fix[cartesian]: Scalarization of temporaries#2558
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romanc wants to merge 2 commits intoGridTools:mainfrom
Open
fix[cartesian]: Scalarization of temporaries#2558romanc wants to merge 2 commits intoGridTools:mainfrom
romanc wants to merge 2 commits intoGridTools:mainfrom
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Scalarization of read after write temporaries was eagerly scalarizing too many temporaries. If temporaries were written conditionaly, but read unconditionaly, the temporaries were still scalarized, leading to reads of undefined memory in case the condition for writing wasn't true. This PR changes `WriteBeforeReadTemporariesToScalars` to never scalarize if the write is conditional. This is defensive in the sense that if the read had the same condition, we could still scalarize. That functionality can be added later if deemed necessary.
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Description
Scalarization of read after write temporaries was eagerly scalarizing too many temporaries. If temporaries were written conditionaly, but read unconditionaly, the temporaries were still scalarized, leading to reads of undefined memory in case the condition for writing wasn't true.
This PR changes
WriteBeforeReadTemporariesToScalarsto never scalarize if the write is conditional. This is defensive in the sense that if the read had the same condition, we could still scalarize. That functionality can be added later if deemed necessary./cc @FlorianDeconinck
Requirements
N/A