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 -S \ 4; RUN: | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-STATIC 5; RUN: opt < %s -asan -asan-module -asan-stack-dynamic-alloca=1 -S \ 6; RUN: | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-DYNAMIC 7 8target 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" 9target triple = "x86_64-unknown-linux-gnu" 10 11declare void @Use(i8*) 12 13; CHECK: private unnamed_addr constant{{.*}}3 32 10 3 XXX 64 20 3 YYY 128 30 3 ZZZ 14; CHECK: private unnamed_addr constant{{.*}}3 32 5 3 AAA 64 55 3 BBB 160 555 3 CCC 15; CHECK: private unnamed_addr constant{{.*}}3 256 128 3 CCC 448 128 3 BBB 608 128 3 AAA 16 17define void @Func1() sanitize_address { 18entry: 19; CHECK-LABEL: Func1 20 21; CHECK-STATIC: alloca [192 x i8] 22; CHECK-DYNAMIC: alloca i8, i64 192 23 24; CHECK-NOT: alloca 25; CHECK: ret void 26 %XXX = alloca [10 x i8], align 1 27 %YYY = alloca [20 x i8], align 1 28 %ZZZ = alloca [30 x i8], align 1 29 %arr1.ptr = bitcast [10 x i8]* %XXX to i8* 30 store volatile i8 0, i8* %arr1.ptr 31 %arr2.ptr = bitcast [20 x i8]* %YYY to i8* 32 store volatile i8 0, i8* %arr2.ptr 33 %arr3.ptr = bitcast [30 x i8]* %ZZZ to i8* 34 store volatile i8 0, i8* %arr3.ptr 35 ret void 36} 37 38define void @Func2() sanitize_address { 39entry: 40; CHECK-LABEL: Func2 41 42; CHECK-STATIC: alloca [864 x i8] 43; CHECK-DYNAMIC: alloca i8, i64 864 44 45; CHECK-NOT: alloca 46; CHECK: ret void 47 %AAA = alloca [5 x i8], align 1 48 %BBB = alloca [55 x i8], align 1 49 %CCC = alloca [555 x i8], align 1 50 %arr1.ptr = bitcast [5 x i8]* %AAA to i8* 51 store volatile i8 0, i8* %arr1.ptr 52 %arr2.ptr = bitcast [55 x i8]* %BBB to i8* 53 store volatile i8 0, i8* %arr2.ptr 54 %arr3.ptr = bitcast [555 x i8]* %CCC to i8* 55 store volatile i8 0, i8* %arr3.ptr 56 ret void 57} 58 59; Check that we reorder vars according to alignment and handle large alignments. 60define void @Func3() sanitize_address { 61entry: 62; CHECK-LABEL: Func3 63 64; CHECK-STATIC: alloca [768 x i8] 65; CHECK-DYNAMIC: alloca i8, i64 768 66 67; CHECK-NOT: alloca 68; CHECK: ret void 69 %AAA = alloca [128 x i8], align 16 70 %BBB = alloca [128 x i8], align 64 71 %CCC = alloca [128 x i8], align 256 72 %arr1.ptr = bitcast [128 x i8]* %AAA to i8* 73 store volatile i8 0, i8* %arr1.ptr 74 %arr2.ptr = bitcast [128 x i8]* %BBB to i8* 75 store volatile i8 0, i8* %arr2.ptr 76 %arr3.ptr = bitcast [128 x i8]* %CCC to i8* 77 store volatile i8 0, i8* %arr3.ptr 78 ret void 79} 80