derek.holloway
7502bf64a4
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71 lines
2.5 KiB
LLVM
71 lines
2.5 KiB
LLVM
; REQUIRES: x86-registered-target
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; RUN: opt < %s -S -asan-instrumentation-with-call-threshold=0 -passes=asan -asan-use-stack-safety=0 -o - | FileCheck %s --implicit-check-not="call {{.*}} @__asan_{{load|store|stack}}" --check-prefixes=CHECK,NOSAFETY
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; RUN: opt < %s -S -asan-instrumentation-with-call-threshold=0 -passes=asan | FileCheck %s --implicit-check-not="call {{.*}} @__asan_{{load|store|stack}}"
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; CHECK-LABEL: define i32 @load
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define i32 @load() sanitize_address {
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%buf = alloca [10 x i8], align 1
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; NOSAFETY: call i64 @__asan_stack_malloc
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%1 = load volatile i8, ptr %buf, align 1
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; NOSAFETY: call void @__asan_load1
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ret i32 0
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}
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; CHECK-LABEL: define i32 @store
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define i32 @store() sanitize_address {
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%buf = alloca [10 x i8], align 1
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; NOSAFETY: call i64 @__asan_stack_malloc
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store volatile i8 0, ptr %buf
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; NOSAFETY: call void @__asan_store1
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ret i32 0
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}
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; CHECK-LABEL: define i32 @unsafe_alloca
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define i32 @unsafe_alloca(i32 %i) sanitize_address {
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%buf.sroa.0 = alloca [10 x i8], align 4
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; CHECK: call i64 @__asan_stack_malloc
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%ptr = getelementptr [10 x i8], ptr %buf.sroa.0, i32 %i, i32 0
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store volatile i8 0, ptr %ptr, align 4
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; CHECK: call void @__asan_store1
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store volatile i8 0, ptr %buf.sroa.0, align 4
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; NOSAFETY: call void @__asan_store1
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ret i32 0
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}
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; CHECK-LABEL: define void @atomicrmw
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define void @atomicrmw() sanitize_address {
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%buf = alloca [10 x i8], align 1
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; NOSAFETY: call i64 @__asan_stack_malloc
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%1 = atomicrmw add ptr %buf, i8 1 seq_cst
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; NOSAFETY: call void @__asan_store1
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ret void
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}
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; CHECK-LABEL: define void @cmpxchg
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define void @cmpxchg(i8 %compare_to, i8 %new_value) sanitize_address {
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%buf = alloca [10 x i8], align 1
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; NOSAFETY: call i64 @__asan_stack_malloc
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%1 = cmpxchg ptr %buf, i8 %compare_to, i8 %new_value seq_cst seq_cst
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; NOSAFETY: call void @__asan_store1
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ret void
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}
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%struct.S = type { i32, i32 }
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; CHECK-LABEL: define %struct.S @exchange(
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; NOSAFETY: call i64 @__asan_stack_malloc
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; CHECK: call ptr @__asan_memcpy(
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; CHECK: call ptr @__asan_memcpy(
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; NOSAFETY: call void @__asan_loadN(
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define %struct.S @exchange(ptr %a, ptr %b) sanitize_address {
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entry:
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%tmp = alloca %struct.S, align 4
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call void @llvm.memcpy.p0.p0.i64(ptr align 4 %tmp, ptr align 4 %a, i64 8, i1 false)
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call void @llvm.memcpy.p0.p0.i64(ptr align 4 %a, ptr align 4 %b, i64 8, i1 false)
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%ret = load %struct.S, ptr %tmp
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ret %struct.S %ret
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}
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declare void @llvm.memcpy.p0.p0.i64(ptr nocapture, ptr nocapture readonly, i64, i1) nounwind
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