diff options
| author | fanzha02 <fannie.zhang@arm.com> | 2020-05-08 10:51:29 +0800 |
|---|---|---|
| committer | fannie zhang <Fannie.Zhang@arm.com> | 2020-10-29 05:07:11 +0000 |
| commit | 15131caeaa83e57fd8bdf87dde2801443f5602db (patch) | |
| tree | 0a052c4bb4ee66b59a3e58e0b13934454e5c9d1c /src/cmd/compile/internal/s390x | |
| parent | 53efbdb12e056c5fd4e967f07c7e660377f7aba9 (diff) | |
| download | go-15131caeaa83e57fd8bdf87dde2801443f5602db.tar.gz go-15131caeaa83e57fd8bdf87dde2801443f5602db.zip | |
cmd/internal/obj/arm64: add CASx/CASPx instructions
This patch adds support for CASx and CASPx atomic instructions.
go syntax gnu syntax
CASD Rs, (Rn|RSP), Rt => cas Xs, Xt, (Xn|SP)
CASALW Rs, (Rn|RSP), Rt => casal Ws, Wt, (Xn|SP)
CASPD (Rs, Rs+1), (Rn|RSP), (Rt, Rt+1) => casp Xs, Xs+1, Xt, Xt+1, (Xn|SP)
CASPW (Rs, Rs+1), (Rn|RSP), (Rt, Rt+1) => casp Ws, Ws+1, Wt, Wt+1, (Xn|SP)
This patch changes the type of prog.RestArgs from "[]Addr" to
"[]struct{Addr, Pos}", Pos is a enum, indicating the position of
the operand.
This patch also adds test cases.
Change-Id: Ib971cfda7890b7aa895d17bab22dea326c7fcaa4
Reviewed-on: https://go-review.googlesource.com/c/go/+/233277
Trust: fannie zhang <Fannie.Zhang@arm.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Diffstat (limited to 'src/cmd/compile/internal/s390x')
| -rw-r--r-- | src/cmd/compile/internal/s390x/ssa.go | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/src/cmd/compile/internal/s390x/ssa.go b/src/cmd/compile/internal/s390x/ssa.go index e23b31f385..84b9f491e4 100644 --- a/src/cmd/compile/internal/s390x/ssa.go +++ b/src/cmd/compile/internal/s390x/ssa.go @@ -182,11 +182,11 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) { i := v.Aux.(s390x.RotateParams) p := s.Prog(v.Op.Asm()) p.From = obj.Addr{Type: obj.TYPE_CONST, Offset: int64(i.Start)} - p.RestArgs = []obj.Addr{ + p.SetRestArgs([]obj.Addr{ {Type: obj.TYPE_CONST, Offset: int64(i.End)}, {Type: obj.TYPE_CONST, Offset: int64(i.Amount)}, {Type: obj.TYPE_REG, Reg: r2}, - } + }) p.To = obj.Addr{Type: obj.TYPE_REG, Reg: r1} case ssa.OpS390XADD, ssa.OpS390XADDW, ssa.OpS390XSUB, ssa.OpS390XSUBW, @@ -913,7 +913,7 @@ func ssaGenBlock(s *gc.SSAGenState, b, next *ssa.Block) { p.From.Type = obj.TYPE_CONST p.From.Offset = int64(s390x.NotEqual & s390x.NotUnordered) // unordered is not possible p.Reg = s390x.REG_R3 - p.RestArgs = []obj.Addr{{Type: obj.TYPE_CONST, Offset: 0}} + p.SetFrom3(obj.Addr{Type: obj.TYPE_CONST, Offset: 0}) if b.Succs[0].Block() != next { s.Br(s390x.ABR, b.Succs[0].Block()) } @@ -956,17 +956,17 @@ func ssaGenBlock(s *gc.SSAGenState, b, next *ssa.Block) { p.From.Type = obj.TYPE_CONST p.From.Offset = int64(mask & s390x.NotUnordered) // unordered is not possible p.Reg = b.Controls[0].Reg() - p.RestArgs = []obj.Addr{{Type: obj.TYPE_REG, Reg: b.Controls[1].Reg()}} + p.SetFrom3(obj.Addr{Type: obj.TYPE_REG, Reg: b.Controls[1].Reg()}) case ssa.BlockS390XCGIJ, ssa.BlockS390XCIJ: p.From.Type = obj.TYPE_CONST p.From.Offset = int64(mask & s390x.NotUnordered) // unordered is not possible p.Reg = b.Controls[0].Reg() - p.RestArgs = []obj.Addr{{Type: obj.TYPE_CONST, Offset: int64(int8(b.AuxInt))}} + p.SetFrom3(obj.Addr{Type: obj.TYPE_CONST, Offset: int64(int8(b.AuxInt))}) case ssa.BlockS390XCLGIJ, ssa.BlockS390XCLIJ: p.From.Type = obj.TYPE_CONST p.From.Offset = int64(mask & s390x.NotUnordered) // unordered is not possible p.Reg = b.Controls[0].Reg() - p.RestArgs = []obj.Addr{{Type: obj.TYPE_CONST, Offset: int64(uint8(b.AuxInt))}} + p.SetFrom3(obj.Addr{Type: obj.TYPE_CONST, Offset: int64(uint8(b.AuxInt))}) default: b.Fatalf("branch not implemented: %s", b.LongString()) } |