getTarget().getTargetOpts().CPU);
-
-    // TODO: FeaturesAsWritten gets us the features on the command line,
-    // for canonicalization purposes we might want to avoid putting features
-    // in the target-features set if we know it'll be one of the default
-    // features in the backend, e.g. corei7-avx and +avx.
-    std::vector<std::string> &Features =
-      getTarget().getTargetOpts().FeaturesAsWritten;
-    if (!Features.empty()) {
-      std::stringstream S;
-      std::copy(Features.begin(), Features.end(),
-                std::ostream_iterator<std::string>(S, ","));
-      // The drop_back gets rid of the trailing space.
-      FuncAttrs.addAttribute("target-features",
-                             StringRef(S.str()).drop_back(1));
-    }
   }
 
   ClangToLLVMArgMapping IRFunctionArgs(getContext(), FI);