Stream: git-wasmtime

Topic: wasmtime / PR #4728 x64: Remove buggy rules for `sse_cmp_op`

Wasmtime GitHub notifications bot (Aug 17 2022 at 00:40):

elliottt opened PR #4728 from trevor/sse-cmp-op-bug to main:

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Wasmtime GitHub notifications bot (Aug 17 2022 at 00:44):

elliottt edited PR #4728 from trevor/sse-cmp-op-bug to main:

The rules for $F32X4 and $F64X2 overlap with the rules for (multi_lane 32 4) and (multi_lane 64 2) respectively. Additionally they would return SSE opcodes that must be used with xmm_rm_r_imm, but the result of sse_cmp_op is used directly with xmm_rm_r in the definition of vector_all_ones. If these cases were to suddenly become reachable through a heuristic change in ISLE, we would start seeing panics during code generation for lowerings that rely on vector_of_ones.

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Wasmtime GitHub notifications bot (Aug 17 2022 at 00:44):

elliottt has marked PR #4728 as ready for review.

Wasmtime GitHub notifications bot (Aug 17 2022 at 20:56):

elliottt updated PR #4728 from trevor/sse-cmp-op-bug to main.

Last updated: Dec 23 2024 at 12:05 UTC