Change the objc ARC optimizer to use the new objc.* intrinsics

We're moving ARC optimisation and ARC emission in clang away from runtime methods
and towards intrinsics.  This is the part which actually uses the intrinsics in the ARC
optimizer when both analyzing the existing calls and emitting new ones.

Differential Revision: https://reviews.llvm.org/D55348

Reviewers: ahatanak
llvm-svn: 349534
diff --git a/llvm/test/Transforms/ObjCARC/post-inlining.ll b/llvm/test/Transforms/ObjCARC/post-inlining.ll
index b2d6112..0304d59 100644
--- a/llvm/test/Transforms/ObjCARC/post-inlining.ll
+++ b/llvm/test/Transforms/ObjCARC/post-inlining.ll
@@ -2,9 +2,9 @@
 
 declare void @use_pointer(i8*)
 declare i8* @returner()
-declare i8* @objc_retain(i8*)
-declare i8* @objc_autoreleaseReturnValue(i8*)
-declare i8* @objc_retainAutoreleasedReturnValue(i8*)
+declare i8* @llvm.objc.retain(i8*)
+declare i8* @llvm.objc.autoreleaseReturnValue(i8*)
+declare i8* @llvm.objc.retainAutoreleasedReturnValue(i8*)
 
 ; Clean up residue left behind after inlining.
 
@@ -14,8 +14,8 @@
 ; CHECK-NEXT: }
 define void @test0(i8* %call.i) {
 entry:
-  %0 = tail call i8* @objc_retain(i8* %call.i) nounwind
-  %1 = tail call i8* @objc_autoreleaseReturnValue(i8* %0) nounwind
+  %0 = tail call i8* @llvm.objc.retain(i8* %call.i) nounwind
+  %1 = tail call i8* @llvm.objc.autoreleaseReturnValue(i8* %0) nounwind
   ret void
 }
 
@@ -27,8 +27,8 @@
 ; CHECK-NEXT: }
 define void @test1(i8* %call.i) {
 entry:
-  %0 = tail call i8* @objc_retain(i8* %call.i) nounwind
-  %1 = tail call i8* @objc_autoreleaseReturnValue(i8* %call.i) nounwind
+  %0 = tail call i8* @llvm.objc.retain(i8* %call.i) nounwind
+  %1 = tail call i8* @llvm.objc.autoreleaseReturnValue(i8* %call.i) nounwind
   ret void
 }
 
@@ -41,8 +41,8 @@
 ; CHECK-NEXT: }
 define void @test24(i8* %p) {
 entry:
-  call i8* @objc_autoreleaseReturnValue(i8* %p) nounwind
-  call i8* @objc_retainAutoreleasedReturnValue(i8* %p) nounwind
+  call i8* @llvm.objc.autoreleaseReturnValue(i8* %p) nounwind
+  call i8* @llvm.objc.retainAutoreleasedReturnValue(i8* %p) nounwind
   call void @use_pointer(i8* %p)
   ret void
 }