Jonas Jensen b4385c6e60 C++: Don't use GVN in AST DataFlow BarrierNode ...

It turns out that the evaluator will evaluate the GVN stage even when no
predicate from it is needed after optimization of the subsequent stages.
The GVN library is expensive to evaluate, and it'll become even more
expensive when we switch its implementation to IR.

This PR disables the use of GVN in `DataFlow::BarrierNode` for the AST
data-flow library, which should improve performance when evaluating a
single data-flow query on a snapshot with no cache. Precision decreases
slightly, leading to a new FP in the qltests.

There is no corresponding change for the IR data-flow library since IR
GVN is not very expensive.

2020-02-04 08:40:36 +01:00

..

examples

CPP: Autoformat cookbook examples.

2019-08-02 15:29:20 +02:00

src

C++: Don't use GVN in AST DataFlow BarrierNode

2020-02-04 08:40:36 +01:00

test

C++: Don't use GVN in AST DataFlow BarrierNode

2020-02-04 08:40:36 +01:00