Arrays are permitted to be zero-length in some situations.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@135036 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 0 insertions, 26 deletions

diff --git a/lib/CodeGen/CGExprCXX.cpp b/lib/CodeGen/CGExprCXX.cpp
index 49aab66268..e3c6a8f978 100644
--- a/lib/CodeGen/CGExprCXX.cpp
+++ b/lib/CodeGen/CGExprCXX.cpp
@@ -798,36 +798,10 @@ static void EmitNewInitializer(CodeGenFunction &CGF, const CXXNewExpr *E,
         RequiresZeroInitialization = true;
       }
 
-      // It's legal for NumElements to be zero, but
-      // EmitCXXAggrConstructorCall doesn't handle that, so we need to.
-      llvm::BranchInst *br = 0;
-
-      // Optimize for a constant count.
-      llvm::ConstantInt *constantCount
-        = dyn_cast<llvm::ConstantInt>(NumElements);
-      if (constantCount) {
-        // Just skip out if the constant count is zero.
-        if (constantCount->isZero()) return;
-
-      // Otherwise, emit the check.
-      } else {
-        llvm::BasicBlock *loopBB = CGF.createBasicBlock("new.ctorloop");
-        llvm::Value *iszero = CGF.Builder.CreateIsNull(NumElements, "isempty");
-        br = CGF.Builder.CreateCondBr(iszero, loopBB, loopBB);
-        CGF.EmitBlock(loopBB);
-      }
-      
       CGF.EmitCXXAggrConstructorCall(Ctor, NumElements, NewPtr, 
                                      E->constructor_arg_begin(), 
                                      E->constructor_arg_end(),
                                      RequiresZeroInitialization);
-
-      // Patch the earlier check to skip over the loop.
-      if (br) {
-        assert(CGF.Builder.GetInsertBlock()->empty());
-        br->setSuccessor(0, CGF.Builder.GetInsertBlock());
-      }
-
       return;
     } else if (E->getNumConstructorArgs() == 1 &&
                isa<ImplicitValueInitExpr>(E->getConstructorArg(0))) {