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cmd/compile/internal/gc: remove more backend Sym uses

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Removes all external uses of Linksym and Pkglookup, which are the only
two exported functions that return Syms.

Also add Duffcopy and Duffzero since they're used often enough across
SSA backends.

Passes toolstash -cmp.

Change-Id: I8d3fd048ad5cd676fc46378f09a917569ffc9b2c
Reviewed-on: https://go-review.googlesource.com/36418
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
This commit is contained in:
Matthew Dempsky 2017-02-06 14:46:48 -08:00
parent ab067cde34
commit 6a29440dcc
15 changed files with 44 additions and 35 deletions
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4
src/cmd/compile/internal/arm/ssa.go
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@ -689,13 +689,13 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
p := gc.Prog(obj.ADUFFZERO)
p.To.Type = obj.TYPE_MEM
p.To.Name = obj.NAME_EXTERN
p.To.Sym = gc.Linksym(gc.Pkglookup("duffzero", gc.Runtimepkg))
p.To.Sym = gc.Duffzero
p.To.Offset = v.AuxInt
case ssa.OpARMDUFFCOPY:
p := gc.Prog(obj.ADUFFCOPY)
p.To.Type = obj.TYPE_MEM
p.To.Name = obj.NAME_EXTERN
p.To.Sym = gc.Linksym(gc.Pkglookup("duffcopy", gc.Runtimepkg))
p.To.Sym = gc.Duffcopy
p.To.Offset = v.AuxInt
case ssa.OpARMLoweredNilCheck:
// Issue a load which will fault if arg is nil.