Remove Emscripten support

lib/CodeGen/TargetInfo.cpp

Index: lib/CodeGen/TargetInfo.cpp
diff --git a/lib/CodeGen/TargetInfo.cpp b/lib/CodeGen/TargetInfo.cpp
index df6192490589784a999657e12c8e7d69782b940d..d27c375fa97ffea38861a8779d91606351a6c9da 100644
--- a/lib/CodeGen/TargetInfo.cpp
+++ b/lib/CodeGen/TargetInfo.cpp
@@ -432,63 +432,6 @@ ABIArgInfo DefaultABIInfo::classifyReturnType(QualType RetTy) const {
           ABIArgInfo::getExtend() : ABIArgInfo::getDirect());
 }
 
-// @LOCALMOD-START Emscripten
-//===----------------------------------------------------------------------===//
-// Emscripten ABI Implementation
-//
-// This is a very simple ABI that relies a lot on DefaultABIInfo.
-//===----------------------------------------------------------------------===//
-
-class EmscriptenABIInfo : public DefaultABIInfo {
-public:
-  explicit EmscriptenABIInfo(CodeGen::CodeGenTypes &CGT)
-      : DefaultABIInfo(CGT) {}
-
-  ABIArgInfo classifyReturnType(QualType RetTy) const;
-  ABIArgInfo classifyArgumentType(QualType Ty) const;
-
-  // DefaultABIInfo's classifyReturnType and classifyArgumentType are
-  // non-virtual, but computeInfo is virtual, so we overload that.
-  void computeInfo(CGFunctionInfo &FI) const override {
-    FI.getReturnInfo() = classifyReturnType(FI.getReturnType());
-    for (auto &Arg : FI.arguments())
-      Arg.info = classifyArgumentType(Arg.type);
-  }
-};
-
-class EmscriptenTargetCodeGenInfo : public TargetCodeGenInfo {
-public:
-  explicit EmscriptenTargetCodeGenInfo(CodeGen::CodeGenTypes &CGT)
-      : TargetCodeGenInfo(new EmscriptenABIInfo(CGT)) {}
-};
-
-/// \brief Classify argument of given type \p Ty.
-ABIArgInfo EmscriptenABIInfo::classifyArgumentType(QualType Ty) const {
-  if (isAggregateTypeForABI(Ty)) {
-    unsigned TypeAlign = getContext().getTypeAlignInChars(Ty).getQuantity();
-    if (auto RAA = getRecordArgABI(Ty, getCXXABI()))
-      return ABIArgInfo::getIndirect(TypeAlign,
-                                     RAA == CGCXXABI::RAA_DirectInMemory);
-    return ABIArgInfo::getIndirect(TypeAlign);
-  }
-
-  // Otherwise just do the default thing.
-  return DefaultABIInfo::classifyArgumentType(Ty);
-}
-
-ABIArgInfo EmscriptenABIInfo::classifyReturnType(QualType RetTy) const {
-  if (isAggregateTypeForABI(RetTy)) {
-    // As an optimization, lower single-element structs to just return a regular
-    // value.
-    if (const Type *SeltTy = isSingleElementStruct(RetTy, getContext()))
-      return ABIArgInfo::getDirect(CGT.ConvertType(QualType(SeltTy, 0)));
-  }
-
-  // Otherwise just do the default thing.
-  return DefaultABIInfo::classifyReturnType(RetTy);
-}
-// @LOCALMOD-END Emscripten
-
 //===----------------------------------------------------------------------===//
 // le32/PNaCl bitcode ABI Implementation
 //
@@ -7046,11 +6989,6 @@ const TargetCodeGenInfo &CodeGenModule::getTargetCodeGenInfo() {
   default:
     return *(TheTargetCodeGenInfo = new DefaultTargetCodeGenInfo(Types));
 
-  // @LOCALMOD-START Emscripten
-  case llvm::Triple::asmjs:
-    return *(TheTargetCodeGenInfo = new EmscriptenTargetCodeGenInfo(Types));
-  // @LOCALMOD-END Emscripten
-
   case llvm::Triple::le32:
     return *(TheTargetCodeGenInfo = new PNaClTargetCodeGenInfo(Types));
   case llvm::Triple::mips: