Index: lib/CodeGen/CGBlocks.cpp
===================================================================
--- lib/CodeGen/CGBlocks.cpp
+++ lib/CodeGen/CGBlocks.cpp
@@ -1647,10 +1647,8 @@
 
   CGM.SetInternalFunctionAttributes(nullptr, Fn, FI);
 
-  auto NL = ApplyDebugLocation::CreateEmpty(*this);
   StartFunction(FD, C.VoidTy, Fn, FI, args);
-  // Create a scope with an artificial location for the body of this function.
-  auto AL = ApplyDebugLocation::CreateArtificial(*this);
+  ApplyDebugLocation NL{*this, blockInfo.getBlockExpr()->getLocStart()};
   llvm::Type *structPtrTy = blockInfo.StructureType->getPointerTo();
 
   Address src = GetAddrOfLocalVar(&SrcDecl);
@@ -1819,10 +1817,8 @@
 
   CGM.SetInternalFunctionAttributes(nullptr, Fn, FI);
 
-  // Create a scope with an artificial location for the body of this function.
-  auto NL = ApplyDebugLocation::CreateEmpty(*this);
   StartFunction(FD, C.VoidTy, Fn, FI, args);
-  auto AL = ApplyDebugLocation::CreateArtificial(*this);
+  ApplyDebugLocation NL{*this, blockInfo.getBlockExpr()->getLocStart()};
 
   llvm::Type *structPtrTy = blockInfo.StructureType->getPointerTo();
 
Index: test/CodeGenObjC/debug-info-blocks.m
===================================================================
--- test/CodeGenObjC/debug-info-blocks.m
+++ test/CodeGenObjC/debug-info-blocks.m
@@ -10,9 +10,10 @@
 // CHECK-NEXT: call void @llvm.dbg.declare(metadata <{ i8*, i32, i32, i8*, %struct.__block_descriptor*, %0* }>** %[[ALLOCA]], metadata ![[SELF:[0-9]+]], metadata !{{.*}})
 // CHECK-NEXT: call void @llvm.dbg.declare(metadata %1** %d, metadata ![[D:[0-9]+]], metadata !{{.*}})
 
-// rdar://problem/14386148
-// Test that we don't emit bogus line numbers for the helper functions.
-// Test that we do emit scope info for the helper functions.
+// rdar://problem/32907581
+// Test that we do emit scope info for the helper functions, and that the
+// parameters to these functions are marked as artificial (so the debugger
+// doesn't accidentally step into the function).
 // CHECK: define {{.*}} @__copy_helper_block_{{.*}}(i8*, i8*)
 // CHECK-NOT: ret
 // CHECK: call {{.*}}, !dbg ![[DBG_LINE:[0-9]+]]
@@ -23,10 +24,13 @@
 // CHECK: load {{.*}}, !dbg ![[DESTROY_LINE:[0-9]+]]
 
 // CHECK-DAG: [[DBG_LINE]] = !DILocation(line: 0, scope: ![[COPY_SP:[0-9]+]])
-// CHECK-DAG: [[COPY_LINE]] = !DILocation(line: 0, scope: ![[COPY_SP:[0-9]+]])
+// CHECK-DAG: [[COPY_LINE]] = !DILocation(line: 67, scope: ![[COPY_SP:[0-9]+]])
 // CHECK-DAG: [[COPY_SP]] = distinct !DISubprogram(name: "__copy_helper_block_"
-// CHECK-DAG: [[DESTROY_LINE]] = !DILocation(line: 0, scope: ![[DESTROY_SP:[0-9]+]])
+// CHECK-DAG: [[DESTROY_LINE]] = !DILocation(line: 67, scope: ![[DESTROY_SP:[0-9]+]])
 // CHECK-DAG: [[DESTROY_SP]] = distinct !DISubprogram(name: "__destroy_helper_block_"
+// CHECK-DAG: !DILocalVariable(arg: 1, scope: ![[COPY_SP]], {{.*}}, flags: DIFlagArtificial)
+// CHECK-DAG: !DILocalVariable(arg: 2, scope: ![[COPY_SP]], {{.*}}, flags: DIFlagArtificial)
+// CHECK-DAG: !DILocalVariable(arg: 1, scope: ![[DESTROY_SP]], {{.*}}, flags: DIFlagArtificial)
 typedef unsigned int NSUInteger;
 
 @protocol NSObject