Stream: git-wasmtime

Topic: wasmtime / Issue #2153 x64/newBE: improve lowering of CLI...

view this post on Zulip Wasmtime GitHub notifications bot (Aug 21 2020 at 09:25):

julian-seward1 opened Issue #2153:

PR #2149 provides an initial implementation of wasm atomics with x64/newBE. That includes an initial lowering of CLIF AtomicRmw into a multi-instruction sequence that is general, but inefficient in the case where the old value at the location is not required, which is probably a common occurrence. In such cases we could do much better by producing a single LOCK-prefixed integer read-modify-write instruction, for example lock xorq $27, (amode).

view this post on Zulip Wasmtime GitHub notifications bot (Sep 24 2020 at 13:55):

bnjbvr labeled Issue #2153:

PR #2149 provides an initial implementation of wasm atomics with x64/newBE. That includes an initial lowering of CLIF AtomicRmw into a multi-instruction sequence that is general, but inefficient in the case where the old value at the location is not required, which is probably a common occurrence. In such cases we could do much better by producing a single LOCK-prefixed integer read-modify-write instruction, for example lock xorq $27, (amode).

view this post on Zulip Wasmtime GitHub notifications bot (Sep 24 2020 at 13:55):

bnjbvr labeled Issue #2153:

PR #2149 provides an initial implementation of wasm atomics with x64/newBE. That includes an initial lowering of CLIF AtomicRmw into a multi-instruction sequence that is general, but inefficient in the case where the old value at the location is not required, which is probably a common occurrence. In such cases we could do much better by producing a single LOCK-prefixed integer read-modify-write instruction, for example lock xorq $27, (amode).

view this post on Zulip Wasmtime GitHub notifications bot (Sep 24 2020 at 13:55):

github-actions[bot] commented on Issue #2153:

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Last updated: Oct 23 2024 at 20:03 UTC