cmd/compile: update s390x CALL* ops

This CL allow the CALL ops to take variable no of arguments.

Update #40724

Change-Id: Ibfa2e98c5051684cae69200c396dfa1edb2878e4
Reviewed-on: https://go-review.googlesource.com/c/go/+/719464
Reviewed-by: Vishwanatha HD <vishwanatha.hd@ibm.com>
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: David Chase <drchase@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>

diff --git a/src/cmd/compile/internal/ssa/_gen/S390XOps.go b/src/cmd/compile/internal/ssa/_gen/S390XOps.go
index 10d88a9c364c897b9456272e2f10cc0faa287223..9e67a06ce8cec50685f40da681c3e25e1d329817 100644 (file)
--- a/src/cmd/compile/internal/ssa/_gen/S390XOps.go
+++ b/src/cmd/compile/internal/ssa/_gen/S390XOps.go
@@ -484,10 +484,10 @@ func init() {
 
                {name: "CLEAR", argLength: 2, reg: regInfo{inputs: []regMask{ptr, 0}}, asm: "CLEAR", aux: "SymValAndOff", typ: "Mem", clobberFlags: true, faultOnNilArg0: true, symEffect: "Write"},
 
-               {name: "CALLstatic", argLength: 1, reg: regInfo{clobbers: callerSave}, aux: "CallOff", clobberFlags: true, call: true},                                                // call static function aux.(*obj.LSym).  arg0=mem, auxint=argsize, returns mem
-               {name: "CALLtail", argLength: 1, reg: regInfo{clobbers: callerSave}, aux: "CallOff", clobberFlags: true, call: true, tailCall: true},                                  // tail call static function aux.(*obj.LSym).  arg0=mem, auxint=argsize, returns mem
-               {name: "CALLclosure", argLength: 3, reg: regInfo{inputs: []regMask{ptrsp, buildReg("R12"), 0}, clobbers: callerSave}, aux: "CallOff", clobberFlags: true, call: true}, // call function via closure.  arg0=codeptr, arg1=closure, arg2=mem, auxint=argsize, returns mem
-               {name: "CALLinter", argLength: 2, reg: regInfo{inputs: []regMask{ptr}, clobbers: callerSave}, aux: "CallOff", clobberFlags: true, call: true},                         // call fn by pointer.  arg0=codeptr, arg1=mem, auxint=argsize, returns mem
+               {name: "CALLstatic", argLength: -1, reg: regInfo{clobbers: callerSave}, aux: "CallOff", clobberFlags: true, call: true},                                                // call static function aux.(*obj.LSym).  last arg=mem, auxint=argsize, returns mem
+               {name: "CALLtail", argLength: -1, reg: regInfo{clobbers: callerSave}, aux: "CallOff", clobberFlags: true, call: true, tailCall: true},                                  // tail call static function aux.(*obj.LSym).  last arg=mem, auxint=argsize, returns mem
+               {name: "CALLclosure", argLength: -1, reg: regInfo{inputs: []regMask{ptrsp, buildReg("R12"), 0}, clobbers: callerSave}, aux: "CallOff", clobberFlags: true, call: true}, // call function via closure.  arg0=codeptr, arg1=closure, last arg=mem, auxint=argsize, returns mem
+               {name: "CALLinter", argLength: -1, reg: regInfo{inputs: []regMask{ptr}, clobbers: callerSave}, aux: "CallOff", clobberFlags: true, call: true},                         // call fn by pointer.  arg0=codeptr, last arg=mem, auxint=argsize, returns mem
 
                // (InvertFlags (CMP a b)) == (CMP b a)
                // InvertFlags is a pseudo-op which can't appear in assembly output.

diff --git a/src/cmd/compile/internal/ssa/opGen.go b/src/cmd/compile/internal/ssa/opGen.go
index 8ebdb9d944336bb2dd212342721c6821b1ec6a8d..c7777f246eb41c5f3538f171ab6b556a69b95631 100644 (file)
--- a/src/cmd/compile/internal/ssa/opGen.go
+++ b/src/cmd/compile/internal/ssa/opGen.go
@@ -38596,7 +38596,7 @@ var opcodeTable = [...]opInfo{
        {
                name:         "CALLstatic",
                auxType:      auxCallOff,
-               argLen:       1,
+               argLen:       -1,
                clobberFlags: true,
                call:         true,
                reg: regInfo{
@@ -38606,7 +38606,7 @@ var opcodeTable = [...]opInfo{
        {
                name:         "CALLtail",
                auxType:      auxCallOff,
-               argLen:       1,
+               argLen:       -1,
                clobberFlags: true,
                call:         true,
                tailCall:     true,
@@ -38617,7 +38617,7 @@ var opcodeTable = [...]opInfo{
        {
                name:         "CALLclosure",
                auxType:      auxCallOff,
-               argLen:       3,
+               argLen:       -1,
                clobberFlags: true,
                call:         true,
                reg: regInfo{
@@ -38631,7 +38631,7 @@ var opcodeTable = [...]opInfo{
        {
                name:         "CALLinter",
                auxType:      auxCallOff,
-               argLen:       2,
+               argLen:       -1,
                clobberFlags: true,
                call:         true,
                reg: regInfo{