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https://github.com/Gericom/teak-llvm.git
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351762cda2
- BlockDeclRefExprs always store VarDecls
- BDREs no longer store copy expressions
- BlockDecls now store a list of captured variables, information about
how they're captured, and a copy expression if necessary
With that in hand, change IR generation to use the captures data in
blocks instead of walking the block independently.
Additionally, optimize block layout by emitting fields in descending
alignment order, with a heuristic for filling in words when alignment
of the end of the block header is insufficient for the most aligned
field.
llvm-svn: 125005
79 lines
1.5 KiB
C
79 lines
1.5 KiB
C
// RUN: %clang_cc1 %s -emit-llvm -o %t -fblocks
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// RUN: grep "_Block_object_dispose" %t | count 17
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// RUN: grep "__copy_helper_block_" %t | count 14
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// RUN: grep "__destroy_helper_block_" %t | count 14
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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 10
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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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