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cmd/compile: remove Node.Ntest, Node.Stkdelta

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$ sizeof -p cmd/compile/internal/gc Node
Node 272
$

Change-Id: I3d9b67eebfc0be0a4b9768d3de3dc76300abd89c
Reviewed-on: https://go-review.googlesource.com/10521
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
This commit is contained in:
Russ Cox 2015-05-26 21:30:20 -04:00
parent ffef180f82
commit 66be1481df
20 changed files with 207 additions and 269 deletions
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11
src/cmd/compile/internal/gc/pgen.go
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@ -216,6 +216,11 @@ func cmpstackvar(a *Node, b *Node) int {
return stringsCompare(a.Sym.Name, b.Sym.Name)
}
// stkdelta records the stack offset delta for a node
// during the compaction of the stack frame to remove
// unused stack slots.
var stkdelta = map[*Node]int64{}
// TODO(lvd) find out where the PAUTO/OLITERAL nodes come from.
func allocauto(ptxt *obj.Prog) {
Stksize = 0
@ -283,7 +288,7 @@ func allocauto(ptxt *obj.Prog) {
Yyerror("stack frame too large (>2GB)")
}
n.Stkdelta = -Stksize - n.Xoffset
stkdelta[n] = -Stksize - n.Xoffset
}
Stksize = Rnd(Stksize, int64(Widthreg))
@ -296,8 +301,8 @@ func allocauto(ptxt *obj.Prog) {
if ll.N.Class != PAUTO || ll.N.Op != ONAME {
continue
}
ll.N.Xoffset += ll.N.Stkdelta
ll.N.Stkdelta = 0
ll.N.Xoffset += stkdelta[ll.N]
delete(stkdelta, ll.N)
}
}