update calls to objectsize intrinsic to match LLVM r156473
add a test for -fbounds-checking code generation

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@156474 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGExpr.cpp b/lib/CodeGen/CGExpr.cpp
index 19ee428..979454b 100644
--- a/lib/CodeGen/CGExpr.cpp
+++ b/lib/CodeGen/CGExpr.cpp
@@ -525,8 +525,9 @@
 
   llvm::Value *F = CGM.getIntrinsic(llvm::Intrinsic::objectsize, IntPtrTy);
 
-  llvm::Value *Arg = Builder.getFalse();
-  llvm::Value *C = Builder.CreateCall2(F, Address, Arg);
+  llvm::Value *Min = Builder.getFalse();
+  llvm::Value *Runtime = Builder.getInt32(BoundsChecking);
+  llvm::Value *C = Builder.CreateCall3(F, Address, Min, Runtime);
   llvm::BasicBlock *Cont = createBasicBlock();
   Builder.CreateCondBr(Builder.CreateICmpUGE(C,
                                         llvm::ConstantInt::get(IntPtrTy, Size)),