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Cherry-pick some changes for SIMD and WebAssembly #96

Merged
merged 4 commits into from
Mar 18, 2021
Merged

Cherry-pick some changes for SIMD and WebAssembly #96

merged 4 commits into from
Mar 18, 2021

Commits on Mar 18, 2021

  1. [WebAssembly] Prototype i8x16 to i32x4 widening instructions 

    As proposed in WebAssembly/simd#395 and matching the
opcodes used in V8:
https://chromium-review.googlesource.com/c/v8/v8/+/2617385/4/src/wasm/wasm-opcodes.h

Differential Revision: https://reviews.llvm.org/D95557
    @tlively @alexcrichton
    tlively authored and alexcrichton committed Mar 18, 2021
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  2. [WebAssembly] Remove unimplemented-simd target feature 

    Now that the WebAssembly SIMD specification is finalized and engines are
generally up-to-date, there is no need for a separate target feature for gating
SIMD instructions that engines have not implemented. With this change,
v128.const is now enabled by default with the simd128 target feature.

Differential Revision: https://reviews.llvm.org/D98457
    @tlively @alexcrichton
    tlively authored and alexcrichton committed Mar 18, 2021
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  3. [WebAssembly] Remove experimental SIMD instructions 

    Removes the instruction definitions, intrinsics, and builtins for qfma/qfms,
signselect, and prefetch instructions, which were not included in the final
WebAssembly SIMD spec.

Depends on D98457.

Differential Revision: https://reviews.llvm.org/D98466
    @tlively @alexcrichton
    tlively authored and alexcrichton committed Mar 18, 2021
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  4. [WebAssembly] Finalize SIMD names and opcodes 

    Updates the names (e.g. widen => extend, saturate => sat) and opcodes of all
SIMD instructions to match the finalized SIMD spec. Deliberately does not change
the public interface in wasm_simd128.h yet; that will require more care.

Depends on D98466.

Differential Revision: https://reviews.llvm.org/D98676
    @tlively @alexcrichton
    tlively authored and alexcrichton committed Mar 18, 2021
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