cmd/compile: intrinsify runtime.getcallerpc on all link register architectures

Add a compiler intrinsic for getcallerpc on following architectures:
  arm
  mips mipsle mips64 mips64le
  ppc64 ppc64le
  s390x

Change-Id: I758f3d4742fc214b206bcd07d90408622c17dbef
Reviewed-on: https://go-review.googlesource.com/110835
Run-TryBot: Wei Xiao <Wei.Xiao@arm.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>

src/cmd/compile/internal/arm/ssa.go

@@ -797,6 +797,10 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
 		p.From.Name = obj.NAME_PARAM
 		p.To.Type = obj.TYPE_REG
 		p.To.Reg = v.Reg()
+	case ssa.OpARMLoweredGetCallerPC:
+		p := s.Prog(obj.AGETCALLERPC)
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = v.Reg()
 	case ssa.OpARMFlagEQ,
 		ssa.OpARMFlagLT_ULT,
 		ssa.OpARMFlagLT_UGT,

src/cmd/compile/internal/gc/ssa.go

@@ -2830,10 +2830,11 @@ func init() {
 		},
 		all...)
 
-	addF("runtime", "getcallerpc",
+	add("runtime", "getcallerpc",
 		func(s *state, n *Node, args []*ssa.Value) *ssa.Value {
 			return s.newValue0(ssa.OpGetCallerPC, s.f.Config.Types.Uintptr)
-		}, sys.AMD64, sys.I386, sys.ARM64)
+		},
+		all...)
 
 	add("runtime", "getcallersp",
 		func(s *state, n *Node, args []*ssa.Value) *ssa.Value {

src/cmd/compile/internal/mips/ssa.go

@@ -768,6 +768,10 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
 		p.From.Name = obj.NAME_PARAM
 		p.To.Type = obj.TYPE_REG
 		p.To.Reg = v.Reg()
+	case ssa.OpMIPSLoweredGetCallerPC:
+		p := s.Prog(obj.AGETCALLERPC)
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = v.Reg()
 	case ssa.OpClobber:
 		// TODO: implement for clobberdead experiment. Nop is ok for now.
 	default:

src/cmd/compile/internal/mips64/ssa.go

@@ -739,6 +739,10 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
 		p.From.Name = obj.NAME_PARAM
 		p.To.Type = obj.TYPE_REG
 		p.To.Reg = v.Reg()
+	case ssa.OpMIPS64LoweredGetCallerPC:
+		p := s.Prog(obj.AGETCALLERPC)
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = v.Reg()
 	case ssa.OpClobber:
 		// TODO: implement for clobberdead experiment. Nop is ok for now.
 	default:

src/cmd/compile/internal/ppc64/ssa.go

@@ -431,6 +431,11 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
 		p.To.Type = obj.TYPE_REG
 		p.To.Reg = v.Reg()
 
+	case ssa.OpPPC64LoweredGetCallerPC:
+		p := s.Prog(obj.AGETCALLERPC)
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = v.Reg()
+
 	case ssa.OpPPC64LoweredRound32F, ssa.OpPPC64LoweredRound64F:
 		// input is already rounded
 

src/cmd/compile/internal/s390x/ssa.go

@@ -509,6 +509,10 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
 		p.From.Name = obj.NAME_PARAM
 		p.To.Type = obj.TYPE_REG
 		p.To.Reg = v.Reg()
+	case ssa.OpS390XLoweredGetCallerPC:
+		p := s.Prog(obj.AGETCALLERPC)
+		p.To.Type = obj.TYPE_REG
+		p.To.Reg = v.Reg()
 	case ssa.OpS390XCALLstatic, ssa.OpS390XCALLclosure, ssa.OpS390XCALLinter:
 		s.Call(v)
 	case ssa.OpS390XLoweredWB:

src/cmd/compile/internal/ssa/gen/ARM.rules

@@ -365,6 +365,7 @@
 // pseudo-ops
 (GetClosurePtr) -> (LoweredGetClosurePtr)
 (GetCallerSP) -> (LoweredGetCallerSP)
+(GetCallerPC) -> (LoweredGetCallerPC)
 
 // Absorb pseudo-ops into blocks.
 (If (Equal cc) yes no) -> (EQ cc yes no)

src/cmd/compile/internal/ssa/gen/ARMOps.go

@@ -519,6 +519,12 @@ func init() {
 		// LoweredGetCallerSP returns the SP of the caller of the current function.
 		{name: "LoweredGetCallerSP", reg: gp01, rematerializeable: true},
 
+		// LoweredGetCallerPC evaluates to the PC to which its "caller" will return.
+		// I.e., if f calls g "calls" getcallerpc,
+		// the result should be the PC within f that g will return to.
+		// See runtime/stubs.go for a more detailed discussion.
+		{name: "LoweredGetCallerPC", reg: gp01, rematerializeable: true},
+
 		// Constant flag values. For any comparison, there are 5 possible
 		// outcomes: the three from the signed total order (<,==,>) and the
 		// three from the unsigned total order. The == cases overlap.

src/cmd/compile/internal/ssa/gen/MIPS.rules

@@ -402,6 +402,7 @@
 // pseudo-ops
 (GetClosurePtr) -> (LoweredGetClosurePtr)
 (GetCallerSP) -> (LoweredGetCallerSP)
+(GetCallerPC) -> (LoweredGetCallerPC)
 
 (If cond yes no) -> (NE cond yes no)
 

src/cmd/compile/internal/ssa/gen/MIPS64.rules

@@ -404,6 +404,7 @@
 // pseudo-ops
 (GetClosurePtr) -> (LoweredGetClosurePtr)
 (GetCallerSP) -> (LoweredGetCallerSP)
+(GetCallerPC) -> (LoweredGetCallerPC)
 
 (If cond yes no) -> (NE cond yes no)
 

src/cmd/compile/internal/ssa/gen/MIPS64Ops.go

@@ -409,6 +409,12 @@ func init() {
 		// LoweredGetCallerSP returns the SP of the caller of the current function.
 		{name: "LoweredGetCallerSP", reg: gp01, rematerializeable: true},
 
+		// LoweredGetCallerPC evaluates to the PC to which its "caller" will return.
+		// I.e., if f calls g "calls" getcallerpc,
+		// the result should be the PC within f that g will return to.
+		// See runtime/stubs.go for a more detailed discussion.
+		{name: "LoweredGetCallerPC", reg: gp01, rematerializeable: true},
+
 		// LoweredWB invokes runtime.gcWriteBarrier. arg0=destptr, arg1=srcptr, arg2=mem, aux=runtime.gcWriteBarrier
 		// It saves all GP registers if necessary,
 		// but clobbers R31 (LR) because it's a call

src/cmd/compile/internal/ssa/gen/MIPSOps.go

@@ -379,6 +379,12 @@ func init() {
 		// LoweredGetCallerSP returns the SP of the caller of the current function.
 		{name: "LoweredGetCallerSP", reg: gp01, rematerializeable: true},
 
+		// LoweredGetCallerPC evaluates to the PC to which its "caller" will return.
+		// I.e., if f calls g "calls" getcallerpc,
+		// the result should be the PC within f that g will return to.
+		// See runtime/stubs.go for a more detailed discussion.
+		{name: "LoweredGetCallerPC", reg: gp01, rematerializeable: true},
+
 		// LoweredWB invokes runtime.gcWriteBarrier. arg0=destptr, arg1=srcptr, arg2=mem, aux=runtime.gcWriteBarrier
 		// It saves all GP registers if necessary,
 		// but clobbers R31 (LR) because it's a call

src/cmd/compile/internal/ssa/gen/PPC64.rules

@@ -613,6 +613,7 @@
 // Miscellaneous
 (GetClosurePtr) -> (LoweredGetClosurePtr)
 (GetCallerSP) -> (LoweredGetCallerSP)
+(GetCallerPC) -> (LoweredGetCallerPC)
 (IsNonNil ptr) -> (NotEqual (CMPconst [0] ptr))
 (IsInBounds idx len) -> (LessThan (CMPU idx len))
 (IsSliceInBounds idx len) -> (LessEqual (CMPU idx len))

src/cmd/compile/internal/ssa/gen/PPC64Ops.go

@@ -322,6 +322,12 @@ func init() {
 		// LoweredGetCallerSP returns the SP of the caller of the current function.
 		{name: "LoweredGetCallerSP", reg: gp01, rematerializeable: true},
 
+		// LoweredGetCallerPC evaluates to the PC to which its "caller" will return.
+		// I.e., if f calls g "calls" getcallerpc,
+		// the result should be the PC within f that g will return to.
+		// See runtime/stubs.go for a more detailed discussion.
+		{name: "LoweredGetCallerPC", reg: gp01, rematerializeable: true},
+
 		//arg0=ptr,arg1=mem, returns void.  Faults if ptr is nil.
 		{name: "LoweredNilCheck", argLength: 2, reg: regInfo{inputs: []regMask{gp | sp | sb}, clobbers: tmp}, clobberFlags: true, nilCheck: true, faultOnNilArg0: true},
 		// Round ops to block fused-multiply-add extraction.

src/cmd/compile/internal/ssa/gen/S390X.rules

@@ -384,6 +384,7 @@
 (GetG mem) -> (LoweredGetG mem)
 (GetClosurePtr) -> (LoweredGetClosurePtr)
 (GetCallerSP) -> (LoweredGetCallerSP)
+(GetCallerPC) -> (LoweredGetCallerPC)
 (Addr {sym} base) -> (MOVDaddr {sym} base)
 (ITab (Load ptr mem)) -> (MOVDload ptr mem)
 

src/cmd/compile/internal/ssa/gen/S390XOps.go

@@ -451,6 +451,11 @@ func init() {
 		// arg0=ptr,arg1=mem, returns void.  Faults if ptr is nil.
 		// LoweredGetCallerSP returns the SP of the caller of the current function.
 		{name: "LoweredGetCallerSP", reg: gp01, rematerializeable: true},
+		// LoweredGetCallerPC evaluates to the PC to which its "caller" will return.
+		// I.e., if f calls g "calls" getcallerpc,
+		// the result should be the PC within f that g will return to.
+		// See runtime/stubs.go for a more detailed discussion.
+		{name: "LoweredGetCallerPC", reg: gp01, rematerializeable: true},
 		{name: "LoweredNilCheck", argLength: 2, reg: regInfo{inputs: []regMask{ptrsp}}, clobberFlags: true, nilCheck: true, faultOnNilArg0: true},
 		// Round ops to block fused-multiply-add extraction.
 		{name: "LoweredRound32F", argLength: 1, reg: fp11, resultInArg0: true, zeroWidth: true},

src/cmd/compile/internal/ssa/opGen.go

@@ -1019,6 +1019,7 @@ const (
 	OpARMLoweredMove
 	OpARMLoweredGetClosurePtr
 	OpARMLoweredGetCallerSP
+	OpARMLoweredGetCallerPC
 	OpARMFlagEQ
 	OpARMFlagLT_ULT
 	OpARMFlagLT_UGT
@@ -1374,6 +1375,7 @@ const (
 	OpMIPSFPFlagFalse
 	OpMIPSLoweredGetClosurePtr
 	OpMIPSLoweredGetCallerSP
+	OpMIPSLoweredGetCallerPC
 	OpMIPSLoweredWB
 
 	OpMIPS64ADDV
@@ -1486,6 +1488,7 @@ const (
 	OpMIPS64FPFlagFalse
 	OpMIPS64LoweredGetClosurePtr
 	OpMIPS64LoweredGetCallerSP
+	OpMIPS64LoweredGetCallerPC
 	OpMIPS64LoweredWB
 
 	OpPPC64ADD
@@ -1614,6 +1617,7 @@ const (
 	OpPPC64FGreaterEqual
 	OpPPC64LoweredGetClosurePtr
 	OpPPC64LoweredGetCallerSP
+	OpPPC64LoweredGetCallerPC
 	OpPPC64LoweredNilCheck
 	OpPPC64LoweredRound32F
 	OpPPC64LoweredRound64F
@@ -1826,6 +1830,7 @@ const (
 	OpS390XLoweredGetG
 	OpS390XLoweredGetClosurePtr
 	OpS390XLoweredGetCallerSP
+	OpS390XLoweredGetCallerPC
 	OpS390XLoweredNilCheck
 	OpS390XLoweredRound32F
 	OpS390XLoweredRound64F
@@ -13314,6 +13319,16 @@ var opcodeTable = [...]opInfo{
 			},
 		},
 	},
+	{
+		name:              "LoweredGetCallerPC",
+		argLen:            0,
+		rematerializeable: true,
+		reg: regInfo{
+			outputs: []outputInfo{
+				{0, 21503}, // R0 R1 R2 R3 R4 R5 R6 R7 R8 R9 R12 R14
+			},
+		},
+	},
 	{
 		name:   "FlagEQ",
 		argLen: 0,
@@ -17995,6 +18010,16 @@ var opcodeTable = [...]opInfo{
 			},
 		},
 	},
+	{
+		name:              "LoweredGetCallerPC",
+		argLen:            0,
+		rematerializeable: true,
+		reg: regInfo{
+			outputs: []outputInfo{
+				{0, 335544318}, // R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 R11 R12 R13 R14 R15 R16 R17 R18 R19 R20 R21 R22 R24 R25 R28 R31
+			},
+		},
+	},
 	{
 		name:         "LoweredWB",
 		auxType:      auxSym,
@@ -19515,6 +19540,16 @@ var opcodeTable = [...]opInfo{
 			},
 		},
 	},
+	{
+		name:              "LoweredGetCallerPC",
+		argLen:            0,
+		rematerializeable: true,
+		reg: regInfo{
+			outputs: []outputInfo{
+				{0, 167772158}, // R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 R11 R12 R13 R14 R15 R16 R17 R18 R19 R20 R21 R22 R24 R25 R31
+			},
+		},
+	},
 	{
 		name:         "LoweredWB",
 		auxType:      auxSym,
@@ -21203,6 +21238,16 @@ var opcodeTable = [...]opInfo{
 			},
 		},
 	},
+	{
+		name:              "LoweredGetCallerPC",
+		argLen:            0,
+		rematerializeable: true,
+		reg: regInfo{
+			outputs: []outputInfo{
+				{0, 1073733624}, // R3 R4 R5 R6 R7 R8 R9 R10 R11 R12 R14 R15 R16 R17 R18 R19 R20 R21 R22 R23 R24 R25 R26 R27 R28 R29
+			},
+		},
+	},
 	{
 		name:           "LoweredNilCheck",
 		argLen:         2,
@@ -24309,6 +24354,16 @@ var opcodeTable = [...]opInfo{
 			},
 		},
 	},
+	{
+		name:              "LoweredGetCallerPC",
+		argLen:            0,
+		rematerializeable: true,
+		reg: regInfo{
+			outputs: []outputInfo{
+				{0, 21503}, // R0 R1 R2 R3 R4 R5 R6 R7 R8 R9 R12 R14
+			},
+		},
+	},
 	{
 		name:           "LoweredNilCheck",
 		argLen:         2,

src/cmd/compile/internal/ssa/rewriteARM.go

@@ -551,6 +551,8 @@ func rewriteValueARM(v *Value) bool {
 		return rewriteValueARM_OpGeq8_0(v)
 	case OpGeq8U:
 		return rewriteValueARM_OpGeq8U_0(v)
+	case OpGetCallerPC:
+		return rewriteValueARM_OpGetCallerPC_0(v)
 	case OpGetCallerSP:
 		return rewriteValueARM_OpGetCallerSP_0(v)
 	case OpGetClosurePtr:
@@ -18584,6 +18586,15 @@ func rewriteValueARM_OpGeq8U_0(v *Value) bool {
 		return true
 	}
 }
+func rewriteValueARM_OpGetCallerPC_0(v *Value) bool {
+	// match: (GetCallerPC)
+	// cond:
+	// result: (LoweredGetCallerPC)
+	for {
+		v.reset(OpARMLoweredGetCallerPC)
+		return true
+	}
+}
 func rewriteValueARM_OpGetCallerSP_0(v *Value) bool {
 	// match: (GetCallerSP)
 	// cond:

src/cmd/compile/internal/ssa/rewriteMIPS.go

@@ -145,6 +145,8 @@ func rewriteValueMIPS(v *Value) bool {
 		return rewriteValueMIPS_OpGeq8_0(v)
 	case OpGeq8U:
 		return rewriteValueMIPS_OpGeq8U_0(v)
+	case OpGetCallerPC:
+		return rewriteValueMIPS_OpGetCallerPC_0(v)
 	case OpGetCallerSP:
 		return rewriteValueMIPS_OpGetCallerSP_0(v)
 	case OpGetClosurePtr:
@@ -1760,6 +1762,15 @@ func rewriteValueMIPS_OpGeq8U_0(v *Value) bool {
 		return true
 	}
 }
+func rewriteValueMIPS_OpGetCallerPC_0(v *Value) bool {
+	// match: (GetCallerPC)
+	// cond:
+	// result: (LoweredGetCallerPC)
+	for {
+		v.reset(OpMIPSLoweredGetCallerPC)
+		return true
+	}
+}
 func rewriteValueMIPS_OpGetCallerSP_0(v *Value) bool {
 	// match: (GetCallerSP)
 	// cond:

src/cmd/compile/internal/ssa/rewriteMIPS64.go

@@ -169,6 +169,8 @@ func rewriteValueMIPS64(v *Value) bool {
 		return rewriteValueMIPS64_OpGeq8_0(v)
 	case OpGeq8U:
 		return rewriteValueMIPS64_OpGeq8U_0(v)
+	case OpGetCallerPC:
+		return rewriteValueMIPS64_OpGetCallerPC_0(v)
 	case OpGetCallerSP:
 		return rewriteValueMIPS64_OpGetCallerSP_0(v)
 	case OpGetClosurePtr:
@@ -1931,6 +1933,15 @@ func rewriteValueMIPS64_OpGeq8U_0(v *Value) bool {
 		return true
 	}
 }
+func rewriteValueMIPS64_OpGetCallerPC_0(v *Value) bool {
+	// match: (GetCallerPC)
+	// cond:
+	// result: (LoweredGetCallerPC)
+	for {
+		v.reset(OpMIPS64LoweredGetCallerPC)
+		return true
+	}
+}
 func rewriteValueMIPS64_OpGetCallerSP_0(v *Value) bool {
 	// match: (GetCallerSP)
 	// cond:

src/cmd/compile/internal/ssa/rewritePPC64.go

@@ -191,6 +191,8 @@ func rewriteValuePPC64(v *Value) bool {
 		return rewriteValuePPC64_OpGeq8_0(v)
 	case OpGeq8U:
 		return rewriteValuePPC64_OpGeq8U_0(v)
+	case OpGetCallerPC:
+		return rewriteValuePPC64_OpGetCallerPC_0(v)
 	case OpGetCallerSP:
 		return rewriteValuePPC64_OpGetCallerSP_0(v)
 	case OpGetClosurePtr:
@@ -2110,6 +2112,15 @@ func rewriteValuePPC64_OpGeq8U_0(v *Value) bool {
 		return true
 	}
 }
+func rewriteValuePPC64_OpGetCallerPC_0(v *Value) bool {
+	// match: (GetCallerPC)
+	// cond:
+	// result: (LoweredGetCallerPC)
+	for {
+		v.reset(OpPPC64LoweredGetCallerPC)
+		return true
+	}
+}
 func rewriteValuePPC64_OpGetCallerSP_0(v *Value) bool {
 	// match: (GetCallerSP)
 	// cond:

src/cmd/compile/internal/ssa/rewriteS390X.go

@@ -187,6 +187,8 @@ func rewriteValueS390X(v *Value) bool {
 		return rewriteValueS390X_OpGeq8_0(v)
 	case OpGeq8U:
 		return rewriteValueS390X_OpGeq8U_0(v)
+	case OpGetCallerPC:
+		return rewriteValueS390X_OpGetCallerPC_0(v)
 	case OpGetCallerSP:
 		return rewriteValueS390X_OpGetCallerSP_0(v)
 	case OpGetClosurePtr:
@@ -2277,6 +2279,15 @@ func rewriteValueS390X_OpGeq8U_0(v *Value) bool {
 		return true
 	}
 }
+func rewriteValueS390X_OpGetCallerPC_0(v *Value) bool {
+	// match: (GetCallerPC)
+	// cond:
+	// result: (LoweredGetCallerPC)
+	for {
+		v.reset(OpS390XLoweredGetCallerPC)
+		return true
+	}
+}
 func rewriteValueS390X_OpGetCallerSP_0(v *Value) bool {
 	// match: (GetCallerSP)
 	// cond:

src/cmd/internal/obj/arm/obj5.go

@@ -643,6 +643,19 @@ func preprocess(ctxt *obj.Link, cursym *obj.LSym, newprog obj.ProgAlloc) {
 			if p.From.Type == obj.TYPE_ADDR && p.From.Reg == REGSP && p.To.Type == obj.TYPE_REG && p.To.Reg == REGSP {
 				p.Spadj = int32(-p.From.Offset)
 			}
+
+		case obj.AGETCALLERPC:
+			if cursym.Leaf() {
+				/* MOVW LR, Rd */
+				p.As = AMOVW
+				p.From.Type = obj.TYPE_REG
+				p.From.Reg = REGLINK
+			} else {
+				/* MOVW (RSP), Rd */
+				p.As = AMOVW
+				p.From.Type = obj.TYPE_MEM
+				p.From.Reg = REGSP
+			}
 		}
 	}
 }

src/cmd/internal/obj/mips/obj0.go

@@ -536,6 +536,19 @@ func preprocess(ctxt *obj.Link, cursym *obj.LSym, newprog obj.ProgAlloc) {
 			if p.To.Type == obj.TYPE_REG && p.To.Reg == REGSP && p.From.Type == obj.TYPE_CONST {
 				p.Spadj = int32(-p.From.Offset)
 			}
+
+		case obj.AGETCALLERPC:
+			if cursym.Leaf() {
+				/* MOV LR, Rd */
+				p.As = mov
+				p.From.Type = obj.TYPE_REG
+				p.From.Reg = REGLINK
+			} else {
+				/* MOV (RSP), Rd */
+				p.As = mov
+				p.From.Type = obj.TYPE_MEM
+				p.From.Reg = REGSP
+			}
 		}
 	}
 

src/cmd/internal/obj/ppc64/obj9.go

@@ -781,6 +781,18 @@ func preprocess(ctxt *obj.Link, cursym *obj.LSym, newprog obj.ProgAlloc) {
 			if p.To.Type == obj.TYPE_REG && p.To.Reg == REGSP && p.From.Type == obj.TYPE_CONST {
 				p.Spadj = int32(-p.From.Offset)
 			}
+		case obj.AGETCALLERPC:
+			if cursym.Leaf() {
+				/* MOVD LR, Rd */
+				p.As = AMOVD
+				p.From.Type = obj.TYPE_REG
+				p.From.Reg = REG_LR
+			} else {
+				/* MOVD (RSP), Rd */
+				p.As = AMOVD
+				p.From.Type = obj.TYPE_MEM
+				p.From.Reg = REGSP
+			}
 		}
 	}
 }

src/cmd/internal/obj/s390x/objz.go

@@ -524,6 +524,19 @@ func preprocess(ctxt *obj.Link, cursym *obj.LSym, newprog obj.ProgAlloc) {
 			if p.To.Type == obj.TYPE_REG && p.To.Reg == REGSP && p.From.Type == obj.TYPE_CONST {
 				p.Spadj = int32(-p.From.Offset)
 			}
+
+		case obj.AGETCALLERPC:
+			if cursym.Leaf() {
+				/* MOVD LR, Rd */
+				p.As = AMOVD
+				p.From.Type = obj.TYPE_REG
+				p.From.Reg = REG_LR
+			} else {
+				/* MOVD (RSP), Rd */
+				p.As = AMOVD
+				p.From.Type = obj.TYPE_MEM
+				p.From.Reg = REGSP
+			}
 		}
 	}
 	if wasSplit {

src/runtime/asm_arm.s

@@ -760,11 +760,6 @@ TEXT setg<>(SB),NOSPLIT|NOFRAME,$0-0
 	MOVW	g, R0
 	RET
 
-TEXT runtime·getcallerpc(SB),NOSPLIT|NOFRAME,$0-4
-	MOVW	0(R13), R0		// LR saved by caller
-	MOVW	R0, ret+0(FP)
-	RET
-
 TEXT runtime·emptyfunc(SB),0,$0-0
 	RET
 

src/runtime/asm_mips64x.s

@@ -608,11 +608,6 @@ TEXT setg_gcc<>(SB),NOSPLIT,$0-0
 	JAL	runtime·save_g(SB)
 	RET
 
-TEXT runtime·getcallerpc(SB),NOSPLIT|NOFRAME,$0-8
-	MOVV	0(R29), R1		// LR saved by caller
-	MOVV	R1, ret+0(FP)
-	RET
-
 TEXT runtime·abort(SB),NOSPLIT|NOFRAME,$0-0
 	MOVW	(R0), R0
 	UNDEF

src/runtime/asm_mipsx.s

@@ -611,11 +611,6 @@ TEXT setg_gcc<>(SB),NOSPLIT,$0
 	JAL	runtime·save_g(SB)
 	RET
 
-TEXT runtime·getcallerpc(SB),NOSPLIT|NOFRAME,$0-4
-	MOVW	0(R29), R1	// LR saved by caller
-	MOVW	R1, ret+0(FP)
-	RET
-
 TEXT runtime·abort(SB),NOSPLIT,$0-0
 	UNDEF
 

src/runtime/asm_ppc64x.s

@@ -705,11 +705,6 @@ TEXT setg_gcc<>(SB),NOSPLIT|NOFRAME,$0-0
 	MOVD	R4, LR
 	RET
 
-TEXT runtime·getcallerpc(SB),NOSPLIT|NOFRAME,$0-8
-	MOVD	0(R1), R3		// LR saved by caller
-	MOVD	R3, ret+0(FP)
-	RET
-
 TEXT runtime·abort(SB),NOSPLIT|NOFRAME,$0-0
 	MOVW	(R0), R0
 	UNDEF

src/runtime/asm_s390x.s

@@ -725,11 +725,6 @@ TEXT setg_gcc<>(SB),NOSPLIT|NOFRAME,$0-0
 	MOVD	R1, LR
 	RET
 
-TEXT runtime·getcallerpc(SB),NOSPLIT|NOFRAME,$0-8
-	MOVD	0(R15), R3		// LR saved by caller
-	MOVD	R3, ret+0(FP)
-	RET
-
 TEXT runtime·abort(SB),NOSPLIT|NOFRAME,$0-0
 	MOVW	(R0), R0
 	UNDEF