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Florian Hahn 8002fe7d67 [BasicAA] Be more careful with modulo ops on VariableGEPIndex. 
(V * Scale) % X may not produce the same result for any possible value
of V, e.g. if the multiplication overflows. This means we currently
incorrectly determine NoAlias in some cases.

This patch updates LinearExpression to track whether the expression
has NSW and uses that to adjust the scale used for alias checks.

Reviewed By: nikic

Differential Revision: https://reviews.llvm.org/D99424
2021-06-29 09:22:36 +01:00
..
llvm [BasicAA] Be more careful with modulo ops on VariableGEPIndex. 2021-06-29 09:22:36 +01:00
llvm-c [ORC][C-bindings] Add access to LLJIT IRTransformLayer, ThreadSafeModule utils. 2021-06-19 11:50:27 +10:00