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2018 Jun 18
2
Question about Alias Analysis with restrict keyword
...Size && 1303         V2Size == MemoryLocation::UnknownSize) 1304       return MayAlias; 1305 1306     AliasResult R = aliasCheck(UnderlyingV1, MemoryLocation::UnknownSize, 1307                                AAMDNodes(), V2, MemoryLocation::UnknownSize, 1308                                V2AAInfo, nullptr, UnderlyingV2); On line 1306, we can see the V1Size and V2Size are set up with "MemoryLocation::UnknownSize" and it causes may-alias. On line 1302 and 1033, there are checking code for "MemoryLocation::UnknownSize"... I am not sure whether it is bug or not... Can so...
2020 Mar 18
2
valid BasicAA behavior?
Am Di., 17. März 2020 um 16:56 Uhr schrieb Chawla, Pankaj via llvm-dev <llvm-dev at lists.llvm.org>: > All I am expecting from DA is a direction vector containing (*). There seems to be a bug in DI, see Felipe's answer. > I think the main problem is that currently there is no exact way DA can query AliasAnalysis in a ‘conservatively correct’ manner. > > Using UnknownSize