Wasmtime GitHub notifications bot (Dec 13 2022 at 23:11): Wasmtime GitHub notifications bot (Dec 13 2022 at 23:11):elliottt opened PR #5430 from trevor/fixed-nonallocatable-aliases to main:
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Wasmtime GitHub notifications bot (Dec 13 2022 at 23:15):elliottt edited PR #5430 from trevor/fixed-nonallocatable-aliases to main:
The only situation where we use physical registers now is for fixed non-allocatable registers, all other uses should be virtual register. As such, it no longer makes sense to track aliases of registers that aren't virtual, as that would imply that it's acceptable to satisfy a constraint by using a non-allocatable register.
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Wasmtime GitHub notifications bot (Dec 13 2022 at 23:25):elliottt updated PR #5430 from trevor/fixed-nonallocatable-aliases to main.
Wasmtime GitHub notifications bot (Dec 13 2022 at 23:29):elliottt updated PR #5430 from trevor/fixed-nonallocatable-aliases to main.
Wasmtime GitHub notifications bot (Dec 13 2022 at 23:37):elliottt updated PR #5430 from trevor/fixed-nonallocatable-aliases to main.
Wasmtime GitHub notifications bot (Dec 13 2022 at 23:38):elliottt updated PR #5430 from trevor/fixed-nonallocatable-aliases to main.
Wasmtime GitHub notifications bot (Dec 13 2022 at 23:39):cfallin submitted PR review.
Wasmtime GitHub notifications bot (Dec 13 2022 at 23:39):cfallin submitted PR review.
Wasmtime GitHub notifications bot (Dec 13 2022 at 23:39):cfallin created PR review comment:
s/alias/move/ -- "aliases" are what are used to make one vreg resolve to another (so that result vregs can be rewritten to the temp vregs returned by the toplevel lowering entry point), and imply a "timeless" equivalence, while "moves" are specific copy operations that occur in program flow. (Likewise the title of this PR/commit should change)
Wasmtime GitHub notifications bot (Dec 13 2022 at 23:42):elliottt updated PR #5430 from trevor/fixed-nonallocatable-aliases to main.
Wasmtime GitHub notifications bot (Dec 13 2022 at 23:43):elliottt has marked PR #5430 as ready for review.
Wasmtime GitHub notifications bot (Dec 13 2022 at 23:43):elliottt edited PR #5430 from trevor/fixed-nonallocatable-aliases to main:
The only situation where we use physical registers now is for fixed non-allocatable registers, all other uses should be virtual register. As such, it no longer makes sense to track aliases of registers that aren't virtual, as that would imply that it's acceptable to satisfy a constraint by using a non-allocatable register.
Fixes #5425
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Last updated: Dec 23 2024 at 12:05 UTC