From 222e2a7620e6520ffaf4fc4e69d79c18da31542e Mon Sep 17 00:00:00 2001 From: "Zancanaro; Carlo" Date: Mon, 24 Sep 2012 09:58:17 +1000 Subject: Add the clang library to the repo (with some of my changes, too). --- clang/test/CodeGen/blocksignature.c | 96 +++++++++++++++++++++++++++++++++++++ 1 file changed, 96 insertions(+) create mode 100644 clang/test/CodeGen/blocksignature.c (limited to 'clang/test/CodeGen/blocksignature.c') diff --git a/clang/test/CodeGen/blocksignature.c b/clang/test/CodeGen/blocksignature.c new file mode 100644 index 0000000..63fe124 --- /dev/null +++ b/clang/test/CodeGen/blocksignature.c @@ -0,0 +1,96 @@ +// RUN: %clang_cc1 -fblocks -triple x86_64-apple-darwin9 %s -emit-llvm -o - | FileCheck %s -check-prefix=X64 +// RUN: %clang_cc1 -fblocks -triple i686-apple-darwin9 %s -emit-llvm -o - | FileCheck %s -check-prefix=X32 + +// X64: @.str = private unnamed_addr constant [6 x i8] c"v8@?0\00" +// X64: @__block_literal_global = internal constant {{.*}} { i8** @_NSConcreteGlobalBlock, i32 1342177280, +// X64: @.str1 = private unnamed_addr constant [12 x i8] c"i16@?0c8f12\00" +// X64: store i32 1073741824, i32* + +// X32: [[STR1:@.*]] = private unnamed_addr constant [6 x i8] c"v4@?0\00" +// 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 } +// 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 {{%.*}}*) } +// X32: [[STR2:@.*]] = private unnamed_addr constant [11 x i8] c"i12@?0c4f8\00" +// 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 } +// X32: store i32 1073741824, i32* + +// rdar://7635294 + + +int globalInt; +void (^global)(void) = ^{ ++globalInt; }; + + +void foo(int param) { + extern int rand(void); + extern void rand_r(int (^b)(char x, float y)); // name a function present at runtime + while (param--) + rand_r(^(char x, float y){ return x + (int)y + param + rand(); }); // generate a local block binding param +} + +#if 0 +#include +enum { + BLOCK_HAS_COPY_DISPOSE = (1 << 25), + BLOCK_HAS_CXX_OBJ = (1 << 26), + BLOCK_IS_GLOBAL = (1 << 28), + BLOCK_HAS_DESCRIPTOR = (1 << 29), + BLOCK_HAS_OBJC_TYPE = (1 << 30) +}; + +struct block_descriptor_big { + unsigned long int reserved; + unsigned long int size; + void (*copy)(void *dst, void *src); // conditional on BLOCK_HAS_COPY_DISPOSE + void (*dispose)(void *); // conditional on BLOCK_HAS_COPY_DISPOSE + const char *signature; // conditional on BLOCK_HAS_OBJC + const char *layout; // conditional on BLOCK_HAS_OBJC +}; +struct block_descriptor_small { + unsigned long int reserved; + unsigned long int size; + const char *signature; // conditional on BLOCK_HAS_OBJC + const char *layout; // conditional on BLOCK_HAS_OBJC +}; + +struct block_layout_abi { // can't change + void *isa; + int flags; + int reserved; + void (*invoke)(void *, ...); + struct block_descriptor_big *descriptor; +}; + +const char *getBlockSignature(void *block) { + struct block_layout_abi *layout = (struct block_layout_abi *)block; + if ((layout->flags & BLOCK_HAS_OBJC_TYPE) != BLOCK_HAS_OBJC_TYPE) return NULL; + if (layout->flags & BLOCK_HAS_COPY_DISPOSE) + return layout->descriptor->signature; + else + return ((struct block_descriptor_small *)layout->descriptor)->signature; +} + + + +int main(int argc, char *argv[]) { + printf("desired global flags: %d\n", BLOCK_IS_GLOBAL | BLOCK_HAS_OBJC_TYPE); + printf("desired stack flags: %d\n", BLOCK_HAS_OBJC_TYPE); + + printf("types for global: %s\n", getBlockSignature(global)); + printf("types for local: %s\n", getBlockSignature(^int(char x, float y) { return (int)(y + x); })); + return 0; +} + +/* +x86_64 +desired global flags: 1342177280 +desired stack flags: 1073741824 +types for global: v8@?0 +types for local: i16@?0c8f12 + +i386 +desired global flags: 1342177280 +desired stack flags: 1073741824 +types for global: v4@?0 +types for local: i12@?0c4f8 +*/ +#endif -- cgit v1.2.3