| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 2 |
| ; Test alloca instrumentation when tags are generated by HWASan function. |
| ; |
| ; RUN: opt < %s -passes=hwasan -hwasan-generate-tags-with-calls -S | FileCheck %s |
| |
| target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| declare void @use32(ptr) |
| |
| define void @test_alloca() sanitize_hwaddress { |
| ; CHECK-LABEL: define void @test_alloca |
| ; CHECK-SAME: () #[[ATTR0:[0-9]+]] personality ptr @__hwasan_personality_thunk { |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[DOTHWASAN_SHADOW:%.*]] = call ptr asm "", "=r,0"(ptr null) |
| ; CHECK-NEXT: [[TMP0:%.*]] = call ptr @llvm.frameaddress.p0(i32 0) |
| ; CHECK-NEXT: [[TMP1:%.*]] = ptrtoint ptr [[TMP0]] to i64 |
| ; CHECK-NEXT: [[TMP2:%.*]] = lshr i64 [[TMP1]], 57 |
| ; CHECK-NEXT: [[HWASAN_UAR_TAG:%.*]] = and i64 [[TMP2]], 63 |
| ; CHECK-NEXT: [[X:%.*]] = alloca { i32, [12 x i8] }, align 16 |
| ; CHECK-NEXT: [[TMP3:%.*]] = call i8 @__hwasan_generate_tag() |
| ; CHECK-NEXT: [[TMP4:%.*]] = zext i8 [[TMP3]] to i64 |
| ; CHECK-NEXT: [[TMP5:%.*]] = ptrtoint ptr [[X]] to i64 |
| ; CHECK-NEXT: [[TMP6:%.*]] = and i64 [[TMP5]], -9079256848778919937 |
| ; CHECK-NEXT: [[TMP7:%.*]] = shl i64 [[TMP4]], 57 |
| ; CHECK-NEXT: [[TMP8:%.*]] = or i64 [[TMP6]], [[TMP7]] |
| ; CHECK-NEXT: [[X_HWASAN:%.*]] = inttoptr i64 [[TMP8]] to ptr |
| ; CHECK-NEXT: [[TMP9:%.*]] = trunc i64 [[TMP4]] to i8 |
| ; CHECK-NEXT: call void @__hwasan_tag_memory(ptr [[X]], i8 [[TMP9]], i64 16) |
| ; CHECK-NEXT: call void @use32(ptr nonnull [[X_HWASAN]]) |
| ; CHECK-NEXT: [[TMP10:%.*]] = trunc i64 [[HWASAN_UAR_TAG]] to i8 |
| ; CHECK-NEXT: call void @__hwasan_tag_memory(ptr [[X]], i8 [[TMP10]], i64 16) |
| ; CHECK-NEXT: ret void |
| ; |
| |
| entry: |
| %x = alloca i32, align 4 |
| call void @use32(ptr nonnull %x) |
| ret void |
| } |