зеркало из https://github.com/mozilla/gecko-dev.git
99c4a5208a
In instances where an MDefinition* can map to more than one LIR node, a simple pointer test is insufficient to avoid breaking the regalloc invariant that if one LIR node argument to a multi-operand operation is reused for the result, then other distinct LIR node arguments cannot be used atStart. (This invariant is implicit: when it is broken, an assert will sometimes fire when the regalloc attempts to verify that its allocation is coherent.) This patch abstracts the equality test into a predicate, uses the predicate everywhere relevant, and makes the predicate take into account the one situation where it is known that the MIR node maps to two LIR nodes: when it is an emitAtUses constant. The patch also documents the more complicated condition. Differential Revision: https://phabricator.services.mozilla.com/D116464 |
||
|---|---|---|
| .. | ||
| ductwork/debugger | ||
| examples | ||
| public | ||
| src | ||
| xpconnect | ||
| app.mozbuild | ||
| ffi.configure | ||
| moz.build | ||
| moz.configure | ||
| sub.configure | ||