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| author | Richard Musiol <mail@richard-musiol.de> | 2019-03-23 15:25:42 +0100 |
|---|---|---|
| committer | Richard Musiol <neelance@gmail.com> | 2019-03-28 20:23:05 +0000 |
| commit | 4d23cbc67100c1ce50b7d4fcc67e50091f92eb5b (patch) | |
| tree | 4f287374d425d181942392602db5c7b2e739aae2 /src/cmd/internal/obj/wasm | |
| parent | d23bf3daa9384a8c30d3231b5f02d0bea481415e (diff) | |
| download | go-4d23cbc67100c1ce50b7d4fcc67e50091f92eb5b.tar.xz | |
cmd/compile: add sign-extension operators on wasm
This change adds the GOWASM option "signext" to enable
the generation of experimental sign-extension operators.
The feature is in phase 4 of the WebAssembly proposal process:
https://github.com/WebAssembly/meetings/blob/master/process/phases.md
More information on the feature can be found at:
https://github.com/WebAssembly/sign-extension-ops/blob/master/proposals/sign-extension-ops/Overview.md
Change-Id: I6b30069390a8699fbecd9fb4d1d61e13c59b0333
Reviewed-on: https://go-review.googlesource.com/c/go/+/168882
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Diffstat (limited to 'src/cmd/internal/obj/wasm')
| -rw-r--r-- | src/cmd/internal/obj/wasm/a.out.go | 7 | ||||
| -rw-r--r-- | src/cmd/internal/obj/wasm/anames.go | 6 | ||||
| -rw-r--r-- | src/cmd/internal/obj/wasm/wasmobj.go | 2 |
3 files changed, 13 insertions, 2 deletions
diff --git a/src/cmd/internal/obj/wasm/a.out.go b/src/cmd/internal/obj/wasm/a.out.go index f1830ba036..29ea87f3b0 100644 --- a/src/cmd/internal/obj/wasm/a.out.go +++ b/src/cmd/internal/obj/wasm/a.out.go @@ -210,8 +210,13 @@ const ( AI64ReinterpretF64 AF32ReinterpretI32 AF64ReinterpretI64 + AI32Extend8S + AI32Extend16S + AI64Extend8S + AI64Extend16S + AI64Extend32S - // End of low-level WebAssembly instructions. + ALast // Sentinel: End of low-level WebAssembly instructions. ARESUMEPOINT // ACALLNORESUME is a call which is not followed by a resume point. diff --git a/src/cmd/internal/obj/wasm/anames.go b/src/cmd/internal/obj/wasm/anames.go index 7ef09d665e..fb4b72c398 100644 --- a/src/cmd/internal/obj/wasm/anames.go +++ b/src/cmd/internal/obj/wasm/anames.go @@ -177,6 +177,12 @@ var Anames = []string{ "I64ReinterpretF64", "F32ReinterpretI32", "F64ReinterpretI64", + "I32Extend8S", + "I32Extend16S", + "I64Extend8S", + "I64Extend16S", + "I64Extend32S", + "Last", "RESUMEPOINT", "CALLNORESUME", "RETUNWIND", diff --git a/src/cmd/internal/obj/wasm/wasmobj.go b/src/cmd/internal/obj/wasm/wasmobj.go index ad98cfe90a..dded62a4be 100644 --- a/src/cmd/internal/obj/wasm/wasmobj.go +++ b/src/cmd/internal/obj/wasm/wasmobj.go @@ -886,7 +886,7 @@ func assemble(ctxt *obj.Link, s *obj.LSym, newprog obj.ProgAlloc) { } switch { - case p.As < AUnreachable || p.As > AF64ReinterpretI64: + case p.As < AUnreachable || p.As >= ALast: panic(fmt.Sprintf("unexpected assembler op: %s", p.As)) case p.As < AEnd: w.WriteByte(byte(p.As - AUnreachable + 0x00)) |