1; Test KHWASan instrumentation. 2; 3; RUN: opt < %s -passes=hwasan -hwasan-kernel=1 -hwasan-recover=1 -S | FileCheck %s --allow-empty --check-prefixes=INIT 4; RUN: opt < %s -passes=hwasan -hwasan-kernel=1 -hwasan-recover=1 -S | FileCheck %s --check-prefixes=CHECK,NOOFFSET,MATCH-ALL 5; RUN: opt < %s -passes=hwasan -hwasan-kernel=1 -hwasan-recover=1 -hwasan-mapping-offset=12345678 -S | FileCheck %s --check-prefixes=CHECK,OFFSET,MATCH-ALL 6; RUN: opt < %s -passes=hwasan -hwasan-kernel=1 -hwasan-recover=1 -hwasan-match-all-tag=-1 -S | FileCheck %s --check-prefixes=CHECK,NOOFFSET,NO-MATCH-ALL 7; RUN: opt < %s -passes=hwasan -hwasan-kernel=1 -hwasan-recover=1 -hwasan-inline-all-checks=0 -hwasan-mapping-offset=12345678 -S | FileCheck %s --check-prefixes=OUTLINE 8 9target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128" 10target triple = "aarch64--linux-android" 11 12define i8 @test_load(ptr %a) sanitize_hwaddress { 13; CHECK-LABEL: @test_load( 14; OFFSET: %[[SHADOW:[^ ]*]] = call ptr asm "", "=r,0"(ptr inttoptr (i64 12345678 to ptr)) 15; CHECK: %[[A:[^ ]*]] = ptrtoint ptr %a to i64 16; CHECK: %[[B:[^ ]*]] = lshr i64 %[[A]], 56 17; CHECK: %[[PTRTAG:[^ ]*]] = trunc i64 %[[B]] to i8 18; CHECK: %[[C:[^ ]*]] = or i64 %[[A]], -72057594037927936 19; CHECK: %[[D:[^ ]*]] = lshr i64 %[[C]], 4 20 21; NOOFFSET: %[[E:[^ ]*]] = inttoptr i64 %[[D]] to ptr 22 23; OFFSET: %[[E:[^ ]*]] = getelementptr i8, ptr %[[SHADOW]], i64 %[[D]] 24 25; CHECK: %[[MEMTAG:[^ ]*]] = load i8, ptr %[[E]] 26; CHECK: %[[F:[^ ]*]] = icmp ne i8 %[[PTRTAG]], %[[MEMTAG]] 27 28; MATCH-ALL: %[[G:[^ ]*]] = icmp ne i8 %[[PTRTAG]], -1 29; MATCH-ALL: %[[H:[^ ]*]] = and i1 %[[F]], %[[G]] 30; MATCH-ALL: br i1 %[[H]], label {{.*}}, label {{.*}}, !prof {{.*}} 31 32; NO-MATCH-ALL: br i1 %[[F]], label {{.*}}, label {{.*}}, !prof {{.*}} 33 34; CHECK: call void asm sideeffect "brk #2336", "{x0}"(i64 %[[A]]) 35; CHECK: br label 36 37; CHECK: %[[G:[^ ]*]] = load i8, ptr %a, align 4 38; CHECK: ret i8 %[[G]] 39 40; OUTLINE: %[[SHADOW:[^ ]*]] = call ptr asm "", "=r,0"(ptr inttoptr (i64 12345678 to ptr)) 41; OUTLINE: call void @llvm.hwasan.check.memaccess(ptr %[[SHADOW]], ptr %a, i32 67043360) 42entry: 43 %b = load i8, ptr %a, align 4 44 ret i8 %b 45} 46 47; INIT-NOT: call void @__hwasan_init 48