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cmd/compile: remove OREGISTER, Node.Reg

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OREGISTER is unused.

All remaining uses of Node.Reg use REGSP.

Change-Id: I51cf06826867e576baabd568e04f96d2634f5cad
Reviewed-on: https://go-review.googlesource.com/31856
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
This commit is contained in:
Josh Bleecher Snyder 2016-10-24 14:33:22 -07:00
parent 28269796c8
commit 1fcad29341
10 changed files with 18 additions and 44 deletions
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10
src/cmd/compile/internal/gc/syntax.go
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@ -35,7 +35,7 @@ type Node struct {
// Various. Usually an offset into a struct. For example:
// - ONAME nodes that refer to local variables use it to identify their stack frame position.
// - ODOT, ODOTPTR, and OINDREG use it to indicate offset relative to their base address.
// - ODOT, ODOTPTR, and OINDREGSP use it to indicate offset relative to their base address.
// - OSTRUCTKEY uses it to store the named field's offset.
// - OXCASE and OXFALL use it to validate the use of fallthrough.
// Possibly still more uses. If you find any, document them.
@ -43,9 +43,6 @@ type Node struct {
Lineno int32
// OREGISTER, OINDREG
Reg int16
Esc uint16 // EscXXX
Op Op
@ -472,10 +469,7 @@ const (
OCHECKNIL // emit code to ensure pointer/interface not nil
OVARKILL // variable is dead
OVARLIVE // variable is alive
// thearch-specific registers
OREGISTER // a register, such as AX.
OINDREG // offset plus indirect of a register, such as 8(SP).
OINDREGSP // offset plus indirect of REGSP, such as 8(SP).
// arch-specific opcodes
OCMP // compare: ACMP.