1 ; Test that direct loads and stores of local variables are not checked. 2 ; Also test that redundant checks of the same variable are elided. 3 4 ; REQUIRES: allow_dump 5 6 ; RUN: %p2i -i %s --args -verbose=inst -threads=0 -fsanitize-address \ 7 ; RUN: | FileCheck --check-prefix=DUMP %s 8 9 define internal void @foo() { 10 %ptr8 = alloca i8, i32 1, align 4 11 %ptr16 = alloca i8, i32 2, align 4 12 %ptr32 = alloca i8, i32 4, align 4 13 %ptr64 = alloca i8, i32 8, align 4 14 %ptr128 = alloca i8, i32 16, align 4 15 16 %target8 = bitcast i8* %ptr8 to i8* 17 %target16 = bitcast i8* %ptr16 to i16* 18 %target32 = bitcast i8* %ptr32 to i32* 19 %target64 = bitcast i8* %ptr64 to i64* 20 %target128 = bitcast i8* %ptr128 to <4 x i32>* 21 22 ; unchecked loads 23 %loaded8 = load i8, i8* %target8, align 1 24 %loaded16 = load i16, i16* %target16, align 1 25 %loaded32 = load i32, i32* %target32, align 1 26 %loaded64 = load i64, i64* %target64, align 1 27 %loaded128 = load <4 x i32>, <4 x i32>* %target128, align 4 28 29 ; unchecked stores 30 store i8 %loaded8, i8* %target8, align 1 31 store i16 %loaded16, i16* %target16, align 1 32 store i32 %loaded32, i32* %target32, align 1 33 store i64 %loaded64, i64* %target64, align 1 34 store <4 x i32> %loaded128, <4 x i32>* %target128, align 4 35 36 %addr8 = ptrtoint i8* %ptr8 to i32 37 %addr16 = ptrtoint i8* %ptr16 to i32 38 %addr32 = ptrtoint i8* %ptr32 to i32 39 %addr64 = ptrtoint i8* %ptr64 to i32 40 %addr128 = ptrtoint i8* %ptr128 to i32 41 42 %off8 = add i32 %addr8, -1 43 %off16 = add i32 %addr16, -1 44 %off32 = add i32 %addr32, -1 45 %off64 = add i32 %addr64, -1 46 %off128 = add i32 %addr128, -1 47 48 %offtarget8 = inttoptr i32 %off8 to i8* 49 %offtarget16 = inttoptr i32 %off16 to i16* 50 %offtarget32 = inttoptr i32 %off32 to i32* 51 %offtarget64 = inttoptr i32 %off64 to i64* 52 %offtarget128 = inttoptr i32 %off128 to <4 x i32>* 53 54 ; checked stores 55 store i8 42, i8* %offtarget8, align 1 56 store i16 42, i16* %offtarget16, align 1 57 store i32 42, i32* %offtarget32, align 1 58 59 ; checked loads 60 %offloaded64 = load i64, i64* %offtarget64, align 1 61 %offloaded128 = load <4 x i32>, <4 x i32>* %offtarget128, align 4 62 63 ; loads and stores with elided redundant checks 64 %offloaded8 = load i8, i8* %offtarget8, align 1 65 %offloaded16 = load i16, i16* %offtarget16, align 1 66 %offloaded32 = load i32, i32* %offtarget32, align 1 67 store i64 %offloaded64, i64* %offtarget64, align 1 68 store <4 x i32> %offloaded128, <4 x i32>* %offtarget128, align 4 69 70 ret void 71 } 72 73 ; DUMP-LABEL: ================ Instrumented CFG ================ 74 ; DUMP-NEXT: define internal void @foo() { 75 76 ; Direct unchecked loads and stores 77 ; DUMP: %loaded8 = load i8, i8* %ptr8, align 1 78 ; DUMP-NEXT: %loaded16 = load i16, i16* %ptr16, align 1 79 ; DUMP-NEXT: %loaded32 = load i32, i32* %ptr32, align 1 80 ; DUMP-NEXT: %loaded64 = load i64, i64* %ptr64, align 1 81 ; DUMP-NEXT: %loaded128 = load <4 x i32>, <4 x i32>* %ptr128, align 4 82 ; DUMP-NEXT: store i8 %loaded8, i8* %ptr8, align 1 83 ; DUMP-NEXT: store i16 %loaded16, i16* %ptr16, align 1 84 ; DUMP-NEXT: store i32 %loaded32, i32* %ptr32, align 1 85 ; DUMP-NEXT: store i64 %loaded64, i64* %ptr64, align 1 86 ; DUMP-NEXT: store <4 x i32> %loaded128, <4 x i32>* %ptr128, align 4 87 88 ; Checked stores 89 ; DUMP: call void @__asan_check_store(i32 %off8, i32 1) 90 ; DUMP-NEXT: store i8 42, i8* %off8, align 1 91 ; DUMP-NEXT: call void @__asan_check_store(i32 %off16, i32 2) 92 ; DUMP-NEXT: store i16 42, i16* %off16, align 1 93 ; DUMP-NEXT: call void @__asan_check_store(i32 %off32, i32 4) 94 ; DUMP-NEXT: store i32 42, i32* %off32, align 1 95 96 ; Checked loads 97 ; DUMP-NEXT: call void @__asan_check_load(i32 %off64, i32 8) 98 ; DUMP-NEXT: %offloaded64 = load i64, i64* %off64, align 1 99 ; DUMP-NEXT: call void @__asan_check_load(i32 %off128, i32 16) 100 ; DUMP-NEXT: %offloaded128 = load <4 x i32>, <4 x i32>* %off128, align 4 101 102 ; Loads and stores with elided redundant checks 103 ; DUMP-NEXT: %offloaded8 = load i8, i8* %off8, align 1 104 ; DUMP-NEXT: %offloaded16 = load i16, i16* %off16, align 1 105 ; DUMP-NEXT: %offloaded32 = load i32, i32* %off32, align 1 106 ; DUMP-NEXT: store i64 %offloaded64, i64* %off64, align 1, beacon %offloaded64 107 ; DUMP-NEXT: store <4 x i32> %offloaded128, <4 x i32>* %off128, align 4, beacon %offloaded128 108
