| 1 | // RUN: %clang_cc1 %s -emit-llvm -o - -triple x86_64-darwin-apple -fobjc-arc -O2 | FileCheck %s |
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| 2 | // RUN: %clang_cc1 %s -emit-llvm -o - -triple x86_64-darwin-apple -fobjc-arc -O0 | FileCheck %s -check-prefix=CHECK-O0 |
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| 3 | |
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| 4 | // Make sure we emit clang.arc.use before calling objc_release as part of the |
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| 5 | // cleanup. This way we make sure the object will not be released until the |
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| 6 | // end of the full expression. |
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| 7 | |
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| 8 | // rdar://problem/24528966 |
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| 9 | |
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| 10 | @class NSString; |
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| 11 | extern __attribute__((visibility("default"))) NSString *GenString(); |
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| 12 | |
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| 13 | // Behavior of __builtin_os_log differs between platforms, so only test on X86 |
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| 14 | #ifdef __x86_64__ |
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| 15 | // CHECK-LABEL: define i8* @test_builtin_os_log |
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| 16 | // CHECK-O0-LABEL: define i8* @test_builtin_os_log |
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| 17 | // CHECK: (i8* returned %[[BUF:.*]]) |
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| 18 | // CHECK-O0: (i8* %[[BUF:.*]]) |
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| 19 | void *test_builtin_os_log(void *buf) { |
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| 20 | return __builtin_os_log_format(buf, "capabilities: %@", GenString()); |
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| 21 | |
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| 22 | // CHECK: %[[CALL:.*]] = tail call %[[TY0:.*]]* (...) @GenString() |
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| 23 | // CHECK: %[[V0:.*]] = bitcast %[[TY0]]* %[[CALL]] to i8* |
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| 24 | // CHECK: %[[V1:.*]] = notail call i8* @llvm.objc.retainAutoreleasedReturnValue(i8* %[[V0]]) |
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| 25 | // CHECK: %[[V2:.*]] = ptrtoint %[[TY0]]* %[[CALL]] to i64 |
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| 26 | // CHECK: store i8 2, i8* %[[BUF]], align 1 |
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| 27 | // CHECK: %[[NUMARGS_I:.*]] = getelementptr i8, i8* %[[BUF]], i64 1 |
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| 28 | // CHECK: store i8 1, i8* %[[NUMARGS_I]], align 1 |
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| 29 | // CHECK: %[[ARGDESCRIPTOR_I:.*]] = getelementptr i8, i8* %[[BUF]], i64 2 |
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| 30 | // CHECK: store i8 64, i8* %[[ARGDESCRIPTOR_I]], align 1 |
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| 31 | // CHECK: %[[ARGSIZE_I:.*]] = getelementptr i8, i8* %[[BUF]], i64 3 |
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| 32 | // CHECK: store i8 8, i8* %[[ARGSIZE_I]], align 1 |
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| 33 | // CHECK: %[[ARGDATA_I:.*]] = getelementptr i8, i8* %[[BUF]], i64 4 |
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| 34 | // CHECK: %[[ARGDATACAST_I:.*]] = bitcast i8* %[[ARGDATA_I]] to i64* |
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| 35 | // CHECK: store i64 %[[V2]], i64* %[[ARGDATACAST_I]], align 1 |
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| 36 | // CHECK: tail call void (...) @llvm.objc.clang.arc.use(%[[TY0]]* %[[CALL]]) |
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| 37 | // CHECK: tail call void @llvm.objc.release(i8* %[[V0]]) |
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| 38 | // CHECK: ret i8* %[[BUF]] |
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| 39 | |
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| 40 | // clang.arc.use is used and removed in IR optimizations. At O0, we should not |
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| 41 | // emit clang.arc.use, since it will not be removed and we will have a link |
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| 42 | // error. |
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| 43 | // CHECK-O0: %[[BUF_ADDR:.*]] = alloca i8*, align 8 |
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| 44 | // CHECK-O0: store i8* %[[BUF]], i8** %[[BUF_ADDR]], align 8 |
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| 45 | // CHECK-O0: %[[V0:.*]] = load i8*, i8** %[[BUF_ADDR]], align 8 |
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| 46 | // CHECK-O0: %[[CALL:.*]] = call %[[TY0:.*]]* (...) @GenString() |
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| 47 | // CHECK-O0: %[[V1:.*]] = bitcast %[[TY0]]* %[[CALL]] to i8* |
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| 48 | // CHECK-O0: %[[V2:.*]] = notail call i8* @llvm.objc.retainAutoreleasedReturnValue(i8* %[[V1]]) |
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| 49 | // CHECK-O0: %[[V3:.*]] = bitcast i8* %[[V2]] to %[[TY0]]* |
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| 50 | // CHECK-O0: %[[V4:.*]] = ptrtoint %[[TY0]]* %[[V3]] to i64 |
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| 51 | // CHECK-O0: call void @__os_log_helper_1_2_1_8_64(i8* %[[V0]], i64 %[[V4]]) |
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| 52 | // CHECK-O0: %[[V5:.*]] = bitcast %[[TY0]]* %[[V3]] to i8* |
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| 53 | // CHECK-O0-NOT: call void (...) @llvm.objc.clang.arc.use({{.*}} |
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| 54 | // CHECK-O0: call void @llvm.objc.release(i8* %[[V5]]) |
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| 55 | // CHECK-O0: ret i8* %[[V0]] |
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| 56 | } |
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| 57 | |
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| 58 | // CHECK-O0-LABEL: define linkonce_odr hidden void @__os_log_helper_1_2_1_8_64 |
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| 59 | // CHECK-O0: (i8* %[[BUFFER:.*]], i64 %[[ARG0:.*]]) |
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| 60 | |
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| 61 | // CHECK-O0: %[[BUFFER_ADDR:.*]] = alloca i8*, align 8 |
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| 62 | // CHECK-O0: %[[ARG0_ADDR:.*]] = alloca i64, align 8 |
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| 63 | // CHECK-O0: store i8* %[[BUFFER]], i8** %[[BUFFER_ADDR]], align 8 |
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| 64 | // CHECK-O0: store i64 %[[ARG0]], i64* %[[ARG0_ADDR]], align 8 |
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| 65 | // CHECK-O0: %[[BUF:.*]] = load i8*, i8** %[[BUFFER_ADDR]], align 8 |
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| 66 | // CHECK-O0: %[[SUMMARY:.*]] = getelementptr i8, i8* %[[BUF]], i64 0 |
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| 67 | // CHECK-O0: store i8 2, i8* %[[SUMMARY]], align 1 |
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| 68 | // CHECK-O0: %[[NUMARGS:.*]] = getelementptr i8, i8* %[[BUF]], i64 1 |
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| 69 | // CHECK-O0: store i8 1, i8* %[[NUMARGS]], align 1 |
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| 70 | // CHECK-O0: %[[ARGDESCRIPTOR:.*]] = getelementptr i8, i8* %[[BUF]], i64 2 |
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| 71 | // CHECK-O0: store i8 64, i8* %[[ARGDESCRIPTOR]], align 1 |
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| 72 | // CHECK-O0: %[[ARGSIZE:.*]] = getelementptr i8, i8* %[[BUF]], i64 3 |
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| 73 | // CHECK-O0: store i8 8, i8* %[[ARGSIZE]], align 1 |
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| 74 | // CHECK-O0: %[[ARGDATA:.*]] = getelementptr i8, i8* %[[BUF]], i64 4 |
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| 75 | // CHECK-O0: %[[ARGDATACAST:.*]] = bitcast i8* %[[ARGDATA]] to i64* |
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| 76 | // CHECK-O0: %[[V0:.*]] = load i64, i64* %[[ARG0_ADDR]], align 8 |
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| 77 | // CHECK-O0: store i64 %[[V0]], i64* %[[ARGDATACAST]], align 1 |
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| 78 | |
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| 79 | #endif |
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| 80 | |
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