Automatic Reference Counting.
Language-design credit goes to a lot of people, but I particularly want
to single out Blaine Garst and Patrick Beard for their contributions.
Compiler implementation credit goes to Argyrios, Doug, Fariborz, and myself,
in no particular order.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133103 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGenObjC/arc-block-ivar-layout.m b/test/CodeGenObjC/arc-block-ivar-layout.m
new file mode 100644
index 0000000..b6a0427
--- /dev/null
+++ b/test/CodeGenObjC/arc-block-ivar-layout.m
@@ -0,0 +1,60 @@
+// RUN: %clang_cc1 -fblocks -fobjc-arc -fobjc-nonfragile-abi -triple x86_64-apple-darwin -O0 -emit-llvm %s -o %t-64.s
+// RUN: FileCheck -check-prefix LP64 --input-file=%t-64.s %s
+// rdar://8991729
+
+__weak id wid;
+void x(id y) {}
+void y(int a) {}
+
+extern id opaque_id();
+
+void f() {
+ __block int byref_int = 0;
+ char ch = 'a';
+ char ch1 = 'b';
+ char ch2 = 'c';
+ short sh = 2;
+ const id bar = (id) opaque_id();
+ id baz = 0;
+ __strong id strong_void_sta;
+ __block id byref_bab = (id)0;
+ __block id bl_var1;
+ int i; double dob;
+
+// The patterns here are a sequence of bytes, each saying first how
+// many sizeof(void*) chunks to skip (high nibble) and then how many
+// to scan (low nibble). A zero byte says that we've reached the end
+// of the pattern.
+//
+// All of these patterns start with 01 3x because the block header on
+// LP64 consists of an isa pointer (which we're supposed to scan for
+// some reason) followed by three words (2 ints, a function pointer,
+// and a descriptor pointer).
+
+// Test 1
+// byref int, short, char, char, char, id, id, strong id, byref id
+// 01 35 10 00
+// CHECK-LP64: @"\01L_OBJC_CLASS_NAME_{{.*}}" = internal global [4 x i8] c"\015\10\00"
+ void (^b)() = ^{
+ byref_int = sh + ch+ch1+ch2 ;
+ x(bar);
+ x(baz);
+ x((id)strong_void_sta);
+ x(byref_bab);
+ };
+ b();
+
+// Test 2
+// byref int, short, char, char, char, id, id, strong id, byref void*, byref id
+// 01 36 10 00
+// CHECK-LP64: @"\01L_OBJC_CLASS_NAME_{{.*}}" = internal global [4 x i8] c"\016\10\00"
+ void (^c)() = ^{
+ byref_int = sh + ch+ch1+ch2 ;
+ x(bar);
+ x(baz);
+ x((id)strong_void_sta);
+ x(wid);
+ bl_var1 = 0;
+ x(byref_bab);
+ };
+}