cmd/internal/obj/arm64: golang assembler handles arm64 instruction movk incorrectly #21398
Comments
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Change https://golang.org/cl/54990 mentions this issue: |
As I have mentioned in an earlier similar issue, even this is the way to reproduce the failure, it doesn't help understanding the problem. Please mention what the expected encoding is, and what the wrong encoding the assembler emits. Thanks. |
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@cherrymui I am sorry that I forgot to add the wrong encoding information as you mentioned before. |
Please answer these questions before submitting your issue. Thanks!
What version of Go are you using (
go version)?go version devel +a6ae01a Thu Aug 10 21:45:01 2017 +0000 linux/arm64
What operating system and processor architecture are you using (
go env)?GOARCH="arm64"
GOBIN=""
GOEXE=""
GOHOSTARCH="arm64"
GOHOSTOS="linux"
GOOS="linux"
GOPATH="/home/fanzha02/go"
GORACE=""
GOROOT="/mnt/share/homes/fanzha02/push/asmforus/golang"
GOTOOLDIR="/mnt/share/homes/fanzha02/push/asmforus/golang/pkg/tool/linux_arm64"
GCCGO="gccgo"
CC="gcc"
GOGCCFLAGS="-fPIC -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build257833270=/tmp/go-build -gno-record-gcc-switches"
CXX="g++"
CGO_ENABLED="1"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
What did you do?
cd src/cmd/asm/internal/asm
vi testdate/arm64enc.s
uncomment MOVK/MOVKW test cases
go test -run "ARM64Encoder"
If possible, provide a recipe for reproducing the error.
A complete runnable program is good.
A link on play.golang.org is best.
What did you expect to see?
go test successfully
What did you see instead?
the MOVK/MOVKW test cases are failed
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