derek.holloway
7502bf64a4
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56 lines
2.2 KiB
C
56 lines
2.2 KiB
C
// RUN: %clang_cc1 -fblocks -debug-info-kind=limited -emit-llvm -o - %s | FileCheck %s
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// RUN: %clang_cc1 -DDEAD_CODE -fblocks -debug-info-kind=limited -emit-llvm -o - %s | FileCheck %s
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typedef void (^BlockTy)(void);
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void escapeFunc(BlockTy);
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typedef void (^BlockTy)(void);
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void noEscapeFunc(__attribute__((noescape)) BlockTy);
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// Verify that the desired DIExpression are generated for escaping (i.e, not
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// 'noescape') blocks.
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void test_escape_func(void) {
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// CHECK-LABEL: void @test_escape_func
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// CHECK: #dbg_declare({{.*}}![[ESCAPE_VAR:[0-9]+]], !DIExpression(DW_OP_plus_uconst, {{[0-9]+}}, DW_OP_deref, DW_OP_plus_uconst, {{[0-9]+}}){{.*}})
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__block int escape_var;
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// Blocks in dead code branches still capture __block variables.
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#ifdef DEAD_CODE
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if (0)
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#endif
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escapeFunc(^{ (void)escape_var; });
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}
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// Verify that the desired DIExpression are generated for noescape blocks.
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void test_noescape_func(void) {
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// CHECK-LABEL: void @test_noescape_func
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// CHECK: #dbg_declare({{.*}}![[NOESCAPE_VAR:[0-9]+]], !DIExpression(),
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__block int noescape_var;
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noEscapeFunc(^{ (void)noescape_var; });
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}
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// Verify that the desired DIExpression are generated for blocks.
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void test_local_block(void) {
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// CHECK-LABEL: void @test_local_block
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// CHECK: #dbg_declare({{.*}}![[BLOCK_VAR:[0-9]+]], !DIExpression(DW_OP_plus_uconst, {{[0-9]+}}, DW_OP_deref, DW_OP_plus_uconst, {{[0-9]+}}){{.*}})
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__block int block_var;
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// CHECK-LABEL: @__test_local_block_block_invoke
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// CHECK: #dbg_declare({{.*}}!DIExpression(DW_OP_deref, DW_OP_plus_uconst, {{[0-9]+}}, DW_OP_deref, DW_OP_plus_uconst, {{[0-9]+}}, DW_OP_deref, DW_OP_plus_uconst, {{[0-9]+}}){{.*}})
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^ { block_var = 1; }();
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}
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// Verify that the desired DIExpression are generated for __block vars not used
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// in any block.
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void test_unused(void) {
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// CHECK-LABEL: void @test_unused
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// CHECK: #dbg_declare({{.*}}![[UNUSED_VAR:[0-9]+]], !DIExpression(),
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__block int unused_var;
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// Use i (not inside a block).
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++unused_var;
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}
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// CHECK: ![[ESCAPE_VAR]] = !DILocalVariable(name: "escape_var"
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// CHECK: ![[NOESCAPE_VAR]] = !DILocalVariable(name: "noescape_var"
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// CHECK: ![[BLOCK_VAR]] = !DILocalVariable(name: "block_var"
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// CHECK: ![[UNUSED_VAR]] = !DILocalVariable(name: "unused_var"
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