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 ret void 30} 31 32define void @Func2() sanitize_address { 33entry: 34; CHECK-LABEL: Func2 35 36; CHECK-STATIC: alloca [864 x i8] 37; CHECK-DYNAMIC: alloca i8, i64 864 38 39; CHECK-NOT: alloca 40; CHECK: ret void 41 %AAA = alloca [5 x i8], align 1 42 %BBB = alloca [55 x i8], align 1 43 %CCC = alloca [555 x i8], align 1 44 ret void 45} 46 47; Check that we reorder vars according to alignment and handle large alignments. 48define void @Func3() sanitize_address { 49entry: 50; CHECK-LABEL: Func3 51 52; CHECK-STATIC: alloca [768 x i8] 53; CHECK-DYNAMIC: alloca i8, i64 768 54 55; CHECK-NOT: alloca 56; CHECK: ret void 57 %AAA = alloca [128 x i8], align 16 58 %BBB = alloca [128 x i8], align 64 59 %CCC = alloca [128 x i8], align 256 60 ret void 61} 62