1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 2 2; Test kernel hwasan instrumentation for alloca. 3; 4; RUN: opt < %s -passes=hwasan -hwasan-kernel=1 -S | FileCheck %s 5 6target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128" 7target triple = "aarch64--linux-android" 8 9declare void @use32(ptr) 10 11define void @test_alloca() sanitize_hwaddress { 12; CHECK-LABEL: define void @test_alloca 13; CHECK-SAME: () #[[ATTR0:[0-9]+]] { 14; CHECK-NEXT: entry: 15; CHECK-NEXT: [[DOTHWASAN_SHADOW:%.*]] = call ptr asm "", "=r,0"(ptr null) 16; CHECK-NEXT: [[TMP0:%.*]] = call ptr @llvm.frameaddress.p0(i32 0) 17; CHECK-NEXT: [[TMP1:%.*]] = ptrtoint ptr [[TMP0]] to i64 18; CHECK-NEXT: [[TMP2:%.*]] = lshr i64 [[TMP1]], 20 19; CHECK-NEXT: [[HWASAN_STACK_BASE_TAG:%.*]] = xor i64 [[TMP1]], [[TMP2]] 20; CHECK-NEXT: [[HWASAN_UAR_TAG:%.*]] = lshr i64 [[TMP1]], 56 21; CHECK-NEXT: [[X:%.*]] = alloca { i32, [12 x i8] }, align 16 22; CHECK-NEXT: [[TMP3:%.*]] = xor i64 [[HWASAN_STACK_BASE_TAG]], 0 23; CHECK-NEXT: [[TMP4:%.*]] = ptrtoint ptr [[X]] to i64 24; CHECK-NEXT: [[TMP5:%.*]] = or i64 [[TMP4]], -72057594037927936 25; CHECK-NEXT: [[TMP6:%.*]] = shl i64 [[TMP3]], 56 26; CHECK-NEXT: [[TMP7:%.*]] = or i64 [[TMP6]], 72057594037927935 27; CHECK-NEXT: [[TMP8:%.*]] = and i64 [[TMP5]], [[TMP7]] 28; CHECK-NEXT: [[X_HWASAN:%.*]] = inttoptr i64 [[TMP8]] to ptr 29; CHECK-NEXT: [[TMP9:%.*]] = trunc i64 [[TMP3]] to i8 30; CHECK-NEXT: [[TMP10:%.*]] = ptrtoint ptr [[X]] to i64 31; CHECK-NEXT: [[TMP11:%.*]] = or i64 [[TMP10]], -72057594037927936 32; CHECK-NEXT: [[TMP12:%.*]] = lshr i64 [[TMP11]], 4 33; CHECK-NEXT: [[TMP13:%.*]] = inttoptr i64 [[TMP12]] to ptr 34; CHECK-NEXT: call void @llvm.memset.p0.i64(ptr align 1 [[TMP13]], i8 [[TMP9]], i64 1, i1 false) 35; CHECK-NEXT: call void @use32(ptr nonnull [[X_HWASAN]]) 36; CHECK-NEXT: [[TMP14:%.*]] = trunc i64 [[HWASAN_UAR_TAG]] to i8 37; CHECK-NEXT: [[TMP15:%.*]] = ptrtoint ptr [[X]] to i64 38; CHECK-NEXT: [[TMP16:%.*]] = or i64 [[TMP15]], -72057594037927936 39; CHECK-NEXT: [[TMP17:%.*]] = lshr i64 [[TMP16]], 4 40; CHECK-NEXT: [[TMP18:%.*]] = inttoptr i64 [[TMP17]] to ptr 41; CHECK-NEXT: call void @llvm.memset.p0.i64(ptr align 1 [[TMP18]], i8 [[TMP14]], i64 1, i1 false) 42; CHECK-NEXT: ret void 43; 44 45 46entry: 47 %x = alloca i32, align 4 48 call void @use32(ptr nonnull %x) 49 ret void 50} 51