Open Bug 1752504 Opened 3 years ago Updated 2 years ago

Fold unary/binary MIR operations involving NaN

Categories

(Core :: JavaScript Engine: JIT, task, P3)

Product:
Core
Component:
JavaScript Engine: JIT
Type:
task

Tracking

()

People

(Reporter: jandem, Unassigned)

References

(Blocks 1 open bug)

Details

In bug 1752281 we're adding CacheIR support for optimizing things like number + undefined to number + NaN.

It would be nice if Warp could then fold arithmetic operations where one side is MConstant(NaN) to NaN.

Note: we need to be careful with JSOp::Pow because NaN ** 0 => 1.

Severity: normal → S3
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