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path: root/src/cmd/compile/internal/ssa/rewritegeneric.go
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Diffstat (limited to 'src/cmd/compile/internal/ssa/rewritegeneric.go')
-rw-r--r--src/cmd/compile/internal/ssa/rewritegeneric.go220
1 files changed, 216 insertions, 4 deletions
diff --git a/src/cmd/compile/internal/ssa/rewritegeneric.go b/src/cmd/compile/internal/ssa/rewritegeneric.go
index 925ff53fd1..11f4cc7c58 100644
--- a/src/cmd/compile/internal/ssa/rewritegeneric.go
+++ b/src/cmd/compile/internal/ssa/rewritegeneric.go
@@ -124,6 +124,8 @@ func rewriteValuegeneric(v *Value) bool {
return rewriteValuegeneric_OpIMake(v)
case OpInterCall:
return rewriteValuegeneric_OpInterCall(v)
+ case OpInterLECall:
+ return rewriteValuegeneric_OpInterLECall(v)
case OpIsInBounds:
return rewriteValuegeneric_OpIsInBounds(v)
case OpIsNonNil:
@@ -366,6 +368,8 @@ func rewriteValuegeneric(v *Value) bool {
return rewriteValuegeneric_OpSelect0(v)
case OpSelect1:
return rewriteValuegeneric_OpSelect1(v)
+ case OpSelectN:
+ return rewriteValuegeneric_OpSelectN(v)
case OpSignExt16to32:
return rewriteValuegeneric_OpSignExt16to32(v)
case OpSignExt16to64:
@@ -8522,6 +8526,46 @@ func rewriteValuegeneric_OpInterCall(v *Value) bool {
}
return false
}
+func rewriteValuegeneric_OpInterLECall(v *Value) bool {
+ // match: (InterLECall [argsize] {auxCall} (Load (OffPtr [off] (ITab (IMake (Addr {itab} (SB)) _))) _) ___)
+ // cond: devirtLESym(v, auxCall, itab, off) != nil
+ // result: devirtLECall(v, devirtLESym(v, auxCall, itab, off))
+ for {
+ if len(v.Args) < 1 {
+ break
+ }
+ auxCall := auxToCall(v.Aux)
+ v_0 := v.Args[0]
+ if v_0.Op != OpLoad {
+ break
+ }
+ v_0_0 := v_0.Args[0]
+ if v_0_0.Op != OpOffPtr {
+ break
+ }
+ off := auxIntToInt64(v_0_0.AuxInt)
+ v_0_0_0 := v_0_0.Args[0]
+ if v_0_0_0.Op != OpITab {
+ break
+ }
+ v_0_0_0_0 := v_0_0_0.Args[0]
+ if v_0_0_0_0.Op != OpIMake {
+ break
+ }
+ v_0_0_0_0_0 := v_0_0_0_0.Args[0]
+ if v_0_0_0_0_0.Op != OpAddr {
+ break
+ }
+ itab := auxToSym(v_0_0_0_0_0.Aux)
+ v_0_0_0_0_0_0 := v_0_0_0_0_0.Args[0]
+ if v_0_0_0_0_0_0.Op != OpSB || !(devirtLESym(v, auxCall, itab, off) != nil) {
+ break
+ }
+ v.copyOf(devirtLECall(v, devirtLESym(v, auxCall, itab, off)))
+ return true
+ }
+ return false
+}
func rewriteValuegeneric_OpIsInBounds(v *Value) bool {
v_1 := v.Args[1]
v_0 := v.Args[0]
@@ -16082,6 +16126,38 @@ func rewriteValuegeneric_OpNilCheck(v *Value) bool {
v.reset(OpInvalid)
return true
}
+ // match: (NilCheck (SelectN [0] call:(StaticLECall _ _)) (SelectN [1] call))
+ // cond: isSameCall(call.Aux, "runtime.newobject") && warnRule(fe.Debug_checknil(), v, "removed nil check")
+ // result: (Invalid)
+ for {
+ if v_0.Op != OpSelectN || auxIntToInt64(v_0.AuxInt) != 0 {
+ break
+ }
+ call := v_0.Args[0]
+ if call.Op != OpStaticLECall || len(call.Args) != 2 || v_1.Op != OpSelectN || auxIntToInt64(v_1.AuxInt) != 1 || call != v_1.Args[0] || !(isSameCall(call.Aux, "runtime.newobject") && warnRule(fe.Debug_checknil(), v, "removed nil check")) {
+ break
+ }
+ v.reset(OpInvalid)
+ return true
+ }
+ // match: (NilCheck (OffPtr (SelectN [0] call:(StaticLECall _ _))) (SelectN [1] call))
+ // cond: isSameCall(call.Aux, "runtime.newobject") && warnRule(fe.Debug_checknil(), v, "removed nil check")
+ // result: (Invalid)
+ for {
+ if v_0.Op != OpOffPtr {
+ break
+ }
+ v_0_0 := v_0.Args[0]
+ if v_0_0.Op != OpSelectN || auxIntToInt64(v_0_0.AuxInt) != 0 {
+ break
+ }
+ call := v_0_0.Args[0]
+ if call.Op != OpStaticLECall || len(call.Args) != 2 || v_1.Op != OpSelectN || auxIntToInt64(v_1.AuxInt) != 1 || call != v_1.Args[0] || !(isSameCall(call.Aux, "runtime.newobject") && warnRule(fe.Debug_checknil(), v, "removed nil check")) {
+ break
+ }
+ v.reset(OpInvalid)
+ return true
+ }
return false
}
func rewriteValuegeneric_OpNot(v *Value) bool {
@@ -18549,6 +18625,9 @@ func rewriteValuegeneric_OpPhi(v *Value) bool {
// match: (Phi (Const8 [c]) (Const8 [c]))
// result: (Const8 [c])
for {
+ if len(v.Args) != 2 {
+ break
+ }
_ = v.Args[1]
v_0 := v.Args[0]
if v_0.Op != OpConst8 {
@@ -18556,7 +18635,7 @@ func rewriteValuegeneric_OpPhi(v *Value) bool {
}
c := auxIntToInt8(v_0.AuxInt)
v_1 := v.Args[1]
- if v_1.Op != OpConst8 || auxIntToInt8(v_1.AuxInt) != c || len(v.Args) != 2 {
+ if v_1.Op != OpConst8 || auxIntToInt8(v_1.AuxInt) != c {
break
}
v.reset(OpConst8)
@@ -18566,6 +18645,9 @@ func rewriteValuegeneric_OpPhi(v *Value) bool {
// match: (Phi (Const16 [c]) (Const16 [c]))
// result: (Const16 [c])
for {
+ if len(v.Args) != 2 {
+ break
+ }
_ = v.Args[1]
v_0 := v.Args[0]
if v_0.Op != OpConst16 {
@@ -18573,7 +18655,7 @@ func rewriteValuegeneric_OpPhi(v *Value) bool {
}
c := auxIntToInt16(v_0.AuxInt)
v_1 := v.Args[1]
- if v_1.Op != OpConst16 || auxIntToInt16(v_1.AuxInt) != c || len(v.Args) != 2 {
+ if v_1.Op != OpConst16 || auxIntToInt16(v_1.AuxInt) != c {
break
}
v.reset(OpConst16)
@@ -18583,6 +18665,9 @@ func rewriteValuegeneric_OpPhi(v *Value) bool {
// match: (Phi (Const32 [c]) (Const32 [c]))
// result: (Const32 [c])
for {
+ if len(v.Args) != 2 {
+ break
+ }
_ = v.Args[1]
v_0 := v.Args[0]
if v_0.Op != OpConst32 {
@@ -18590,7 +18675,7 @@ func rewriteValuegeneric_OpPhi(v *Value) bool {
}
c := auxIntToInt32(v_0.AuxInt)
v_1 := v.Args[1]
- if v_1.Op != OpConst32 || auxIntToInt32(v_1.AuxInt) != c || len(v.Args) != 2 {
+ if v_1.Op != OpConst32 || auxIntToInt32(v_1.AuxInt) != c {
break
}
v.reset(OpConst32)
@@ -18600,6 +18685,9 @@ func rewriteValuegeneric_OpPhi(v *Value) bool {
// match: (Phi (Const64 [c]) (Const64 [c]))
// result: (Const64 [c])
for {
+ if len(v.Args) != 2 {
+ break
+ }
_ = v.Args[1]
v_0 := v.Args[0]
if v_0.Op != OpConst64 {
@@ -18607,7 +18695,7 @@ func rewriteValuegeneric_OpPhi(v *Value) bool {
}
c := auxIntToInt64(v_0.AuxInt)
v_1 := v.Args[1]
- if v_1.Op != OpConst64 || auxIntToInt64(v_1.AuxInt) != c || len(v.Args) != 2 {
+ if v_1.Op != OpConst64 || auxIntToInt64(v_1.AuxInt) != c {
break
}
v.reset(OpConst64)
@@ -20615,6 +20703,70 @@ func rewriteValuegeneric_OpSelect1(v *Value) bool {
}
return false
}
+func rewriteValuegeneric_OpSelectN(v *Value) bool {
+ v_0 := v.Args[0]
+ b := v.Block
+ config := b.Func.Config
+ // match: (SelectN [0] call:(StaticLECall {sym} dst src (Const64 [sz]) mem))
+ // cond: sz >= 0 && call.Uses == 1 && isSameCall(sym, "runtime.memmove") && dst.Type.IsPtr() && isInlinableMemmove(dst, src, int64(sz), config) && clobber(call)
+ // result: (Move {dst.Type.Elem()} [int64(sz)] dst src mem)
+ for {
+ if auxIntToInt64(v.AuxInt) != 0 {
+ break
+ }
+ call := v_0
+ if call.Op != OpStaticLECall || len(call.Args) != 4 {
+ break
+ }
+ sym := auxToCall(call.Aux)
+ mem := call.Args[3]
+ dst := call.Args[0]
+ src := call.Args[1]
+ call_2 := call.Args[2]
+ if call_2.Op != OpConst64 {
+ break
+ }
+ sz := auxIntToInt64(call_2.AuxInt)
+ if !(sz >= 0 && call.Uses == 1 && isSameCall(sym, "runtime.memmove") && dst.Type.IsPtr() && isInlinableMemmove(dst, src, int64(sz), config) && clobber(call)) {
+ break
+ }
+ v.reset(OpMove)
+ v.AuxInt = int64ToAuxInt(int64(sz))
+ v.Aux = typeToAux(dst.Type.Elem())
+ v.AddArg3(dst, src, mem)
+ return true
+ }
+ // match: (SelectN [0] call:(StaticLECall {sym} dst src (Const32 [sz]) mem))
+ // cond: sz >= 0 && call.Uses == 1 && isSameCall(sym, "runtime.memmove") && dst.Type.IsPtr() && isInlinableMemmove(dst, src, int64(sz), config) && clobber(call)
+ // result: (Move {dst.Type.Elem()} [int64(sz)] dst src mem)
+ for {
+ if auxIntToInt64(v.AuxInt) != 0 {
+ break
+ }
+ call := v_0
+ if call.Op != OpStaticLECall || len(call.Args) != 4 {
+ break
+ }
+ sym := auxToCall(call.Aux)
+ mem := call.Args[3]
+ dst := call.Args[0]
+ src := call.Args[1]
+ call_2 := call.Args[2]
+ if call_2.Op != OpConst32 {
+ break
+ }
+ sz := auxIntToInt32(call_2.AuxInt)
+ if !(sz >= 0 && call.Uses == 1 && isSameCall(sym, "runtime.memmove") && dst.Type.IsPtr() && isInlinableMemmove(dst, src, int64(sz), config) && clobber(call)) {
+ break
+ }
+ v.reset(OpMove)
+ v.AuxInt = int64ToAuxInt(int64(sz))
+ v.Aux = typeToAux(dst.Type.Elem())
+ v.AddArg3(dst, src, mem)
+ return true
+ }
+ return false
+}
func rewriteValuegeneric_OpSignExt16to32(v *Value) bool {
v_0 := v.Args[0]
// match: (SignExt16to32 (Const16 [c]))
@@ -21660,6 +21812,48 @@ func rewriteValuegeneric_OpStore(v *Value) bool {
v.copyOf(mem)
return true
}
+ // match: (Store (SelectN [0] call:(StaticLECall _ _)) x mem:(SelectN [1] call))
+ // cond: isConstZero(x) && isSameCall(call.Aux, "runtime.newobject")
+ // result: mem
+ for {
+ if v_0.Op != OpSelectN || auxIntToInt64(v_0.AuxInt) != 0 {
+ break
+ }
+ call := v_0.Args[0]
+ if call.Op != OpStaticLECall || len(call.Args) != 2 {
+ break
+ }
+ x := v_1
+ mem := v_2
+ if mem.Op != OpSelectN || auxIntToInt64(mem.AuxInt) != 1 || call != mem.Args[0] || !(isConstZero(x) && isSameCall(call.Aux, "runtime.newobject")) {
+ break
+ }
+ v.copyOf(mem)
+ return true
+ }
+ // match: (Store (OffPtr (SelectN [0] call:(StaticLECall _ _))) x mem:(SelectN [1] call))
+ // cond: isConstZero(x) && isSameCall(call.Aux, "runtime.newobject")
+ // result: mem
+ for {
+ if v_0.Op != OpOffPtr {
+ break
+ }
+ v_0_0 := v_0.Args[0]
+ if v_0_0.Op != OpSelectN || auxIntToInt64(v_0_0.AuxInt) != 0 {
+ break
+ }
+ call := v_0_0.Args[0]
+ if call.Op != OpStaticLECall || len(call.Args) != 2 {
+ break
+ }
+ x := v_1
+ mem := v_2
+ if mem.Op != OpSelectN || auxIntToInt64(mem.AuxInt) != 1 || call != mem.Args[0] || !(isConstZero(x) && isSameCall(call.Aux, "runtime.newobject")) {
+ break
+ }
+ v.copyOf(mem)
+ return true
+ }
// match: (Store {t1} op1:(OffPtr [o1] p1) d1 m2:(Store {t2} op2:(OffPtr [0] p2) d2 m3:(Move [n] p3 _ mem)))
// cond: m2.Uses == 1 && m3.Uses == 1 && o1 == t2.Size() && n == t2.Size() + t1.Size() && isSamePtr(p1, p2) && isSamePtr(p2, p3) && clobber(m2, m3)
// result: (Store {t1} op1 d1 (Store {t2} op2 d2 mem))
@@ -24357,6 +24551,24 @@ func rewriteValuegeneric_OpZero(v *Value) bool {
v.copyOf(mem)
return true
}
+ // match: (Zero (SelectN [0] call:(StaticLECall _ _)) mem:(SelectN [1] call))
+ // cond: isSameCall(call.Aux, "runtime.newobject")
+ // result: mem
+ for {
+ if v_0.Op != OpSelectN || auxIntToInt64(v_0.AuxInt) != 0 {
+ break
+ }
+ call := v_0.Args[0]
+ if call.Op != OpStaticLECall || len(call.Args) != 2 {
+ break
+ }
+ mem := v_1
+ if mem.Op != OpSelectN || auxIntToInt64(mem.AuxInt) != 1 || call != mem.Args[0] || !(isSameCall(call.Aux, "runtime.newobject")) {
+ break
+ }
+ v.copyOf(mem)
+ return true
+ }
// match: (Zero {t1} [n] p1 store:(Store {t2} (OffPtr [o2] p2) _ mem))
// cond: isSamePtr(p1, p2) && store.Uses == 1 && n >= o2 + t2.Size() && clobber(store)
// result: (Zero {t1} [n] p1 mem)
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