96 lines
3.7 KiB
C
96 lines
3.7 KiB
C
// RUN: %clang_cc1 -fblocks -triple x86_64-apple-darwin9 %s -emit-llvm -o - | FileCheck %s -check-prefix=X64
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// RUN: %clang_cc1 -fblocks -triple i686-apple-darwin9 %s -emit-llvm -o - | FileCheck %s -check-prefix=X32
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// X64: @.str = private unnamed_addr constant [6 x i8] c"v8@?0\00"
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// X64: @__block_literal_global = internal constant {{.*}} { i8** @_NSConcreteGlobalBlock, i32 1342177280,
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// X64: @.str1 = private unnamed_addr constant [12 x i8] c"i16@?0c8f12\00"
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// X64: store i32 1073741824, i32*
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// X32: [[STR1:@.*]] = private unnamed_addr constant [6 x i8] c"v4@?0\00"
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// 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 }
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// 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 {{%.*}}*) }
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// X32: [[STR2:@.*]] = private unnamed_addr constant [11 x i8] c"i12@?0c4f8\00"
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// 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 }
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// X32: store i32 1073741824, i32*
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// rdar://7635294
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int globalInt;
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void (^global)(void) = ^{ ++globalInt; };
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void foo(int param) {
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extern int rand(void);
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extern void rand_r(int (^b)(char x, float y)); // name a function present at runtime
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while (param--)
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rand_r(^(char x, float y){ return x + (int)y + param + rand(); }); // generate a local block binding param
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}
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#if 0
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#include <stdio.h>
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enum {
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BLOCK_HAS_COPY_DISPOSE = (1 << 25),
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BLOCK_HAS_CXX_OBJ = (1 << 26),
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BLOCK_IS_GLOBAL = (1 << 28),
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BLOCK_HAS_DESCRIPTOR = (1 << 29),
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BLOCK_HAS_OBJC_TYPE = (1 << 30)
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};
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struct block_descriptor_big {
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unsigned long int reserved;
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unsigned long int size;
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void (*copy)(void *dst, void *src); // conditional on BLOCK_HAS_COPY_DISPOSE
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void (*dispose)(void *); // conditional on BLOCK_HAS_COPY_DISPOSE
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const char *signature; // conditional on BLOCK_HAS_OBJC
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const char *layout; // conditional on BLOCK_HAS_OBJC
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};
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struct block_descriptor_small {
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unsigned long int reserved;
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unsigned long int size;
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const char *signature; // conditional on BLOCK_HAS_OBJC
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const char *layout; // conditional on BLOCK_HAS_OBJC
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};
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struct block_layout_abi { // can't change
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void *isa;
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int flags;
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int reserved;
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void (*invoke)(void *, ...);
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struct block_descriptor_big *descriptor;
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};
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const char *getBlockSignature(void *block) {
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struct block_layout_abi *layout = (struct block_layout_abi *)block;
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if ((layout->flags & BLOCK_HAS_OBJC_TYPE) != BLOCK_HAS_OBJC_TYPE) return NULL;
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if (layout->flags & BLOCK_HAS_COPY_DISPOSE)
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return layout->descriptor->signature;
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else
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return ((struct block_descriptor_small *)layout->descriptor)->signature;
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}
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int main(int argc, char *argv[]) {
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printf("desired global flags: %d\n", BLOCK_IS_GLOBAL | BLOCK_HAS_OBJC_TYPE);
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printf("desired stack flags: %d\n", BLOCK_HAS_OBJC_TYPE);
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printf("types for global: %s\n", getBlockSignature(global));
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printf("types for local: %s\n", getBlockSignature(^int(char x, float y) { return (int)(y + x); }));
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return 0;
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}
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/*
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x86_64
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desired global flags: 1342177280
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desired stack flags: 1073741824
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types for global: v8@?0
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types for local: i16@?0c8f12
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i386
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desired global flags: 1342177280
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desired stack flags: 1073741824
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types for global: v4@?0
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types for local: i12@?0c4f8
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*/
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#endif
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