Merge branch 'master' of ssh://bitbucket.org/czan/honours

1 files changed, 60 insertions, 0 deletions

diff --git a/clang/test/CodeGenObjC/arc-block-ivar-layout.m b/clang/test/CodeGenObjC/arc-block-ivar-layout.m
new file mode 100644
index 0000000..6c82f29
--- /dev/null
+++ b/clang/test/CodeGenObjC/arc-block-ivar-layout.m
@@ -0,0 +1,60 @@
+// RUN: %clang_cc1 -fblocks -fobjc-arc -fobjc-runtime-has-weak -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);
+    };    
+}