derek.holloway
7502bf64a4
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48 lines
2.2 KiB
LLVM
48 lines
2.2 KiB
LLVM
; Test KHWASan instrumentation.
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;
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; RUN: opt < %s -passes=hwasan -hwasan-kernel=1 -hwasan-recover=1 -S | FileCheck %s --allow-empty --check-prefixes=INIT
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; RUN: opt < %s -passes=hwasan -hwasan-kernel=1 -hwasan-recover=1 -S | FileCheck %s --check-prefixes=CHECK,NOOFFSET,MATCH-ALL
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; RUN: opt < %s -passes=hwasan -hwasan-kernel=1 -hwasan-recover=1 -hwasan-mapping-offset=12345678 -S | FileCheck %s --check-prefixes=CHECK,OFFSET,MATCH-ALL
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; 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
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; 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
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target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
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target triple = "aarch64--linux-android"
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define i8 @test_load(ptr %a) sanitize_hwaddress {
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; CHECK-LABEL: @test_load(
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; OFFSET: %[[SHADOW:[^ ]*]] = call ptr asm "", "=r,0"(ptr inttoptr (i64 12345678 to ptr))
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; CHECK: %[[A:[^ ]*]] = ptrtoint ptr %a to i64
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; CHECK: %[[B:[^ ]*]] = lshr i64 %[[A]], 56
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; CHECK: %[[PTRTAG:[^ ]*]] = trunc i64 %[[B]] to i8
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; CHECK: %[[C:[^ ]*]] = or i64 %[[A]], -72057594037927936
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; CHECK: %[[D:[^ ]*]] = lshr i64 %[[C]], 4
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; NOOFFSET: %[[E:[^ ]*]] = inttoptr i64 %[[D]] to ptr
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; OFFSET: %[[E:[^ ]*]] = getelementptr i8, ptr %[[SHADOW]], i64 %[[D]]
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; CHECK: %[[MEMTAG:[^ ]*]] = load i8, ptr %[[E]]
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; CHECK: %[[F:[^ ]*]] = icmp ne i8 %[[PTRTAG]], %[[MEMTAG]]
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; MATCH-ALL: %[[G:[^ ]*]] = icmp ne i8 %[[PTRTAG]], -1
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; MATCH-ALL: %[[H:[^ ]*]] = and i1 %[[F]], %[[G]]
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; MATCH-ALL: br i1 %[[H]], label {{.*}}, label {{.*}}, !prof {{.*}}
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; NO-MATCH-ALL: br i1 %[[F]], label {{.*}}, label {{.*}}, !prof {{.*}}
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; CHECK: call void asm sideeffect "brk #2336", "{x0}"(i64 %[[A]])
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; CHECK: br label
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; CHECK: %[[G:[^ ]*]] = load i8, ptr %a, align 4
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; CHECK: ret i8 %[[G]]
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; OUTLINE: %[[SHADOW:[^ ]*]] = call ptr asm "", "=r,0"(ptr inttoptr (i64 12345678 to ptr))
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; OUTLINE: call void @llvm.hwasan.check.memaccess(ptr %[[SHADOW]], ptr %a, i32 67043360)
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entry:
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%b = load i8, ptr %a, align 4
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ret i8 %b
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}
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; INIT-NOT: call void @__hwasan_init
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