derek.holloway
7502bf64a4
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41 lines
1.1 KiB
LLVM
41 lines
1.1 KiB
LLVM
; RUN: opt < %s -passes=lint -disable-output 2>&1 | FileCheck %s
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declare void @f1(ptr noalias readonly, ptr)
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define void @f2(ptr %a) {
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entry:
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call void @f1(ptr %a, ptr %a)
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ret void
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}
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; Lint should complain about us passing %a to both arguments, since the noalias
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; argument may depend on writes to the other.
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; CHECK: Unusual: noalias argument aliases another argument
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; CHECK-NEXT: call void @f1(ptr %a, ptr %a)
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declare void @f3(ptr noalias, ptr readonly)
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define void @f4(ptr %a) {
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entry:
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call void @f3(ptr %a, ptr %a)
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ret void
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}
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; Lint should complain about us passing %a to both arguments, since writes to
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; the noalias argument may cause a dependency for the other.
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; CHECK: Unusual: noalias argument aliases another argument
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; CHECK-NEXT: call void @f3(ptr %a, ptr %a)
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declare void @f5(ptr noalias readonly, ptr readonly)
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define void @f6(ptr %a) {
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entry:
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call void @f5(ptr %a, ptr %a)
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ret void
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}
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; Lint should not complain about passing %a to both arguments even if one is
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; noalias, since they are both readonly and thus have no dependence.
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; CHECK-NOT: Unusual: noalias argument aliases another argument
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; CHECK-NOT: call void @f5(ptr %a, ptr %a)
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