Open Bug 1662344 Opened 4 years ago Updated 4 years ago

Warp: mark some MIR instructions as guard

Categories

(Core :: JavaScript Engine: JIT, task, P2)

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

Tracking

()

People

(Reporter: jandem, Unassigned)

References

(Blocks 1 open bug)

Details

anba noticed some MIR instructions do type guards and aren't marked as guard (eliminating them could result in correctness bugs if behavior is observable after a bailout).

GuardToInt32Index (uses MToNumberInt32), GuardToInt32ModUint32 (uses MTruncateToInt32), and GuardToUint8Clamped (uses MClampToUint8)

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