From: Keith Randall Date: Wed, 18 Jun 2025 22:16:59 +0000 (-0700) Subject: cmd/compile: move loong64 over to new bounds check strategy X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=5216fd570ee99133f7893e9b5d06b8e98bd6061b;p=gostls13.git cmd/compile: move loong64 over to new bounds check strategy Change-Id: I5dec33d10d16a5d5c0dc7231cd1f764a6d1d7598 Reviewed-on: https://go-review.googlesource.com/c/go/+/682399 LUCI-TryBot-Result: Go LUCI Reviewed-by: abner chenc Reviewed-by: Keith Randall Reviewed-by: Michael Knyszek Reviewed-by: sophie zhao --- diff --git a/src/cmd/compile/internal/loong64/ssa.go b/src/cmd/compile/internal/loong64/ssa.go index a71a5c3e43..2d986a5ff4 100644 --- a/src/cmd/compile/internal/loong64/ssa.go +++ b/src/cmd/compile/internal/loong64/ssa.go @@ -16,6 +16,7 @@ import ( "cmd/compile/internal/types" "cmd/internal/obj" "cmd/internal/obj/loong64" + "internal/abi" ) // isFPreg reports whether r is an FP register. @@ -663,12 +664,92 @@ func ssaGenValue(s *ssagen.State, v *ssa.Value) { p.From.Type = obj.TYPE_CONST p.From.Offset = 0x1A - case ssa.OpLOONG64LoweredPanicBoundsA, ssa.OpLOONG64LoweredPanicBoundsB, ssa.OpLOONG64LoweredPanicBoundsC: - p := s.Prog(obj.ACALL) + case ssa.OpLOONG64LoweredPanicBoundsRR, ssa.OpLOONG64LoweredPanicBoundsRC, ssa.OpLOONG64LoweredPanicBoundsCR, ssa.OpLOONG64LoweredPanicBoundsCC: + // Compute the constant we put in the PCData entry for this call. + code, signed := ssa.BoundsKind(v.AuxInt).Code() + xIsReg := false + yIsReg := false + xVal := 0 + yVal := 0 + switch v.Op { + case ssa.OpLOONG64LoweredPanicBoundsRR: + xIsReg = true + xVal = int(v.Args[0].Reg() - loong64.REG_R4) + yIsReg = true + yVal = int(v.Args[1].Reg() - loong64.REG_R4) + case ssa.OpLOONG64LoweredPanicBoundsRC: + xIsReg = true + xVal = int(v.Args[0].Reg() - loong64.REG_R4) + c := v.Aux.(ssa.PanicBoundsC).C + if c >= 0 && c <= abi.BoundsMaxConst { + yVal = int(c) + } else { + // Move constant to a register + yIsReg = true + if yVal == xVal { + yVal = 1 + } + p := s.Prog(loong64.AMOVV) + p.From.Type = obj.TYPE_CONST + p.From.Offset = c + p.To.Type = obj.TYPE_REG + p.To.Reg = loong64.REG_R4 + int16(yVal) + } + case ssa.OpLOONG64LoweredPanicBoundsCR: + yIsReg = true + yVal := int(v.Args[0].Reg() - loong64.REG_R4) + c := v.Aux.(ssa.PanicBoundsC).C + if c >= 0 && c <= abi.BoundsMaxConst { + xVal = int(c) + } else { + // Move constant to a register + xIsReg = true + if xVal == yVal { + xVal = 1 + } + p := s.Prog(loong64.AMOVV) + p.From.Type = obj.TYPE_CONST + p.From.Offset = c + p.To.Type = obj.TYPE_REG + p.To.Reg = loong64.REG_R4 + int16(xVal) + } + case ssa.OpLOONG64LoweredPanicBoundsCC: + c := v.Aux.(ssa.PanicBoundsCC).Cx + if c >= 0 && c <= abi.BoundsMaxConst { + xVal = int(c) + } else { + // Move constant to a register + xIsReg = true + p := s.Prog(loong64.AMOVV) + p.From.Type = obj.TYPE_CONST + p.From.Offset = c + p.To.Type = obj.TYPE_REG + p.To.Reg = loong64.REG_R4 + int16(xVal) + } + c = v.Aux.(ssa.PanicBoundsCC).Cy + if c >= 0 && c <= abi.BoundsMaxConst { + yVal = int(c) + } else { + // Move constant to a register + yIsReg = true + yVal = 1 + p := s.Prog(loong64.AMOVV) + p.From.Type = obj.TYPE_CONST + p.From.Offset = c + p.To.Type = obj.TYPE_REG + p.To.Reg = loong64.REG_R4 + int16(yVal) + } + } + c := abi.BoundsEncode(code, signed, xIsReg, yIsReg, xVal, yVal) + + p := s.Prog(obj.APCDATA) + p.From.SetConst(abi.PCDATA_PanicBounds) + p.To.SetConst(int64(c)) + p = s.Prog(obj.ACALL) p.To.Type = obj.TYPE_MEM p.To.Name = obj.NAME_EXTERN - p.To.Sym = ssagen.BoundsCheckFunc[v.AuxInt] - s.UseArgs(16) // space used in callee args area by assembly stubs + p.To.Sym = ir.Syms.PanicBounds + case ssa.OpLOONG64LoweredAtomicLoad8, ssa.OpLOONG64LoweredAtomicLoad32, ssa.OpLOONG64LoweredAtomicLoad64: // MOVB (Rarg0), Rout // DBAR 0x14 diff --git a/src/cmd/compile/internal/ssa/_gen/LOONG64.rules b/src/cmd/compile/internal/ssa/_gen/LOONG64.rules index e81377d87d..3232af1e55 100644 --- a/src/cmd/compile/internal/ssa/_gen/LOONG64.rules +++ b/src/cmd/compile/internal/ssa/_gen/LOONG64.rules @@ -527,9 +527,11 @@ // Publication barrier as intrinsic (PubBarrier ...) => (LoweredPubBarrier ...) -(PanicBounds [kind] x y mem) && boundsABI(kind) == 0 => (LoweredPanicBoundsA [kind] x y mem) -(PanicBounds [kind] x y mem) && boundsABI(kind) == 1 => (LoweredPanicBoundsB [kind] x y mem) -(PanicBounds [kind] x y mem) && boundsABI(kind) == 2 => (LoweredPanicBoundsC [kind] x y mem) +(PanicBounds ...) => (LoweredPanicBoundsRR ...) +(LoweredPanicBoundsRR [kind] x (MOVVconst [c]) mem) => (LoweredPanicBoundsRC [kind] x {PanicBoundsC{C:c}} mem) +(LoweredPanicBoundsRR [kind] (MOVVconst [c]) y mem) => (LoweredPanicBoundsCR [kind] {PanicBoundsC{C:c}} y mem) +(LoweredPanicBoundsRC [kind] {p} (MOVVconst [c]) mem) => (LoweredPanicBoundsCC [kind] {PanicBoundsCC{Cx:c, Cy:p.C}} mem) +(LoweredPanicBoundsCR [kind] {p} (MOVVconst [c]) mem) => (LoweredPanicBoundsCC [kind] {PanicBoundsCC{Cx:p.C, Cy:c}} mem) (CondSelect x y cond) => (OR (MASKEQZ x cond) (MASKNEZ y cond)) diff --git a/src/cmd/compile/internal/ssa/_gen/LOONG64Ops.go b/src/cmd/compile/internal/ssa/_gen/LOONG64Ops.go index 5ef304b4f9..0e204c4a3c 100644 --- a/src/cmd/compile/internal/ssa/_gen/LOONG64Ops.go +++ b/src/cmd/compile/internal/ssa/_gen/LOONG64Ops.go @@ -130,10 +130,7 @@ func init() { gpspsbg = gpspg | buildReg("SB") fp = buildReg("F0 F1 F2 F3 F4 F5 F6 F7 F8 F9 F10 F11 F12 F13 F14 F15 F16 F17 F18 F19 F20 F21 F22 F23 F24 F25 F26 F27 F28 F29 F30 F31") callerSave = gp | fp | buildReg("g") // runtime.setg (and anything calling it) may clobber g - r1 = buildReg("R20") - r2 = buildReg("R21") - r3 = buildReg("R23") - r4 = buildReg("R24") + first16 = buildReg("R4 R5 R6 R7 R8 R9 R10 R11 R12 R13 R14 R15 R16 R17 R18 R19") ) // Common regInfo var ( @@ -563,12 +560,15 @@ func init() { // Do data barrier. arg0=memorys {name: "LoweredPubBarrier", argLength: 1, asm: "DBAR", hasSideEffects: true}, - // There are three of these functions so that they can have three different register inputs. - // When we check 0 <= c <= cap (A), then 0 <= b <= c (B), then 0 <= a <= b (C), we want the - // default registers to match so we don't need to copy registers around unnecessarily. - {name: "LoweredPanicBoundsA", argLength: 3, aux: "Int64", reg: regInfo{inputs: []regMask{r3, r4}}, typ: "Mem", call: true}, // arg0=idx, arg1=len, arg2=mem, returns memory. AuxInt contains report code (see PanicBounds in genericOps.go). - {name: "LoweredPanicBoundsB", argLength: 3, aux: "Int64", reg: regInfo{inputs: []regMask{r2, r3}}, typ: "Mem", call: true}, // arg0=idx, arg1=len, arg2=mem, returns memory. AuxInt contains report code (see PanicBounds in genericOps.go). - {name: "LoweredPanicBoundsC", argLength: 3, aux: "Int64", reg: regInfo{inputs: []regMask{r1, r2}}, typ: "Mem", call: true}, // arg0=idx, arg1=len, arg2=mem, returns memory. AuxInt contains report code (see PanicBounds in genericOps.go). + // LoweredPanicBoundsRR takes x and y, two values that caused a bounds check to fail. + // the RC and CR versions are used when one of the arguments is a constant. CC is used + // when both are constant (normally both 0, as prove derives the fact that a [0] bounds + // failure means the length must have also been 0). + // AuxInt contains a report code (see PanicBounds in genericOps.go). + {name: "LoweredPanicBoundsRR", argLength: 3, aux: "Int64", reg: regInfo{inputs: []regMask{first16, first16}}, typ: "Mem", call: true}, // arg0=x, arg1=y, arg2=mem, returns memory. + {name: "LoweredPanicBoundsRC", argLength: 2, aux: "PanicBoundsC", reg: regInfo{inputs: []regMask{first16}}, typ: "Mem", call: true}, // arg0=x, arg1=mem, returns memory. + {name: "LoweredPanicBoundsCR", argLength: 2, aux: "PanicBoundsC", reg: regInfo{inputs: []regMask{first16}}, typ: "Mem", call: true}, // arg0=y, arg1=mem, returns memory. + {name: "LoweredPanicBoundsCC", argLength: 1, aux: "PanicBoundsCC", reg: regInfo{}, typ: "Mem", call: true}, // arg0=mem, returns memory. // Prefetch instruction // Do prefetch arg0 address with option aux. arg0=addr, arg1=memory, aux=option. diff --git a/src/cmd/compile/internal/ssa/opGen.go b/src/cmd/compile/internal/ssa/opGen.go index 18c1c15a5b..2aa974cdcd 100644 --- a/src/cmd/compile/internal/ssa/opGen.go +++ b/src/cmd/compile/internal/ssa/opGen.go @@ -1963,9 +1963,10 @@ const ( OpLOONG64LoweredGetCallerPC OpLOONG64LoweredWB OpLOONG64LoweredPubBarrier - OpLOONG64LoweredPanicBoundsA - OpLOONG64LoweredPanicBoundsB - OpLOONG64LoweredPanicBoundsC + OpLOONG64LoweredPanicBoundsRR + OpLOONG64LoweredPanicBoundsRC + OpLOONG64LoweredPanicBoundsCR + OpLOONG64LoweredPanicBoundsCC OpLOONG64PRELD OpLOONG64PRELDX @@ -26439,41 +26440,46 @@ var opcodeTable = [...]opInfo{ reg: regInfo{}, }, { - name: "LoweredPanicBoundsA", + name: "LoweredPanicBoundsRR", auxType: auxInt64, argLen: 3, call: true, reg: regInfo{ inputs: []inputInfo{ - {0, 4194304}, // R23 - {1, 8388608}, // R24 + {0, 524280}, // R4 R5 R6 R7 R8 R9 R10 R11 R12 R13 R14 R15 R16 R17 R18 R19 + {1, 524280}, // R4 R5 R6 R7 R8 R9 R10 R11 R12 R13 R14 R15 R16 R17 R18 R19 }, }, }, { - name: "LoweredPanicBoundsB", - auxType: auxInt64, - argLen: 3, + name: "LoweredPanicBoundsRC", + auxType: auxPanicBoundsC, + argLen: 2, call: true, reg: regInfo{ inputs: []inputInfo{ - {0, 1048576}, // R21 - {1, 4194304}, // R23 + {0, 524280}, // R4 R5 R6 R7 R8 R9 R10 R11 R12 R13 R14 R15 R16 R17 R18 R19 }, }, }, { - name: "LoweredPanicBoundsC", - auxType: auxInt64, - argLen: 3, + name: "LoweredPanicBoundsCR", + auxType: auxPanicBoundsC, + argLen: 2, call: true, reg: regInfo{ inputs: []inputInfo{ - {0, 524288}, // R20 - {1, 1048576}, // R21 + {0, 524280}, // R4 R5 R6 R7 R8 R9 R10 R11 R12 R13 R14 R15 R16 R17 R18 R19 }, }, }, + { + name: "LoweredPanicBoundsCC", + auxType: auxPanicBoundsCC, + argLen: 1, + call: true, + reg: regInfo{}, + }, { name: "PRELD", auxType: auxInt64, diff --git a/src/cmd/compile/internal/ssa/rewriteLOONG64.go b/src/cmd/compile/internal/ssa/rewriteLOONG64.go index 8599725b90..568f906a07 100644 --- a/src/cmd/compile/internal/ssa/rewriteLOONG64.go +++ b/src/cmd/compile/internal/ssa/rewriteLOONG64.go @@ -330,6 +330,12 @@ func rewriteValueLOONG64(v *Value) bool { return rewriteValueLOONG64_OpLOONG64DIVV(v) case OpLOONG64DIVVU: return rewriteValueLOONG64_OpLOONG64DIVVU(v) + case OpLOONG64LoweredPanicBoundsCR: + return rewriteValueLOONG64_OpLOONG64LoweredPanicBoundsCR(v) + case OpLOONG64LoweredPanicBoundsRC: + return rewriteValueLOONG64_OpLOONG64LoweredPanicBoundsRC(v) + case OpLOONG64LoweredPanicBoundsRR: + return rewriteValueLOONG64_OpLOONG64LoweredPanicBoundsRR(v) case OpLOONG64MASKEQZ: return rewriteValueLOONG64_OpLOONG64MASKEQZ(v) case OpLOONG64MASKNEZ: @@ -669,7 +675,8 @@ func rewriteValueLOONG64(v *Value) bool { v.Op = OpLOONG64OR return true case OpPanicBounds: - return rewriteValueLOONG64_OpPanicBounds(v) + v.Op = OpLOONG64LoweredPanicBoundsRR + return true case OpPopCount16: return rewriteValueLOONG64_OpPopCount16(v) case OpPopCount32: @@ -2070,6 +2077,86 @@ func rewriteValueLOONG64_OpLOONG64DIVVU(v *Value) bool { } return false } +func rewriteValueLOONG64_OpLOONG64LoweredPanicBoundsCR(v *Value) bool { + v_1 := v.Args[1] + v_0 := v.Args[0] + // match: (LoweredPanicBoundsCR [kind] {p} (MOVVconst [c]) mem) + // result: (LoweredPanicBoundsCC [kind] {PanicBoundsCC{Cx:p.C, Cy:c}} mem) + for { + kind := auxIntToInt64(v.AuxInt) + p := auxToPanicBoundsC(v.Aux) + if v_0.Op != OpLOONG64MOVVconst { + break + } + c := auxIntToInt64(v_0.AuxInt) + mem := v_1 + v.reset(OpLOONG64LoweredPanicBoundsCC) + v.AuxInt = int64ToAuxInt(kind) + v.Aux = panicBoundsCCToAux(PanicBoundsCC{Cx: p.C, Cy: c}) + v.AddArg(mem) + return true + } + return false +} +func rewriteValueLOONG64_OpLOONG64LoweredPanicBoundsRC(v *Value) bool { + v_1 := v.Args[1] + v_0 := v.Args[0] + // match: (LoweredPanicBoundsRC [kind] {p} (MOVVconst [c]) mem) + // result: (LoweredPanicBoundsCC [kind] {PanicBoundsCC{Cx:c, Cy:p.C}} mem) + for { + kind := auxIntToInt64(v.AuxInt) + p := auxToPanicBoundsC(v.Aux) + if v_0.Op != OpLOONG64MOVVconst { + break + } + c := auxIntToInt64(v_0.AuxInt) + mem := v_1 + v.reset(OpLOONG64LoweredPanicBoundsCC) + v.AuxInt = int64ToAuxInt(kind) + v.Aux = panicBoundsCCToAux(PanicBoundsCC{Cx: c, Cy: p.C}) + v.AddArg(mem) + return true + } + return false +} +func rewriteValueLOONG64_OpLOONG64LoweredPanicBoundsRR(v *Value) bool { + v_2 := v.Args[2] + v_1 := v.Args[1] + v_0 := v.Args[0] + // match: (LoweredPanicBoundsRR [kind] x (MOVVconst [c]) mem) + // result: (LoweredPanicBoundsRC [kind] x {PanicBoundsC{C:c}} mem) + for { + kind := auxIntToInt64(v.AuxInt) + x := v_0 + if v_1.Op != OpLOONG64MOVVconst { + break + } + c := auxIntToInt64(v_1.AuxInt) + mem := v_2 + v.reset(OpLOONG64LoweredPanicBoundsRC) + v.AuxInt = int64ToAuxInt(kind) + v.Aux = panicBoundsCToAux(PanicBoundsC{C: c}) + v.AddArg2(x, mem) + return true + } + // match: (LoweredPanicBoundsRR [kind] (MOVVconst [c]) y mem) + // result: (LoweredPanicBoundsCR [kind] {PanicBoundsC{C:c}} y mem) + for { + kind := auxIntToInt64(v.AuxInt) + if v_0.Op != OpLOONG64MOVVconst { + break + } + c := auxIntToInt64(v_0.AuxInt) + y := v_1 + mem := v_2 + v.reset(OpLOONG64LoweredPanicBoundsCR) + v.AuxInt = int64ToAuxInt(kind) + v.Aux = panicBoundsCToAux(PanicBoundsC{C: c}) + v.AddArg2(y, mem) + return true + } + return false +} func rewriteValueLOONG64_OpLOONG64MASKEQZ(v *Value) bool { v_1 := v.Args[1] v_0 := v.Args[0] @@ -9106,60 +9193,6 @@ func rewriteValueLOONG64_OpOffPtr(v *Value) bool { return true } } -func rewriteValueLOONG64_OpPanicBounds(v *Value) bool { - v_2 := v.Args[2] - v_1 := v.Args[1] - v_0 := v.Args[0] - // match: (PanicBounds [kind] x y mem) - // cond: boundsABI(kind) == 0 - // result: (LoweredPanicBoundsA [kind] x y mem) - for { - kind := auxIntToInt64(v.AuxInt) - x := v_0 - y := v_1 - mem := v_2 - if !(boundsABI(kind) == 0) { - break - } - v.reset(OpLOONG64LoweredPanicBoundsA) - v.AuxInt = int64ToAuxInt(kind) - v.AddArg3(x, y, mem) - return true - } - // match: (PanicBounds [kind] x y mem) - // cond: boundsABI(kind) == 1 - // result: (LoweredPanicBoundsB [kind] x y mem) - for { - kind := auxIntToInt64(v.AuxInt) - x := v_0 - y := v_1 - mem := v_2 - if !(boundsABI(kind) == 1) { - break - } - v.reset(OpLOONG64LoweredPanicBoundsB) - v.AuxInt = int64ToAuxInt(kind) - v.AddArg3(x, y, mem) - return true - } - // match: (PanicBounds [kind] x y mem) - // cond: boundsABI(kind) == 2 - // result: (LoweredPanicBoundsC [kind] x y mem) - for { - kind := auxIntToInt64(v.AuxInt) - x := v_0 - y := v_1 - mem := v_2 - if !(boundsABI(kind) == 2) { - break - } - v.reset(OpLOONG64LoweredPanicBoundsC) - v.AuxInt = int64ToAuxInt(kind) - v.AddArg3(x, y, mem) - return true - } - return false -} func rewriteValueLOONG64_OpPopCount16(v *Value) bool { v_0 := v.Args[0] b := v.Block diff --git a/src/runtime/asm_loong64.s b/src/runtime/asm_loong64.s index e3b593961a..46ef00bab8 100644 --- a/src/runtime/asm_loong64.s +++ b/src/runtime/asm_loong64.s @@ -1135,76 +1135,29 @@ TEXT runtime·debugCallPanicked(SB),NOSPLIT,$16-16 BREAK RET -// Note: these functions use a special calling convention to save generated code space. -// Arguments are passed in registers, but the space for those arguments are allocated -// in the caller's stack frame. These stubs write the args into that stack space and -// then tail call to the corresponding runtime handler. -// The tail call makes these stubs disappear in backtraces. -TEXT runtime·panicIndex(SB),NOSPLIT,$0-16 - MOVV R20, R4 - MOVV R21, R5 - JMP runtime·goPanicIndex(SB) -TEXT runtime·panicIndexU(SB),NOSPLIT,$0-16 - MOVV R20, R4 - MOVV R21, R5 - JMP runtime·goPanicIndexU(SB) -TEXT runtime·panicSliceAlen(SB),NOSPLIT,$0-16 - MOVV R21, R4 - MOVV R23, R5 - JMP runtime·goPanicSliceAlen(SB) -TEXT runtime·panicSliceAlenU(SB),NOSPLIT,$0-16 - MOVV R21, R4 - MOVV R23, R5 - JMP runtime·goPanicSliceAlenU(SB) -TEXT runtime·panicSliceAcap(SB),NOSPLIT,$0-16 - MOVV R21, R4 - MOVV R23, R5 - JMP runtime·goPanicSliceAcap(SB) -TEXT runtime·panicSliceAcapU(SB),NOSPLIT,$0-16 - MOVV R21, R4 - MOVV R23, R5 - JMP runtime·goPanicSliceAcapU(SB) -TEXT runtime·panicSliceB(SB),NOSPLIT,$0-16 - MOVV R20, R4 - MOVV R21, R5 - JMP runtime·goPanicSliceB(SB) -TEXT runtime·panicSliceBU(SB),NOSPLIT,$0-16 - MOVV R20, R4 - MOVV R21, R5 - JMP runtime·goPanicSliceBU(SB) -TEXT runtime·panicSlice3Alen(SB),NOSPLIT,$0-16 - MOVV R23, R4 - MOVV R24, R5 - JMP runtime·goPanicSlice3Alen(SB) -TEXT runtime·panicSlice3AlenU(SB),NOSPLIT,$0-16 - MOVV R23, R4 - MOVV R24, R5 - JMP runtime·goPanicSlice3AlenU(SB) -TEXT runtime·panicSlice3Acap(SB),NOSPLIT,$0-16 - MOVV R23, R4 - MOVV R24, R5 - JMP runtime·goPanicSlice3Acap(SB) -TEXT runtime·panicSlice3AcapU(SB),NOSPLIT,$0-16 - MOVV R23, R4 - MOVV R24, R5 - JMP runtime·goPanicSlice3AcapU(SB) -TEXT runtime·panicSlice3B(SB),NOSPLIT,$0-16 - MOVV R21, R4 - MOVV R23, R5 - JMP runtime·goPanicSlice3B(SB) -TEXT runtime·panicSlice3BU(SB),NOSPLIT,$0-16 - MOVV R21, R4 - MOVV R23, R5 - JMP runtime·goPanicSlice3BU(SB) -TEXT runtime·panicSlice3C(SB),NOSPLIT,$0-16 - MOVV R20, R4 - MOVV R21, R5 - JMP runtime·goPanicSlice3C(SB) -TEXT runtime·panicSlice3CU(SB),NOSPLIT,$0-16 - MOVV R20, R4 - MOVV R21, R5 - JMP runtime·goPanicSlice3CU(SB) -TEXT runtime·panicSliceConvert(SB),NOSPLIT,$0-16 - MOVV R23, R4 - MOVV R24, R5 - JMP runtime·goPanicSliceConvert(SB) +TEXT runtime·panicBounds(SB),NOSPLIT,$144-0 + NO_LOCAL_POINTERS + // Save all 16 int registers that could have an index in them. + // They may be pointers, but if they are they are dead. + // Skip R0 aka ZERO, R1 aka LR, R2 aka thread pointer, R3 aka SP. + MOVV R4, 24(R3) + MOVV R5, 32(R3) + MOVV R6, 40(R3) + MOVV R7, 48(R3) + MOVV R8, 56(R3) + MOVV R9, 64(R3) + MOVV R10, 72(R3) + MOVV R11, 80(R3) + MOVV R12, 88(R3) + MOVV R13, 96(R3) + MOVV R14, 104(R3) + MOVV R15, 112(R3) + MOVV R16, 120(R3) + MOVV R17, 128(R3) + MOVV R18, 136(R3) + MOVV R19, 144(R3) + + MOVV R1, R4 // PC immediately after call to panicBounds + ADDV $24, R3, R5 // pointer to save area + CALL runtime·panicBounds64(SB) + RET