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[asan] instrument cmpxchg and atomicrmw

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157683 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Kostya Serebryany
2012-05-30 09:04:06 +00:00
parent fe3516f9a5
commit e6cf2e0bd0
2 changed files with 52 additions and 8 deletions
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22
test/Instrumentation/AddressSanitizer/test64.ll
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@@ -12,3 +12,25 @@ entry:
; Check for ASAN's Offset for 64-bit (2^44)
; CHECK-NEXT: 17592186044416
; CHECK: ret
define void @example_atomicrmw(i64* %ptr) nounwind uwtable address_safety {
entry:
%0 = atomicrmw add i64* %ptr, i64 1 seq_cst
ret void
}
; CHECK: @example_atomicrmw
; CHECK: lshr {{.*}} 3
; CHECK: atomicrmw
; CHECK: ret
define void @example_cmpxchg(i64* %ptr, i64 %compare_to, i64 %new_value) nounwind uwtable address_safety {
entry:
%0 = cmpxchg i64* %ptr, i64 %compare_to, i64 %new_value seq_cst
ret void
}
; CHECK: @example_cmpxchg
; CHECK: lshr {{.*}} 3
; CHECK: cmpxchg
; CHECK: ret