896289277d
SVN r339438 added support to deduplicate the helpers by using a consistent naming scheme and using LinkOnceODR semantics. This works on ELF by means of weak linking semantics, and entirely does not work on PE/COFF where you end up with multiply defined strong symbols, which is a strong error on PE/COFF. Assign the functions a COMDAT group so that they can be uniqued by the linker. This fixes the use of blocks in CoreFoundation on Windows. llvm-svn: 354678
88 lines
2.0 KiB
C
88 lines
2.0 KiB
C
// RUN: %clang_cc1 -triple thumbv7-apple-ios %s -emit-llvm -o %t -fblocks
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// RUN: grep "_Block_object_dispose" %t | count 12
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// RUN: grep "__copy_helper_block_" %t | count 9
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// RUN: grep "__destroy_helper_block_" %t | count 9
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// RUN: grep "__Block_byref_object_copy_" %t | count 2
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// RUN: grep "__Block_byref_object_dispose_" %t | count 2
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// RUN: grep "i32 135)" %t | count 2
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// RUN: grep "_Block_object_assign" %t | count 5
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// RUN: %clang_cc1 -triple thumbv7-unknown-windows %s -emit-llvm -o %t -fblocks
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// RUN: grep "_Block_object_dispose" %t | count 12
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// RUN: grep "__copy_helper_block_" %t | count 11
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// RUN: grep "__destroy_helper_block_" %t | count 11
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// RUN: grep "__Block_byref_object_copy_" %t | count 2
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// RUN: grep "__Block_byref_object_dispose_" %t | count 2
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// RUN: grep "i32 135)" %t | count 2
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// RUN: grep "_Block_object_assign" %t | count 5
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int printf(const char *, ...);
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void test1() {
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__block int a;
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int b=2;
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a=1;
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printf("a is %d, b is %d\n", a, b);
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^{ a = 10; printf("a is %d, b is %d\n", a, b); }(); // needs copy/dispose
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printf("a is %d, b is %d\n", a, b);
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a = 1;
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printf("a is %d, b is %d\n", a, b);
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}
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void test2() {
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__block int a;
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a=1;
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printf("a is %d\n", a);
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^{ // needs copy/dispose
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^{ // needs copy/dispose
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a = 10;
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}();
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}();
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printf("a is %d\n", a);
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a = 1;
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printf("a is %d\n", a);
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}
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void test3() {
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__block int k;
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__block int (^j)(int);
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^{j=0; k=0;}(); // needs copy/dispose
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}
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int test4() {
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extern int g;
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static int i = 1;
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^(int j){ i = j; g = 0; }(0); // does not need copy/dispose
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return i + g;
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}
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int g;
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void test5() {
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__block struct { int i; } i;
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^{ (void)i; }(); // needs copy/dispose
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}
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void test6() {
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__block int i;
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^{ i=1; }(); // needs copy/dispose
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^{}(); // does not need copy/dispose
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}
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void test7() {
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^{ // does not need copy/dispose
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__block int i;
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^{ i = 1; }(); // needs copy/dispose
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}();
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}
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int main() {
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int rv = 0;
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test1();
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test2();
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test3();
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rv += test4();
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test5();
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return rv;
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}
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