Please answer these questions before submitting your issue. Thanks!

What version of Go are you using (go version)?

go version go1.8 windows/386

What operating system and processor architecture are you using (go env)?

set GOARCH=386
set GOBIN=
set GOEXE=.exe
set GOHOSTARCH=386
set GOHOSTOS=windows
set GOOS=windows
set GOPATH=D:\Users\X\go
set GORACE=
set GOROOT=C:\Go
set GOTOOLDIR=C:\Go\pkg\tool\windows_386
set GCCGO=gccgo
set GO386=
set CC=gcc
set GOGCCFLAGS=-m32 -mthreads -fmessage-length=0
set CXX=g++
set CGO_ENABLED=1
set PKG_CONFIG=pkg-config
set CGO_CFLAGS=-g -O2
set CGO_CPPFLAGS=
set CGO_CXXFLAGS=-g -O2
set CGO_FFLAGS=-g -O2
set CGO_LDFLAGS=-g -O2

What did you do?

go tool objump xxx.exe > xxx.s

a.go:3	0x442db0	648b0d14000000	FS MOVL FS:0x14(IP), CX	 ----------this line is not correct,   	(IP) is not need.
a.go:3	0x442db7	8b8900000000	MOVL 0(CX), CX				
a.go:3	0x442dbd	3b6108		CMPL 0x8(CX), SP			
a.go:3	0x442dc0	7612		JBE 0x442dd4				
a.go:3	0x442dc2	8b442404	MOVL 0x4(SP), AX			
a.go:3	0x442dc6	8b4c2408	MOVL 0x8(SP), CX			
a.go:3	0x442dca	39c8		CMPL CX, AX				
a.go:3	0x442dcc	0f9cc0		SETL AL					
a.go:3	0x442dcf	8844240c	MOVB AL, 0xc(SP)			
a.go:3	0x442dd3	c3		RET					
a.go:3	0x442dd4	e867bbffff	CALL runtime.morestack_noctxt(SB)	
a.go:3	0x442dd9	ebd5		JMP main.less(SB)			

What did you expect to see?

What did you see instead?