1; Test the ASan's stack layout. 2; More tests in tests/Transforms/Utils/ASanStackFrameLayoutTest.cpp 3; RUN: opt < %s -asan -asan-module -asan-stack-dynamic-alloca=0 -asan-use-after-scope -S -enable-new-pm=0 \ 4; RUN: | FileCheck %s --check-prefixes=CHECK,CHECK-STATIC 5; RUN: opt < %s -passes='asan-pipeline' -asan-stack-dynamic-alloca=0 -asan-use-after-scope -S \ 6; RUN: | FileCheck %s --check-prefixes=CHECK,CHECK-STATIC 7; RUN: opt < %s -asan -asan-module -asan-stack-dynamic-alloca=1 -asan-use-after-scope -S -enable-new-pm=0 \ 8; RUN: | FileCheck %s --check-prefixes=CHECK,CHECK-DYNAMIC 9; RUN: opt < %s -passes='asan-pipeline' -asan-stack-dynamic-alloca=1 -asan-use-after-scope -S \ 10; RUN: | FileCheck %s --check-prefixes=CHECK,CHECK-DYNAMIC 11 12target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128" 13target triple = "x86_64-unknown-linux-gnu" 14 15declare void @Use(i8*) 16declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) nounwind 17declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) nounwind 18 19; CHECK: private unnamed_addr constant{{.*}}3 32 10 3 XXX 64 20 3 YYY 128 30 3 ZZZ\0 20; CHECK: private unnamed_addr constant{{.*}}3 32 5 3 AAA 64 55 3 BBB 160 555 3 CCC\0 21; CHECK: private unnamed_addr constant{{.*}}3 256 128 3 CCC 448 128 3 BBB 608 128 3 AAA\0 22; CHECK: private unnamed_addr constant{{.*}}2 32 4 3 AAA 48 4 5 BBB:7\0 23 24define void @Func1() sanitize_address { 25entry: 26; CHECK-LABEL: Func1 27 28; CHECK-STATIC: alloca [192 x i8] 29; CHECK-STATIC: %asan_local_stack_base = alloca i64 30; CHECK-DYNAMIC: alloca i8, i64 192 31 32; CHECK-NOT: alloca 33; CHECK: ret void 34 %XXX = alloca [10 x i8], align 1 35 %YYY = alloca [20 x i8], align 1 36 %ZZZ = alloca [30 x i8], align 1 37 %arr1.ptr = bitcast [10 x i8]* %XXX to i8* 38 store volatile i8 0, i8* %arr1.ptr 39 %arr2.ptr = bitcast [20 x i8]* %YYY to i8* 40 store volatile i8 0, i8* %arr2.ptr 41 %arr3.ptr = bitcast [30 x i8]* %ZZZ to i8* 42 store volatile i8 0, i8* %arr3.ptr 43 ret void 44} 45 46define void @Func2() sanitize_address { 47entry: 48; CHECK-LABEL: Func2 49 50; CHECK-STATIC: alloca [864 x i8] 51; CHECK-STATIC: %asan_local_stack_base = alloca i64 52; CHECK-DYNAMIC: alloca i8, i64 864 53 54; CHECK-NOT: alloca 55; CHECK: ret void 56 %AAA = alloca [5 x i8], align 1 57 %BBB = alloca [55 x i8], align 1 58 %CCC = alloca [555 x i8], align 1 59 %arr1.ptr = bitcast [5 x i8]* %AAA to i8* 60 store volatile i8 0, i8* %arr1.ptr 61 %arr2.ptr = bitcast [55 x i8]* %BBB to i8* 62 store volatile i8 0, i8* %arr2.ptr 63 %arr3.ptr = bitcast [555 x i8]* %CCC to i8* 64 store volatile i8 0, i8* %arr3.ptr 65 ret void 66} 67 68; Check that we reorder vars according to alignment and handle large alignments. 69define void @Func3() sanitize_address { 70entry: 71; CHECK-LABEL: Func3 72 73; CHECK-STATIC: alloca [768 x i8] 74; CHECK-STATIC: %asan_local_stack_base = alloca i64 75; CHECK-DYNAMIC: alloca i8, i64 768 76 77; CHECK-NOT: alloca 78; CHECK: ret void 79 %AAA = alloca [128 x i8], align 16 80 %BBB = alloca [128 x i8], align 64 81 %CCC = alloca [128 x i8], align 256 82 %arr1.ptr = bitcast [128 x i8]* %AAA to i8* 83 store volatile i8 0, i8* %arr1.ptr 84 %arr2.ptr = bitcast [128 x i8]* %BBB to i8* 85 store volatile i8 0, i8* %arr2.ptr 86 %arr3.ptr = bitcast [128 x i8]* %CCC to i8* 87 store volatile i8 0, i8* %arr3.ptr 88 ret void 89} 90 91; Check that line numbers are attached to variable names if variable 92; in the same file as a function. 93define void @Func5() sanitize_address #0 !dbg !11 { 94 %AAA = alloca i32, align 4 ; File is not the same as !11 95 %BBB = alloca i32, align 4 ; File is the same as !11 96 %BBB.ptr = bitcast i32* %BBB to i8* 97 call void @llvm.lifetime.start.p0i8(i64 4, i8* nonnull %BBB.ptr), !dbg !12 98 store volatile i32 5, i32* %BBB, align 4 99 %AAA.ptr = bitcast i32* %AAA to i8* 100 call void @llvm.lifetime.start.p0i8(i64 4, i8* nonnull %AAA.ptr), !dbg !14 101 store volatile i32 3, i32* %AAA, align 4 102 call void @llvm.lifetime.end.p0i8(i64 4, i8* nonnull %AAA.ptr), !dbg !17 103 call void @llvm.lifetime.end.p0i8(i64 4, i8* nonnull %BBB.ptr), !dbg !18 104 ret void 105} 106 107!llvm.dbg.cu = !{!0} 108!llvm.module.flags = !{!3, !4} 109!3 = !{i32 2, !"Dwarf Version", i32 4} 110!4 = !{i32 2, !"Debug Info Version", i32 3} 111 112!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1) 113!1 = !DIFile(filename: "../file1.c", directory: "/") 114!11 = distinct !DISubprogram(name: "Func5", scope: !1, file: !1, line: 6, unit: !0) 115!12 = !DILocation(line: 7, column: 3, scope: !11) 116!18 = !DILocation(line: 10, column: 1, scope: !11) 117 118!21 = !DIFile(filename: "../file2.c", directory: "/") 119!6 = distinct !DISubprogram(name: "Func4", scope: !1, file: !21, line: 2, unit: !0) 120!15 = distinct !DILocation(line: 8, column: 3, scope: !11) 121!14 = !DILocation(line: 3, column: 3, scope: !6, inlinedAt: !15) 122!17 = !DILocation(line: 4, column: 1, scope: !6, inlinedAt: !15) 123