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