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[dev.typeparams] cmd/compile: define ARM64 parameter registers
Define the registers. They are not really enabled for now. Otherwise the compiler will start using them for go:registerparams functions and it is not fully working. Some test will fail. Now we can compile a simple Add function with registerparams (with registers enabled). Change-Id: Ifdfac931052c0196096a1dd8b0687b5fdedb14d5 Reviewed-on: https://go-review.googlesource.com/c/go/+/322850 Trust: Cherry Mui <cherryyz@google.com> Reviewed-by: David Chase <drchase@google.com> Reviewed-by: Than McIntosh <thanm@google.com>
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@ -161,6 +161,9 @@ func ssaGenValue(s *ssagen.State, v *ssa.Value) {
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p.From.Type = obj.TYPE_REG
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p.From.Reg = v.Args[0].Reg()
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ssagen.AddrAuto(&p.To, v)
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case ssa.OpArgIntReg, ssa.OpArgFloatReg:
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// TODO: generate morestack spill code
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ssagen.CheckArgReg(v)
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case ssa.OpARM64ADD,
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ssa.OpARM64SUB,
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ssa.OpARM64AND,
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@ -228,6 +228,10 @@ func NewConfig(arch string, types Types, ctxt *obj.Link, optimize bool) *Config
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c.registers = registersARM64[:]
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c.gpRegMask = gpRegMaskARM64
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c.fpRegMask = fpRegMaskARM64
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// XXX commented out for now. Uncomment it will enable register args for
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// go:registerparams functions, which isn't fully working, so tests fail.
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//c.intParamRegs = paramIntRegARM64
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//c.floatParamRegs = paramFloatRegARM64
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c.FPReg = framepointerRegARM64
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c.LinkReg = linkRegARM64
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c.hasGReg = true
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@ -765,6 +765,8 @@ func init() {
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ops: ops,
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blocks: blocks,
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regnames: regNamesARM64,
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ParamIntRegNames: "R0 R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 R11 R12 R13 R14 R15",
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ParamFloatRegNames: "F0 F1 F2 F3 F4 F5 F6 F7 F8 F9 F10 F11 F12 F13 F14 F15",
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gpregmask: gp,
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fpregmask: fp,
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framepointerreg: -1, // not used
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@ -36400,8 +36400,8 @@ var registersARM64 = [...]Register{
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{62, arm64.REG_F31, -1, "F31"},
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{63, 0, -1, "SB"},
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}
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var paramIntRegARM64 = []int8(nil)
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var paramFloatRegARM64 = []int8(nil)
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var paramIntRegARM64 = []int8{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}
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var paramFloatRegARM64 = []int8{31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46}
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var gpRegMaskARM64 = regMask(670826495)
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var fpRegMaskARM64 = regMask(9223372034707292160)
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var specialRegMaskARM64 = regMask(0)
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