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cmd/compile: add softfloat support to mips64{,le}

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mips64 softfloat support is based on mips implementation and introduces
new enviroment variable GOMIPS64.

GOMIPS64 is a GOARCH=mips64{,le} specific option, for a choice between
hard-float and soft-float. Valid values are 'hardfloat' (default) and
'softfloat'. It is passed to the assembler as
'GOMIPS64_{hardfloat,softfloat}'.

Change-Id: I7f73078627f7cb37c588a38fb5c997fe09c56134
Reviewed-on: https://go-review.googlesource.com/108475
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This commit is contained in:
Milan Knezevic
2018-04-26 15:37:27 +02:00
committed by Cherry Zhang
parent 62adf6fc2d
commit 2959128dc5
14 changed files with 84 additions and 15 deletions
doc
asm.html
src
cmd
compile
internal
mips64
galign.go
dist
build.gobuildruntime.go
go
alldocs.go
internal
cfg
cfg.go
envcmd
env.go
help
helpdoc.go
work
gc.go
internal
objabi
util.go
runtime
cgo
asm_mips64x.sgcc_mips64x.S
test
codegen
math.go
run.go

3
test/codegen/math.go

@ -40,7 +40,8 @@ func sqrt(x float64) float64 {
// 386/387:"FSQRT" 386/sse2:"SQRTSD"
// arm64:"FSQRTD"
// arm/7:"SQRTD"
// mips/hardfloat:"SQRTD" mips64:"SQRTD"
// mips/hardfloat:"SQRTD" mips/softfloat:-"SQRTD"
// mips64/hardfloat:"SQRTD" mips64/softfloat:-"SQRTD"
return math.Sqrt(x)
}