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], [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*)* @global_block_invoke{{.*}} 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], [11 x i8]* [[STR2]], i32 0, i32 0), i8* null }
14 // X32: store i32 1073741824, i32*
15
16 // rdar://7635294
17
18
19 int globalInt;
20 void (^global)(void) = ^{ ++globalInt; };
21
22
foo(int param)23 void 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>
32 enum {
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
40 struct 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 };
48 struct 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
55 struct 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
63 const 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
74 int 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 /*
84 x86_64
85 desired global flags: 1342177280
86 desired stack flags: 1073741824
87 types for global: v8@?0
88 types for local: i16@?0c8f12
89
90 i386
91 desired global flags: 1342177280
92 desired stack flags: 1073741824
93 types for global: v4@?0
94 types for local: i12@?0c4f8
95 */
96 #endif
97