1// RUN: %clang_cc1 -fblocks -triple x86_64-apple-darwin9 %s -emit-llvm -o - | FileCheck %s -check-prefix=X64
2// RUN: %clang_cc1 -fblocks -triple i686-apple-darwin9 %s -emit-llvm -o - | FileCheck %s -check-prefix=X32
3
4// X64: @.str = private unnamed_addr constant [6 x i8] c"v8@?0\00"
5// X64: @__block_literal_global = internal constant {{.*}} { i8** @_NSConcreteGlobalBlock, i32 1342177280,
6// X64: @.str1 = private unnamed_addr constant [12 x i8] c"i16@?0c8f12\00"
7// X64:   store i32 1073741824, i32*
8
9// X32: [[STR1:@.*]] = private unnamed_addr constant [6 x i8] c"v4@?0\00"
10// X32: @__block_descriptor_tmp = internal constant [[FULL_DESCRIPTOR_T:.*]] { i32 0, i32 20, i8* getelementptr inbounds ([6 x i8]* [[STR1]], i32 0, i32 0), i8* null }
11// X32: @__block_literal_global = internal constant [[GLOBAL_LITERAL_T:.*]] { i8** @_NSConcreteGlobalBlock, i32 1342177280, i32 0, i8* bitcast (void (i8*)* @__block_global_{{.*}} to i8*), [[DESCRIPTOR_T:%.*]]* bitcast ([[FULL_DESCRIPTOR_T]]* @__block_descriptor_tmp to {{%.*}}*) }
12// X32: [[STR2:@.*]] = private unnamed_addr constant [11 x i8] c"i12@?0c4f8\00"
13// X32: @__block_descriptor_tmp{{.*}} = internal constant [[FULL_DESCRIPTOR_T]] { i32 0, i32 24, i8* getelementptr inbounds ([11 x i8]* [[STR2]], i32 0, i32 0), i8* null }
14// X32:   store i32 1073741824, i32*
15
16// rdar://7635294
17
18
19int globalInt;
20void (^global)(void) = ^{ ++globalInt; };
21
22
23void foo(int param) {
24   extern int rand(void);
25   extern void rand_r(int (^b)(char x, float y));   // name a function present at runtime
26   while (param--)
27      rand_r(^(char x, float y){ return x + (int)y + param + rand(); });  // generate a local block binding param
28}
29
30#if 0
31#include <stdio.h>
32enum {
33    BLOCK_HAS_COPY_DISPOSE =  (1 << 25),
34    BLOCK_HAS_CXX_OBJ =       (1 << 26),
35    BLOCK_IS_GLOBAL =         (1 << 28),
36    BLOCK_HAS_DESCRIPTOR =    (1 << 29),
37    BLOCK_HAS_OBJC_TYPE  =    (1 << 30)
38};
39
40struct block_descriptor_big {
41    unsigned long int reserved;
42    unsigned long int size;
43    void (*copy)(void *dst, void *src); // conditional on BLOCK_HAS_COPY_DISPOSE
44    void (*dispose)(void *);            // conditional on BLOCK_HAS_COPY_DISPOSE
45    const char *signature;                  // conditional on BLOCK_HAS_OBJC
46    const char *layout;                 // conditional on BLOCK_HAS_OBJC
47};
48struct block_descriptor_small {
49    unsigned long int reserved;
50    unsigned long int size;
51    const char *signature;              // conditional on BLOCK_HAS_OBJC
52    const char *layout;                 // conditional on BLOCK_HAS_OBJC
53};
54
55struct block_layout_abi { // can't change
56  void *isa;
57  int flags;
58  int reserved;
59  void (*invoke)(void *, ...);
60  struct block_descriptor_big *descriptor;
61};
62
63const char *getBlockSignature(void *block) {
64   struct block_layout_abi *layout = (struct block_layout_abi *)block;
65   if ((layout->flags & BLOCK_HAS_OBJC_TYPE) != BLOCK_HAS_OBJC_TYPE) return NULL;
66   if (layout->flags & BLOCK_HAS_COPY_DISPOSE)
67      return layout->descriptor->signature;
68   else
69      return ((struct block_descriptor_small *)layout->descriptor)->signature;
70}
71
72
73
74int main(int argc, char *argv[]) {
75   printf("desired global flags: %d\n", BLOCK_IS_GLOBAL  | BLOCK_HAS_OBJC_TYPE);
76   printf("desired stack flags: %d\n",  BLOCK_HAS_OBJC_TYPE);
77
78   printf("types for global: %s\n", getBlockSignature(global));
79   printf("types for local: %s\n", getBlockSignature(^int(char x, float y) { return (int)(y + x); }));
80   return 0;
81}
82
83/*
84x86_64
85desired global flags: 1342177280
86desired stack flags: 1073741824
87types for global: v8@?0
88types for local: i16@?0c8f12
89
90i386
91desired global flags: 1342177280
92desired stack flags: 1073741824
93types for global: v4@?0
94types for local: i12@?0c4f8
95*/
96#endif
97