Implement prototype v128.load{32,64}_zero instructions #3011
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Specified in WebAssembly/simd#237. Since these are just prototypes necessary for benchmarking, this PR does not add support for these instructions to the fuzzer or the C or JS APIs. This PR also renumbers the QFMA instructions that previously used the opcodes for these new instructions. The renumbering matches the renumbering in V8 and LLVM.
aheejin
approved these changes
Aug 1, 2020
test/simd.wast.fromBinary
Outdated
| @@ -896,8 +896,10 @@ | |||
| ) | |||
| ) | |||
| (func $f32x4.qfma (param $0 v128) (param $1 v128) (param $2 v128) (result v128) | |||
| (f32x4.qfma | |||
| (drop | |||
MaxGraey
reviewed
Aug 1, 2020
| V128Load32Zero = 0xfc, | ||
| V128Load64Zero = 0xfd, | ||
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| F32x4QFMA = 0xb4, |
There was a problem hiding this comment.
0xb4 already used for I32x4DotSVecI16x8:
https://github.com/WebAssembly/binaryen/blob/master/src/wasm-binary.h#L836
Is it correct?
kripken
approved these changes
Aug 3, 2020
|
Yes, this is the correct renumbering, although the opcode collision is unintentional. I will shift the dot instruction opcode to use the number used by V8 as well. See https://github.com/WebAssembly/tool-conventions/blob/master/Linking.md#target-features-section for the numbering I am following. |
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Specified in WebAssembly/simd#237. Since these
are just prototypes necessary for benchmarking, this PR does not add
support for these instructions to the fuzzer or the C or JS APIs. This
PR also renumbers the QFMA instructions that previously used the
opcodes for these new instructions. The renumbering matches the
renumbering in V8 and LLVM.