| ; Test the ASan's stack layout. |
| ; More tests in tests/Transforms/Utils/ASanStackFrameLayoutTest.cpp |
| ; RUN: opt < %s -asan -asan-module -asan-stack-dynamic-alloca=0 -asan-use-after-scope -S \ |
| ; RUN: | FileCheck %s --check-prefixes=CHECK,CHECK-STATIC |
| ; RUN: opt < %s -asan -asan-module -asan-stack-dynamic-alloca=1 -asan-use-after-scope -S \ |
| ; RUN: | FileCheck %s --check-prefixes=CHECK,CHECK-DYNAMIC |
| |
| target 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" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| declare void @Use(i8*) |
| declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) nounwind |
| declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) nounwind |
| |
| ; CHECK: private unnamed_addr constant{{.*}}3 32 10 3 XXX 64 20 3 YYY 128 30 3 ZZZ\0 |
| ; CHECK: private unnamed_addr constant{{.*}}3 32 5 3 AAA 64 55 3 BBB 160 555 3 CCC\0 |
| ; CHECK: private unnamed_addr constant{{.*}}3 256 128 3 CCC 448 128 3 BBB 608 128 3 AAA\0 |
| ; CHECK: private unnamed_addr constant{{.*}}2 32 4 3 AAA 48 4 5 BBB:7\0 |
| |
| define void @Func1() sanitize_address { |
| entry: |
| ; CHECK-LABEL: Func1 |
| |
| ; CHECK-STATIC: alloca [192 x i8] |
| ; CHECK-STATIC: %asan_local_stack_base = alloca i64 |
| ; CHECK-DYNAMIC: alloca i8, i64 192 |
| |
| ; CHECK-NOT: alloca |
| ; CHECK: ret void |
| %XXX = alloca [10 x i8], align 1 |
| %YYY = alloca [20 x i8], align 1 |
| %ZZZ = alloca [30 x i8], align 1 |
| %arr1.ptr = bitcast [10 x i8]* %XXX to i8* |
| store volatile i8 0, i8* %arr1.ptr |
| %arr2.ptr = bitcast [20 x i8]* %YYY to i8* |
| store volatile i8 0, i8* %arr2.ptr |
| %arr3.ptr = bitcast [30 x i8]* %ZZZ to i8* |
| store volatile i8 0, i8* %arr3.ptr |
| ret void |
| } |
| |
| define void @Func2() sanitize_address { |
| entry: |
| ; CHECK-LABEL: Func2 |
| |
| ; CHECK-STATIC: alloca [864 x i8] |
| ; CHECK-STATIC: %asan_local_stack_base = alloca i64 |
| ; CHECK-DYNAMIC: alloca i8, i64 864 |
| |
| ; CHECK-NOT: alloca |
| ; CHECK: ret void |
| %AAA = alloca [5 x i8], align 1 |
| %BBB = alloca [55 x i8], align 1 |
| %CCC = alloca [555 x i8], align 1 |
| %arr1.ptr = bitcast [5 x i8]* %AAA to i8* |
| store volatile i8 0, i8* %arr1.ptr |
| %arr2.ptr = bitcast [55 x i8]* %BBB to i8* |
| store volatile i8 0, i8* %arr2.ptr |
| %arr3.ptr = bitcast [555 x i8]* %CCC to i8* |
| store volatile i8 0, i8* %arr3.ptr |
| ret void |
| } |
| |
| ; Check that we reorder vars according to alignment and handle large alignments. |
| define void @Func3() sanitize_address { |
| entry: |
| ; CHECK-LABEL: Func3 |
| |
| ; CHECK-STATIC: alloca [768 x i8] |
| ; CHECK-STATIC: %asan_local_stack_base = alloca i64 |
| ; CHECK-DYNAMIC: alloca i8, i64 768 |
| |
| ; CHECK-NOT: alloca |
| ; CHECK: ret void |
| %AAA = alloca [128 x i8], align 16 |
| %BBB = alloca [128 x i8], align 64 |
| %CCC = alloca [128 x i8], align 256 |
| %arr1.ptr = bitcast [128 x i8]* %AAA to i8* |
| store volatile i8 0, i8* %arr1.ptr |
| %arr2.ptr = bitcast [128 x i8]* %BBB to i8* |
| store volatile i8 0, i8* %arr2.ptr |
| %arr3.ptr = bitcast [128 x i8]* %CCC to i8* |
| store volatile i8 0, i8* %arr3.ptr |
| ret void |
| } |
| |
| ; Check that line numbers are attached to variable names if variable |
| ; in the same file as a function. |
| define void @Func5() sanitize_address #0 !dbg !11 { |
| %AAA = alloca i32, align 4 ; File is not the same as !11 |
| %BBB = alloca i32, align 4 ; File is the same as !11 |
| %BBB.ptr = bitcast i32* %BBB to i8* |
| call void @llvm.lifetime.start.p0i8(i64 4, i8* nonnull %BBB.ptr), !dbg !12 |
| store volatile i32 5, i32* %BBB, align 4 |
| %AAA.ptr = bitcast i32* %AAA to i8* |
| call void @llvm.lifetime.start.p0i8(i64 4, i8* nonnull %AAA.ptr), !dbg !14 |
| store volatile i32 3, i32* %AAA, align 4 |
| call void @llvm.lifetime.end.p0i8(i64 4, i8* nonnull %AAA.ptr), !dbg !17 |
| call void @llvm.lifetime.end.p0i8(i64 4, i8* nonnull %BBB.ptr), !dbg !18 |
| ret void |
| } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!3, !4} |
| !3 = !{i32 2, !"Dwarf Version", i32 4} |
| !4 = !{i32 2, !"Debug Info Version", i32 3} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1) |
| !1 = !DIFile(filename: "../file1.c", directory: "/") |
| !11 = distinct !DISubprogram(name: "Func5", scope: !1, file: !1, line: 6, unit: !0) |
| !12 = !DILocation(line: 7, column: 3, scope: !11) |
| !18 = !DILocation(line: 10, column: 1, scope: !11) |
| |
| !21 = !DIFile(filename: "../file2.c", directory: "/") |
| !6 = distinct !DISubprogram(name: "Func4", scope: !1, file: !21, line: 2, unit: !0) |
| !15 = distinct !DILocation(line: 8, column: 3, scope: !11) |
| !14 = !DILocation(line: 3, column: 3, scope: !6, inlinedAt: !15) |
| !17 = !DILocation(line: 4, column: 1, scope: !6, inlinedAt: !15) |