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cmd/compile: delete lots of the legacy backend

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It's not everything, but it is a good start.

I tried to make the CL delete only.  goimports forced
a few exceptions to that rule.

Update #16357

Change-Id: I041925cb2fe68bb7ae1617af862b22c48da649c1
Reviewed-on: https://go-review.googlesource.com/29168
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
Reviewed-by: Martin Möhrmann <martisch@uos.de>
This commit is contained in:
Keith Randall 2016-09-14 14:02:50 -07:00
parent 3134ab3c2d
commit e7cc9c4f4d
53 changed files with 10 additions and 30033 deletions
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67
src/cmd/compile/internal/gc/go.go
View file

@ -368,68 +368,11 @@ type Arch struct {
MAXWIDTH int64
ReservedRegs []int
AddIndex func(*Node, int64, *Node) bool // optional
Betypeinit func()
Bgen_float func(*Node, bool, int, *obj.Prog) // optional
Cgen64 func(*Node, *Node) // only on 32-bit systems
Cgenindex func(*Node, *Node, bool) *obj.Prog
Cgen_bmul func(Op, *Node, *Node, *Node) bool
Cgen_float func(*Node, *Node) // optional
Cgen_hmul func(*Node, *Node, *Node)
RightShiftWithCarry func(*Node, uint, *Node) // only on systems without RROTC instruction
AddSetCarry func(*Node, *Node, *Node) // only on systems when ADD does not update carry flag
Cgen_shift func(Op, bool, *Node, *Node, *Node)
Clearfat func(*Node)
Cmp64 func(*Node, *Node, Op, int, *obj.Prog) // only on 32-bit systems
Defframe func(*obj.Prog)
Dodiv func(Op, *Node, *Node, *Node)
Excise func(*Flow)
Expandchecks func(*obj.Prog)
Getg func(*Node)
Gins func(obj.As, *Node, *Node) *obj.Prog
// Ginscmp generates code comparing n1 to n2 and jumping away if op is satisfied.
// The returned prog should be Patch'ed with the jump target.
// If op is not satisfied, code falls through to the next emitted instruction.
// Likely is the branch prediction hint: +1 for likely, -1 for unlikely, 0 for no opinion.
//
// Ginscmp must be able to handle all kinds of arguments for n1 and n2,
// not just simple registers, although it can assume that there are no
// function calls needed during the evaluation, and on 32-bit systems
// the values are guaranteed not to be 64-bit values, so no in-memory
// temporaries are necessary.
Ginscmp func(op Op, t *Type, n1, n2 *Node, likely int) *obj.Prog
// Ginsboolval inserts instructions to convert the result
// of a just-completed comparison to a boolean value.
// The first argument is the conditional jump instruction
// corresponding to the desired value.
// The second argument is the destination.
// If not present, Ginsboolval will be emulated with jumps.
Ginsboolval func(obj.As, *Node)
Ginscon func(obj.As, int64, *Node)
Ginsnop func()
Gmove func(*Node, *Node)
Igenindex func(*Node, *Node, bool) *obj.Prog
Peep func(*obj.Prog)
Proginfo func(*obj.Prog) // fills in Prog.Info
Regtyp func(*obj.Addr) bool
Sameaddr func(*obj.Addr, *obj.Addr) bool
Smallindir func(*obj.Addr, *obj.Addr) bool
Stackaddr func(*obj.Addr) bool
Blockcopy func(*Node, *Node, int64, int64, int64)
Sudoaddable func(obj.As, *Node, *obj.Addr) bool
Sudoclean func()
Excludedregs func() uint64
RtoB func(int) uint64
FtoB func(int) uint64
BtoR func(uint64) int
BtoF func(uint64) int
Optoas func(Op, *Type) obj.As
Doregbits func(int) uint64
Regnames func(*int) []string
Use387 bool // should 8g use 387 FP instructions instead of sse2.
Betypeinit func()
Defframe func(*obj.Prog)
Gins func(obj.As, *Node, *Node) *obj.Prog
Proginfo func(*obj.Prog) // fills in Prog.Info
Use387 bool // should 8g use 387 FP instructions instead of sse2.
// SSARegToReg maps ssa register numbers to obj register numbers.
SSARegToReg []int16