Revert 347294, it turned many bots on lab.llvm.org:8011/console red.

llvm-svn: 347314

1 files changed, 0 insertions, 20 deletions

diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp
index 4e639e98290..5291dc9a488 100644
--- a/clang/lib/CodeGen/CGBuiltin.cpp
+++ b/clang/lib/CodeGen/CGBuiltin.cpp
@@ -1926,26 +1926,6 @@ RValue CodeGenFunction::EmitBuiltinExpr(const GlobalDecl GD, unsigned BuiltinID,
   case Builtin::BI__builtin_rotateright64:
     return emitRotate(E, true);
 
-  case Builtin::BI__builtin_constant_p: {
-    llvm::Type *ResultType = ConvertType(E->getType());
-    if (CGM.getCodeGenOpts().OptimizationLevel == 0)
-      // At -O0, we don't perform inlining, so we don't need to delay the
-      // processing.
-      return RValue::get(ConstantInt::get(ResultType, 0));
-    if (auto *DRE = dyn_cast<DeclRefExpr>(E->getArg(0)->IgnoreImplicit())) {
-      auto DREType = DRE->getType();
-      if (DREType->isAggregateType() || DREType->isFunctionType())
-        return RValue::get(ConstantInt::get(ResultType, 0));
-    }
-    Value *ArgValue = EmitScalarExpr(E->getArg(0));
-    llvm::Type *ArgType = ArgValue->getType();
-
-    Value *F = CGM.getIntrinsic(Intrinsic::is_constant, ArgType);
-    Value *Result = Builder.CreateCall(F, ArgValue);
-    if (Result->getType() != ResultType)
-      Result = Builder.CreateIntCast(Result, ResultType, /*isSigned*/true);
-    return RValue::get(Result);
-  }
   case Builtin::BI__builtin_object_size: {
     unsigned Type =
         E->getArg(1)->EvaluateKnownConstInt(getContext()).getZExtValue();