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runtime: add wasm bulk memory operations

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The existing implementation uses loops to implement bulk memory
operations such as memcpy and memclr. Now that bulk memory operations
have been standardized and are implemented in all major browsers and
engines (see https://webassembly.org/roadmap/), we should use them
to improve performance.

Updates #28360

Change-Id: I28df0e0350287d5e7e1d1c09a4064ea1054e7575
Reviewed-on: https://go-review.googlesource.com/c/go/+/444935
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Keith Randall <khr@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Richard Musiol <neelance@gmail.com>
Reviewed-by: David Chase <drchase@google.com>
Auto-Submit: Richard Musiol <neelance@gmail.com>
Reviewed-by: Richard Musiol <neelance@gmail.com>
This commit is contained in:
Garet Halliday 2022-10-21 22:22:12 -05:00 • committed by Gopher Robot
parent 599a1e40c6
commit 50557edf10
15 changed files with 59 additions and 347 deletions
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2
src/cmd/link/internal/wasm/asm.go
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@ -60,8 +60,6 @@ var wasmFuncTypes = map[string]*wasmFuncType{
"wasm_export_resume": {Params: []byte{}}, //
"wasm_export_getsp": {Results: []byte{I32}}, // sp
"wasm_pc_f_loop": {Params: []byte{}}, //
"runtime.wasmMove": {Params: []byte{I32, I32, I32}}, // dst, src, len
"runtime.wasmZero": {Params: []byte{I32, I32}}, // ptr, len
"runtime.wasmDiv": {Params: []byte{I64, I64}, Results: []byte{I64}}, // x, y -> x/y
"runtime.wasmTruncS": {Params: []byte{F64}, Results: []byte{I64}}, // x -> int(x)
"runtime.wasmTruncU": {Params: []byte{F64}, Results: []byte{I64}}, // x -> uint(x)