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cmd/compile: optimize small zeroing/moving on riscv64

Optimize small (s <= 32) zeroing/moving operations on riscv64.
Avoid generating unaligned memory accesses.

The code is almost one to one translation of the corresponding
mips64 rules with additional rule for s=32.

Change-Id: I753b0b8e53cb9efcf43c8080cab90f3d03539fb8
Reviewed-on: https://go-review.googlesource.com/c/go/+/266217
Reviewed-by: Joel Sing <joel@sing.id.au>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
This commit is contained in:
Michał Derkacz 2020-10-29 01:10:49 +01:00 committed by Joel Sing
parent 5a267c840a
commit 0be8280d8d
2 changed files with 757 additions and 42 deletions

View File

@ -9,7 +9,6 @@
// * Optimize left and right shift by simplifying SLTIU, Neg, and ADD for constants.
// * Arrange for non-trivial Zero and Move lowerings to use aligned loads and stores.
// * Eliminate zero immediate shifts, adds, etc.
// * Use a Duff's device for some moves and zeros.
// * Avoid using Neq32 for writeBarrier.enabled checks.
// Lowering arithmetic
@ -352,18 +351,64 @@
// with OffPtr -> ADDI.
(ADDI [c] (MOVaddr [d] {s} x)) && is32Bit(c+int64(d)) => (MOVaddr [int32(c)+d] {s} x)
// Zeroing
// TODO: more optimized zeroing, including attempting to use aligned accesses.
(Zero [0] _ mem) => mem
(Zero [1] ptr mem) => (MOVBstore ptr (MOVBconst) mem)
(Zero [2] ptr mem) => (MOVHstore ptr (MOVHconst) mem)
(Zero [4] ptr mem) => (MOVWstore ptr (MOVWconst) mem)
(Zero [8] ptr mem) => (MOVDstore ptr (MOVDconst) mem)
// Small zeroing
(Zero [0] _ mem) => mem
(Zero [1] ptr mem) => (MOVBstore ptr (MOVBconst [0]) mem)
(Zero [2] {t} ptr mem) && t.Alignment()%2 == 0 =>
(MOVHstore ptr (MOVHconst [0]) mem)
(Zero [2] ptr mem) =>
(MOVBstore [1] ptr (MOVBconst [0])
(MOVBstore ptr (MOVBconst [0]) mem))
(Zero [4] {t} ptr mem) && t.Alignment()%4 == 0 =>
(MOVWstore ptr (MOVWconst [0]) mem)
(Zero [4] {t} ptr mem) && t.Alignment()%2 == 0 =>
(MOVHstore [2] ptr (MOVHconst [0])
(MOVHstore ptr (MOVHconst [0]) mem))
(Zero [4] ptr mem) =>
(MOVBstore [3] ptr (MOVBconst [0])
(MOVBstore [2] ptr (MOVBconst [0])
(MOVBstore [1] ptr (MOVBconst [0])
(MOVBstore ptr (MOVBconst [0]) mem))))
(Zero [8] {t} ptr mem) && t.Alignment()%8 == 0 =>
(MOVDstore ptr (MOVDconst [0]) mem)
(Zero [8] {t} ptr mem) && t.Alignment()%4 == 0 =>
(MOVWstore [4] ptr (MOVWconst [0])
(MOVWstore ptr (MOVWconst [0]) mem))
(Zero [8] {t} ptr mem) && t.Alignment()%2 == 0 =>
(MOVHstore [6] ptr (MOVHconst [0])
(MOVHstore [4] ptr (MOVHconst [0])
(MOVHstore [2] ptr (MOVHconst [0])
(MOVHstore ptr (MOVHconst [0]) mem))))
// Medium zeroing uses a Duff's device
(Zero [3] ptr mem) =>
(MOVBstore [2] ptr (MOVBconst [0])
(MOVBstore [1] ptr (MOVBconst [0])
(MOVBstore ptr (MOVBconst [0]) mem)))
(Zero [6] {t} ptr mem) && t.Alignment()%2 == 0 =>
(MOVHstore [4] ptr (MOVHconst [0])
(MOVHstore [2] ptr (MOVHconst [0])
(MOVHstore ptr (MOVHconst [0]) mem)))
(Zero [12] {t} ptr mem) && t.Alignment()%4 == 0 =>
(MOVWstore [8] ptr (MOVWconst [0])
(MOVWstore [4] ptr (MOVWconst [0])
(MOVWstore ptr (MOVWconst [0]) mem)))
(Zero [16] {t} ptr mem) && t.Alignment()%8 == 0 =>
(MOVDstore [8] ptr (MOVDconst [0])
(MOVDstore ptr (MOVDconst [0]) mem))
(Zero [24] {t} ptr mem) && t.Alignment()%8 == 0 =>
(MOVDstore [16] ptr (MOVDconst [0])
(MOVDstore [8] ptr (MOVDconst [0])
(MOVDstore ptr (MOVDconst [0]) mem)))
(Zero [32] {t} ptr mem) && t.Alignment()%8 == 0 =>
(MOVDstore [24] ptr (MOVDconst [0])
(MOVDstore [16] ptr (MOVDconst [0])
(MOVDstore [8] ptr (MOVDconst [0])
(MOVDstore ptr (MOVDconst [0]) mem))))
// Medium 8-aligned zeroing uses a Duff's device
// 8 and 128 are magic constants, see runtime/mkduff.go
(Zero [s] {t} ptr mem)
&& s%8 == 0 && s >= 16 && s <= 8*128
&& s%8 == 0 && s <= 8*128
&& t.Alignment()%8 == 0 && !config.noDuffDevice =>
(DUFFZERO [8 * (128 - s/8)] ptr mem)
@ -377,7 +422,7 @@
(Convert ...) => (MOVconvert ...)
// Checks
(IsNonNil p) => (NeqPtr (MOVDconst) p)
(IsNonNil p) => (NeqPtr (MOVDconst [0]) p)
(IsInBounds ...) => (Less64U ...)
(IsSliceInBounds ...) => (Leq64U ...)
@ -394,18 +439,64 @@
(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)
// Moves
// TODO: more optimized moves, including attempting to use aligned accesses.
(Move [0] _ _ mem) => mem
// Small moves
(Move [0] _ _ mem) => mem
(Move [1] dst src mem) => (MOVBstore dst (MOVBload src mem) mem)
(Move [2] dst src mem) => (MOVHstore dst (MOVHload src mem) mem)
(Move [4] dst src mem) => (MOVWstore dst (MOVWload src mem) mem)
(Move [8] dst src mem) => (MOVDstore dst (MOVDload src mem) mem)
(Move [2] {t} dst src mem) && t.Alignment()%2 == 0 =>
(MOVHstore dst (MOVHload src mem) mem)
(Move [2] dst src mem) =>
(MOVBstore [1] dst (MOVBload [1] src mem)
(MOVBstore dst (MOVBload src mem) mem))
(Move [4] {t} dst src mem) && t.Alignment()%4 == 0 =>
(MOVWstore dst (MOVWload src mem) mem)
(Move [4] {t} dst src mem) && t.Alignment()%2 == 0 =>
(MOVHstore [2] dst (MOVHload [2] src mem)
(MOVHstore dst (MOVHload src mem) mem))
(Move [4] dst src mem) =>
(MOVBstore [3] dst (MOVBload [3] src mem)
(MOVBstore [2] dst (MOVBload [2] src mem)
(MOVBstore [1] dst (MOVBload [1] src mem)
(MOVBstore dst (MOVBload src mem) mem))))
(Move [8] {t} dst src mem) && t.Alignment()%8 == 0 =>
(MOVDstore dst (MOVDload src mem) mem)
(Move [8] {t} dst src mem) && t.Alignment()%4 == 0 =>
(MOVWstore [4] dst (MOVWload [4] src mem)
(MOVWstore dst (MOVWload src mem) mem))
(Move [8] {t} dst src mem) && t.Alignment()%2 == 0 =>
(MOVHstore [6] dst (MOVHload [6] src mem)
(MOVHstore [4] dst (MOVHload [4] src mem)
(MOVHstore [2] dst (MOVHload [2] src mem)
(MOVHstore dst (MOVHload src mem) mem))))
// Medium move uses a Duff's device
(Move [3] dst src mem) =>
(MOVBstore [2] dst (MOVBload [2] src mem)
(MOVBstore [1] dst (MOVBload [1] src mem)
(MOVBstore dst (MOVBload src mem) mem)))
(Move [6] {t} dst src mem) && t.Alignment()%2 == 0 =>
(MOVHstore [4] dst (MOVHload [4] src mem)
(MOVHstore [2] dst (MOVHload [2] src mem)
(MOVHstore dst (MOVHload src mem) mem)))
(Move [12] {t} dst src mem) && t.Alignment()%4 == 0 =>
(MOVWstore [8] dst (MOVWload [8] src mem)
(MOVWstore [4] dst (MOVWload [4] src mem)
(MOVWstore dst (MOVWload src mem) mem)))
(Move [16] {t} dst src mem) && t.Alignment()%8 == 0 =>
(MOVDstore [8] dst (MOVDload [8] src mem)
(MOVDstore dst (MOVDload src mem) mem))
(Move [24] {t} dst src mem) && t.Alignment()%8 == 0 =>
(MOVDstore [16] dst (MOVDload [16] src mem)
(MOVDstore [8] dst (MOVDload [8] src mem)
(MOVDstore dst (MOVDload src mem) mem)))
(Move [32] {t} dst src mem) && t.Alignment()%8 == 0 =>
(MOVDstore [24] dst (MOVDload [24] src mem)
(MOVDstore [16] dst (MOVDload [16] src mem)
(MOVDstore [8] dst (MOVDload [8] src mem)
(MOVDstore dst (MOVDload src mem) mem))))
// Medium 8-aligned move uses a Duff's device
// 16 and 128 are magic constants, see runtime/mkduff.go
(Move [s] {t} dst src mem)
&& s%8 == 0 && s >= 16 && s <= 8*128 && t.Alignment()%8 == 0
&& s%8 == 0 && s <= 8*128 && t.Alignment()%8 == 0
&& !config.noDuffDevice && logLargeCopy(v, s) =>
(DUFFCOPY [16 * (128 - s/8)] dst src mem)

View File

@ -4,6 +4,7 @@
package ssa
import "math"
import "cmd/compile/internal/types"
func rewriteValueRISCV64(v *Value) bool {
switch v.Op {
@ -1020,11 +1021,12 @@ func rewriteValueRISCV64_OpIsNonNil(v *Value) bool {
b := v.Block
typ := &b.Func.Config.Types
// match: (IsNonNil p)
// result: (NeqPtr (MOVDconst) p)
// result: (NeqPtr (MOVDconst [0]) p)
for {
p := v_0
v.reset(OpNeqPtr)
v0 := b.NewValue0(v.Pos, OpRISCV64MOVDconst, typ.UInt64)
v0.AuxInt = int64ToAuxInt(0)
v.AddArg2(v0, p)
return true
}
@ -1971,8 +1973,28 @@ func rewriteValueRISCV64_OpMove(v *Value) bool {
v.AddArg3(dst, v0, mem)
return true
}
// match: (Move [2] dst src mem)
// match: (Move [2] {t} dst src mem)
// cond: t.Alignment()%2 == 0
// result: (MOVHstore dst (MOVHload src mem) mem)
for {
if auxIntToInt64(v.AuxInt) != 2 {
break
}
t := auxToType(v.Aux)
dst := v_0
src := v_1
mem := v_2
if !(t.Alignment()%2 == 0) {
break
}
v.reset(OpRISCV64MOVHstore)
v0 := b.NewValue0(v.Pos, OpRISCV64MOVHload, typ.Int16)
v0.AddArg2(src, mem)
v.AddArg3(dst, v0, mem)
return true
}
// match: (Move [2] dst src mem)
// result: (MOVBstore [1] dst (MOVBload [1] src mem) (MOVBstore dst (MOVBload src mem) mem))
for {
if auxIntToInt64(v.AuxInt) != 2 {
break
@ -1980,14 +2002,66 @@ func rewriteValueRISCV64_OpMove(v *Value) bool {
dst := v_0
src := v_1
mem := v_2
v.reset(OpRISCV64MOVHstore)
v0 := b.NewValue0(v.Pos, OpRISCV64MOVHload, typ.Int16)
v.reset(OpRISCV64MOVBstore)
v.AuxInt = int32ToAuxInt(1)
v0 := b.NewValue0(v.Pos, OpRISCV64MOVBload, typ.Int8)
v0.AuxInt = int32ToAuxInt(1)
v0.AddArg2(src, mem)
v1 := b.NewValue0(v.Pos, OpRISCV64MOVBstore, types.TypeMem)
v2 := b.NewValue0(v.Pos, OpRISCV64MOVBload, typ.Int8)
v2.AddArg2(src, mem)
v1.AddArg3(dst, v2, mem)
v.AddArg3(dst, v0, v1)
return true
}
// match: (Move [4] {t} dst src mem)
// cond: t.Alignment()%4 == 0
// result: (MOVWstore dst (MOVWload src mem) mem)
for {
if auxIntToInt64(v.AuxInt) != 4 {
break
}
t := auxToType(v.Aux)
dst := v_0
src := v_1
mem := v_2
if !(t.Alignment()%4 == 0) {
break
}
v.reset(OpRISCV64MOVWstore)
v0 := b.NewValue0(v.Pos, OpRISCV64MOVWload, typ.Int32)
v0.AddArg2(src, mem)
v.AddArg3(dst, v0, mem)
return true
}
// match: (Move [4] {t} dst src mem)
// cond: t.Alignment()%2 == 0
// result: (MOVHstore [2] dst (MOVHload [2] src mem) (MOVHstore dst (MOVHload src mem) mem))
for {
if auxIntToInt64(v.AuxInt) != 4 {
break
}
t := auxToType(v.Aux)
dst := v_0
src := v_1
mem := v_2
if !(t.Alignment()%2 == 0) {
break
}
v.reset(OpRISCV64MOVHstore)
v.AuxInt = int32ToAuxInt(2)
v0 := b.NewValue0(v.Pos, OpRISCV64MOVHload, typ.Int16)
v0.AuxInt = int32ToAuxInt(2)
v0.AddArg2(src, mem)
v1 := b.NewValue0(v.Pos, OpRISCV64MOVHstore, types.TypeMem)
v2 := b.NewValue0(v.Pos, OpRISCV64MOVHload, typ.Int16)
v2.AddArg2(src, mem)
v1.AddArg3(dst, v2, mem)
v.AddArg3(dst, v0, v1)
return true
}
// match: (Move [4] dst src mem)
// result: (MOVWstore dst (MOVWload src mem) mem)
// result: (MOVBstore [3] dst (MOVBload [3] src mem) (MOVBstore [2] dst (MOVBload [2] src mem) (MOVBstore [1] dst (MOVBload [1] src mem) (MOVBstore dst (MOVBload src mem) mem))))
for {
if auxIntToInt64(v.AuxInt) != 4 {
break
@ -1995,29 +2069,303 @@ func rewriteValueRISCV64_OpMove(v *Value) bool {
dst := v_0
src := v_1
mem := v_2
v.reset(OpRISCV64MOVWstore)
v0 := b.NewValue0(v.Pos, OpRISCV64MOVWload, typ.Int32)
v.reset(OpRISCV64MOVBstore)
v.AuxInt = int32ToAuxInt(3)
v0 := b.NewValue0(v.Pos, OpRISCV64MOVBload, typ.Int8)
v0.AuxInt = int32ToAuxInt(3)
v0.AddArg2(src, mem)
v.AddArg3(dst, v0, mem)
v1 := b.NewValue0(v.Pos, OpRISCV64MOVBstore, types.TypeMem)
v1.AuxInt = int32ToAuxInt(2)
v2 := b.NewValue0(v.Pos, OpRISCV64MOVBload, typ.Int8)
v2.AuxInt = int32ToAuxInt(2)
v2.AddArg2(src, mem)
v3 := b.NewValue0(v.Pos, OpRISCV64MOVBstore, types.TypeMem)
v3.AuxInt = int32ToAuxInt(1)
v4 := b.NewValue0(v.Pos, OpRISCV64MOVBload, typ.Int8)
v4.AuxInt = int32ToAuxInt(1)
v4.AddArg2(src, mem)
v5 := b.NewValue0(v.Pos, OpRISCV64MOVBstore, types.TypeMem)
v6 := b.NewValue0(v.Pos, OpRISCV64MOVBload, typ.Int8)
v6.AddArg2(src, mem)
v5.AddArg3(dst, v6, mem)
v3.AddArg3(dst, v4, v5)
v1.AddArg3(dst, v2, v3)
v.AddArg3(dst, v0, v1)
return true
}
// match: (Move [8] dst src mem)
// match: (Move [8] {t} dst src mem)
// cond: t.Alignment()%8 == 0
// result: (MOVDstore dst (MOVDload src mem) mem)
for {
if auxIntToInt64(v.AuxInt) != 8 {
break
}
t := auxToType(v.Aux)
dst := v_0
src := v_1
mem := v_2
if !(t.Alignment()%8 == 0) {
break
}
v.reset(OpRISCV64MOVDstore)
v0 := b.NewValue0(v.Pos, OpRISCV64MOVDload, typ.Int64)
v0.AddArg2(src, mem)
v.AddArg3(dst, v0, mem)
return true
}
// match: (Move [8] {t} dst src mem)
// cond: t.Alignment()%4 == 0
// result: (MOVWstore [4] dst (MOVWload [4] src mem) (MOVWstore dst (MOVWload src mem) mem))
for {
if auxIntToInt64(v.AuxInt) != 8 {
break
}
t := auxToType(v.Aux)
dst := v_0
src := v_1
mem := v_2
if !(t.Alignment()%4 == 0) {
break
}
v.reset(OpRISCV64MOVWstore)
v.AuxInt = int32ToAuxInt(4)
v0 := b.NewValue0(v.Pos, OpRISCV64MOVWload, typ.Int32)
v0.AuxInt = int32ToAuxInt(4)
v0.AddArg2(src, mem)
v1 := b.NewValue0(v.Pos, OpRISCV64MOVWstore, types.TypeMem)
v2 := b.NewValue0(v.Pos, OpRISCV64MOVWload, typ.Int32)
v2.AddArg2(src, mem)
v1.AddArg3(dst, v2, mem)
v.AddArg3(dst, v0, v1)
return true
}
// match: (Move [8] {t} dst src mem)
// cond: t.Alignment()%2 == 0
// result: (MOVHstore [6] dst (MOVHload [6] src mem) (MOVHstore [4] dst (MOVHload [4] src mem) (MOVHstore [2] dst (MOVHload [2] src mem) (MOVHstore dst (MOVHload src mem) mem))))
for {
if auxIntToInt64(v.AuxInt) != 8 {
break
}
t := auxToType(v.Aux)
dst := v_0
src := v_1
mem := v_2
if !(t.Alignment()%2 == 0) {
break
}
v.reset(OpRISCV64MOVHstore)
v.AuxInt = int32ToAuxInt(6)
v0 := b.NewValue0(v.Pos, OpRISCV64MOVHload, typ.Int16)
v0.AuxInt = int32ToAuxInt(6)
v0.AddArg2(src, mem)
v1 := b.NewValue0(v.Pos, OpRISCV64MOVHstore, types.TypeMem)
v1.AuxInt = int32ToAuxInt(4)
v2 := b.NewValue0(v.Pos, OpRISCV64MOVHload, typ.Int16)
v2.AuxInt = int32ToAuxInt(4)
v2.AddArg2(src, mem)
v3 := b.NewValue0(v.Pos, OpRISCV64MOVHstore, types.TypeMem)
v3.AuxInt = int32ToAuxInt(2)
v4 := b.NewValue0(v.Pos, OpRISCV64MOVHload, typ.Int16)
v4.AuxInt = int32ToAuxInt(2)
v4.AddArg2(src, mem)
v5 := b.NewValue0(v.Pos, OpRISCV64MOVHstore, types.TypeMem)
v6 := b.NewValue0(v.Pos, OpRISCV64MOVHload, typ.Int16)
v6.AddArg2(src, mem)
v5.AddArg3(dst, v6, mem)
v3.AddArg3(dst, v4, v5)
v1.AddArg3(dst, v2, v3)
v.AddArg3(dst, v0, v1)
return true
}
// match: (Move [3] dst src mem)
// result: (MOVBstore [2] dst (MOVBload [2] src mem) (MOVBstore [1] dst (MOVBload [1] src mem) (MOVBstore dst (MOVBload src mem) mem)))
for {
if auxIntToInt64(v.AuxInt) != 3 {
break
}
dst := v_0
src := v_1
mem := v_2
v.reset(OpRISCV64MOVBstore)
v.AuxInt = int32ToAuxInt(2)
v0 := b.NewValue0(v.Pos, OpRISCV64MOVBload, typ.Int8)
v0.AuxInt = int32ToAuxInt(2)
v0.AddArg2(src, mem)
v1 := b.NewValue0(v.Pos, OpRISCV64MOVBstore, types.TypeMem)
v1.AuxInt = int32ToAuxInt(1)
v2 := b.NewValue0(v.Pos, OpRISCV64MOVBload, typ.Int8)
v2.AuxInt = int32ToAuxInt(1)
v2.AddArg2(src, mem)
v3 := b.NewValue0(v.Pos, OpRISCV64MOVBstore, types.TypeMem)
v4 := b.NewValue0(v.Pos, OpRISCV64MOVBload, typ.Int8)
v4.AddArg2(src, mem)
v3.AddArg3(dst, v4, mem)
v1.AddArg3(dst, v2, v3)
v.AddArg3(dst, v0, v1)
return true
}
// match: (Move [6] {t} dst src mem)
// cond: t.Alignment()%2 == 0
// result: (MOVHstore [4] dst (MOVHload [4] src mem) (MOVHstore [2] dst (MOVHload [2] src mem) (MOVHstore dst (MOVHload src mem) mem)))
for {
if auxIntToInt64(v.AuxInt) != 6 {
break
}
t := auxToType(v.Aux)
dst := v_0
src := v_1
mem := v_2
if !(t.Alignment()%2 == 0) {
break
}
v.reset(OpRISCV64MOVHstore)
v.AuxInt = int32ToAuxInt(4)
v0 := b.NewValue0(v.Pos, OpRISCV64MOVHload, typ.Int16)
v0.AuxInt = int32ToAuxInt(4)
v0.AddArg2(src, mem)
v1 := b.NewValue0(v.Pos, OpRISCV64MOVHstore, types.TypeMem)
v1.AuxInt = int32ToAuxInt(2)
v2 := b.NewValue0(v.Pos, OpRISCV64MOVHload, typ.Int16)
v2.AuxInt = int32ToAuxInt(2)
v2.AddArg2(src, mem)
v3 := b.NewValue0(v.Pos, OpRISCV64MOVHstore, types.TypeMem)
v4 := b.NewValue0(v.Pos, OpRISCV64MOVHload, typ.Int16)
v4.AddArg2(src, mem)
v3.AddArg3(dst, v4, mem)
v1.AddArg3(dst, v2, v3)
v.AddArg3(dst, v0, v1)
return true
}
// match: (Move [12] {t} dst src mem)
// cond: t.Alignment()%4 == 0
// result: (MOVWstore [8] dst (MOVWload [8] src mem) (MOVWstore [4] dst (MOVWload [4] src mem) (MOVWstore dst (MOVWload src mem) mem)))
for {
if auxIntToInt64(v.AuxInt) != 12 {
break
}
t := auxToType(v.Aux)
dst := v_0
src := v_1
mem := v_2
if !(t.Alignment()%4 == 0) {
break
}
v.reset(OpRISCV64MOVWstore)
v.AuxInt = int32ToAuxInt(8)
v0 := b.NewValue0(v.Pos, OpRISCV64MOVWload, typ.Int32)
v0.AuxInt = int32ToAuxInt(8)
v0.AddArg2(src, mem)
v1 := b.NewValue0(v.Pos, OpRISCV64MOVWstore, types.TypeMem)
v1.AuxInt = int32ToAuxInt(4)
v2 := b.NewValue0(v.Pos, OpRISCV64MOVWload, typ.Int32)
v2.AuxInt = int32ToAuxInt(4)
v2.AddArg2(src, mem)
v3 := b.NewValue0(v.Pos, OpRISCV64MOVWstore, types.TypeMem)
v4 := b.NewValue0(v.Pos, OpRISCV64MOVWload, typ.Int32)
v4.AddArg2(src, mem)
v3.AddArg3(dst, v4, mem)
v1.AddArg3(dst, v2, v3)
v.AddArg3(dst, v0, v1)
return true
}
// match: (Move [16] {t} dst src mem)
// cond: t.Alignment()%8 == 0
// result: (MOVDstore [8] dst (MOVDload [8] src mem) (MOVDstore dst (MOVDload src mem) mem))
for {
if auxIntToInt64(v.AuxInt) != 16 {
break
}
t := auxToType(v.Aux)
dst := v_0
src := v_1
mem := v_2
if !(t.Alignment()%8 == 0) {
break
}
v.reset(OpRISCV64MOVDstore)
v.AuxInt = int32ToAuxInt(8)
v0 := b.NewValue0(v.Pos, OpRISCV64MOVDload, typ.Int64)
v0.AuxInt = int32ToAuxInt(8)
v0.AddArg2(src, mem)
v1 := b.NewValue0(v.Pos, OpRISCV64MOVDstore, types.TypeMem)
v2 := b.NewValue0(v.Pos, OpRISCV64MOVDload, typ.Int64)
v2.AddArg2(src, mem)
v1.AddArg3(dst, v2, mem)
v.AddArg3(dst, v0, v1)
return true
}
// match: (Move [24] {t} dst src mem)
// cond: t.Alignment()%8 == 0
// result: (MOVDstore [16] dst (MOVDload [16] src mem) (MOVDstore [8] dst (MOVDload [8] src mem) (MOVDstore dst (MOVDload src mem) mem)))
for {
if auxIntToInt64(v.AuxInt) != 24 {
break
}
t := auxToType(v.Aux)
dst := v_0
src := v_1
mem := v_2
if !(t.Alignment()%8 == 0) {
break
}
v.reset(OpRISCV64MOVDstore)
v.AuxInt = int32ToAuxInt(16)
v0 := b.NewValue0(v.Pos, OpRISCV64MOVDload, typ.Int64)
v0.AuxInt = int32ToAuxInt(16)
v0.AddArg2(src, mem)
v1 := b.NewValue0(v.Pos, OpRISCV64MOVDstore, types.TypeMem)
v1.AuxInt = int32ToAuxInt(8)
v2 := b.NewValue0(v.Pos, OpRISCV64MOVDload, typ.Int64)
v2.AuxInt = int32ToAuxInt(8)
v2.AddArg2(src, mem)
v3 := b.NewValue0(v.Pos, OpRISCV64MOVDstore, types.TypeMem)
v4 := b.NewValue0(v.Pos, OpRISCV64MOVDload, typ.Int64)
v4.AddArg2(src, mem)
v3.AddArg3(dst, v4, mem)
v1.AddArg3(dst, v2, v3)
v.AddArg3(dst, v0, v1)
return true
}
// match: (Move [32] {t} dst src mem)
// cond: t.Alignment()%8 == 0
// result: (MOVDstore [24] dst (MOVDload [24] src mem) (MOVDstore [16] dst (MOVDload [16] src mem) (MOVDstore [8] dst (MOVDload [8] src mem) (MOVDstore dst (MOVDload src mem) mem))))
for {
if auxIntToInt64(v.AuxInt) != 32 {
break
}
t := auxToType(v.Aux)
dst := v_0
src := v_1
mem := v_2
if !(t.Alignment()%8 == 0) {
break
}
v.reset(OpRISCV64MOVDstore)
v.AuxInt = int32ToAuxInt(24)
v0 := b.NewValue0(v.Pos, OpRISCV64MOVDload, typ.Int64)
v0.AuxInt = int32ToAuxInt(24)
v0.AddArg2(src, mem)
v1 := b.NewValue0(v.Pos, OpRISCV64MOVDstore, types.TypeMem)
v1.AuxInt = int32ToAuxInt(16)
v2 := b.NewValue0(v.Pos, OpRISCV64MOVDload, typ.Int64)
v2.AuxInt = int32ToAuxInt(16)
v2.AddArg2(src, mem)
v3 := b.NewValue0(v.Pos, OpRISCV64MOVDstore, types.TypeMem)
v3.AuxInt = int32ToAuxInt(8)
v4 := b.NewValue0(v.Pos, OpRISCV64MOVDload, typ.Int64)
v4.AuxInt = int32ToAuxInt(8)
v4.AddArg2(src, mem)
v5 := b.NewValue0(v.Pos, OpRISCV64MOVDstore, types.TypeMem)
v6 := b.NewValue0(v.Pos, OpRISCV64MOVDload, typ.Int64)
v6.AddArg2(src, mem)
v5.AddArg3(dst, v6, mem)
v3.AddArg3(dst, v4, v5)
v1.AddArg3(dst, v2, v3)
v.AddArg3(dst, v0, v1)
return true
}
// match: (Move [s] {t} dst src mem)
// cond: s%8 == 0 && s >= 16 && s <= 8*128 && t.Alignment()%8 == 0 && !config.noDuffDevice && logLargeCopy(v, s)
// cond: s%8 == 0 && s <= 8*128 && t.Alignment()%8 == 0 && !config.noDuffDevice && logLargeCopy(v, s)
// result: (DUFFCOPY [16 * (128 - s/8)] dst src mem)
for {
s := auxIntToInt64(v.AuxInt)
@ -2025,7 +2373,7 @@ func rewriteValueRISCV64_OpMove(v *Value) bool {
dst := v_0
src := v_1
mem := v_2
if !(s%8 == 0 && s >= 16 && s <= 8*128 && t.Alignment()%8 == 0 && !config.noDuffDevice && logLargeCopy(v, s)) {
if !(s%8 == 0 && s <= 8*128 && t.Alignment()%8 == 0 && !config.noDuffDevice && logLargeCopy(v, s)) {
break
}
v.reset(OpRISCV64DUFFCOPY)
@ -5747,7 +6095,7 @@ func rewriteValueRISCV64_OpZero(v *Value) bool {
return true
}
// match: (Zero [1] ptr mem)
// result: (MOVBstore ptr (MOVBconst) mem)
// result: (MOVBstore ptr (MOVBconst [0]) mem)
for {
if auxIntToInt64(v.AuxInt) != 1 {
break
@ -5756,57 +6104,333 @@ func rewriteValueRISCV64_OpZero(v *Value) bool {
mem := v_1
v.reset(OpRISCV64MOVBstore)
v0 := b.NewValue0(v.Pos, OpRISCV64MOVBconst, typ.UInt8)
v0.AuxInt = int8ToAuxInt(0)
v.AddArg3(ptr, v0, mem)
return true
}
// match: (Zero [2] {t} ptr mem)
// cond: t.Alignment()%2 == 0
// result: (MOVHstore ptr (MOVHconst [0]) mem)
for {
if auxIntToInt64(v.AuxInt) != 2 {
break
}
t := auxToType(v.Aux)
ptr := v_0
mem := v_1
if !(t.Alignment()%2 == 0) {
break
}
v.reset(OpRISCV64MOVHstore)
v0 := b.NewValue0(v.Pos, OpRISCV64MOVHconst, typ.UInt16)
v0.AuxInt = int16ToAuxInt(0)
v.AddArg3(ptr, v0, mem)
return true
}
// match: (Zero [2] ptr mem)
// result: (MOVHstore ptr (MOVHconst) mem)
// result: (MOVBstore [1] ptr (MOVBconst [0]) (MOVBstore ptr (MOVBconst [0]) mem))
for {
if auxIntToInt64(v.AuxInt) != 2 {
break
}
ptr := v_0
mem := v_1
v.reset(OpRISCV64MOVHstore)
v0 := b.NewValue0(v.Pos, OpRISCV64MOVHconst, typ.UInt16)
v.reset(OpRISCV64MOVBstore)
v.AuxInt = int32ToAuxInt(1)
v0 := b.NewValue0(v.Pos, OpRISCV64MOVBconst, typ.UInt8)
v0.AuxInt = int8ToAuxInt(0)
v1 := b.NewValue0(v.Pos, OpRISCV64MOVBstore, types.TypeMem)
v1.AddArg3(ptr, v0, mem)
v.AddArg3(ptr, v0, v1)
return true
}
// match: (Zero [4] {t} ptr mem)
// cond: t.Alignment()%4 == 0
// result: (MOVWstore ptr (MOVWconst [0]) mem)
for {
if auxIntToInt64(v.AuxInt) != 4 {
break
}
t := auxToType(v.Aux)
ptr := v_0
mem := v_1
if !(t.Alignment()%4 == 0) {
break
}
v.reset(OpRISCV64MOVWstore)
v0 := b.NewValue0(v.Pos, OpRISCV64MOVWconst, typ.UInt32)
v0.AuxInt = int32ToAuxInt(0)
v.AddArg3(ptr, v0, mem)
return true
}
// match: (Zero [4] {t} ptr mem)
// cond: t.Alignment()%2 == 0
// result: (MOVHstore [2] ptr (MOVHconst [0]) (MOVHstore ptr (MOVHconst [0]) mem))
for {
if auxIntToInt64(v.AuxInt) != 4 {
break
}
t := auxToType(v.Aux)
ptr := v_0
mem := v_1
if !(t.Alignment()%2 == 0) {
break
}
v.reset(OpRISCV64MOVHstore)
v.AuxInt = int32ToAuxInt(2)
v0 := b.NewValue0(v.Pos, OpRISCV64MOVHconst, typ.UInt16)
v0.AuxInt = int16ToAuxInt(0)
v1 := b.NewValue0(v.Pos, OpRISCV64MOVHstore, types.TypeMem)
v1.AddArg3(ptr, v0, mem)
v.AddArg3(ptr, v0, v1)
return true
}
// match: (Zero [4] ptr mem)
// result: (MOVWstore ptr (MOVWconst) mem)
// result: (MOVBstore [3] ptr (MOVBconst [0]) (MOVBstore [2] ptr (MOVBconst [0]) (MOVBstore [1] ptr (MOVBconst [0]) (MOVBstore ptr (MOVBconst [0]) mem))))
for {
if auxIntToInt64(v.AuxInt) != 4 {
break
}
ptr := v_0
mem := v_1
v.reset(OpRISCV64MOVWstore)
v0 := b.NewValue0(v.Pos, OpRISCV64MOVWconst, typ.UInt32)
v.AddArg3(ptr, v0, mem)
v.reset(OpRISCV64MOVBstore)
v.AuxInt = int32ToAuxInt(3)
v0 := b.NewValue0(v.Pos, OpRISCV64MOVBconst, typ.UInt8)
v0.AuxInt = int8ToAuxInt(0)
v1 := b.NewValue0(v.Pos, OpRISCV64MOVBstore, types.TypeMem)
v1.AuxInt = int32ToAuxInt(2)
v2 := b.NewValue0(v.Pos, OpRISCV64MOVBstore, types.TypeMem)
v2.AuxInt = int32ToAuxInt(1)
v3 := b.NewValue0(v.Pos, OpRISCV64MOVBstore, types.TypeMem)
v3.AddArg3(ptr, v0, mem)
v2.AddArg3(ptr, v0, v3)
v1.AddArg3(ptr, v0, v2)
v.AddArg3(ptr, v0, v1)
return true
}
// match: (Zero [8] ptr mem)
// result: (MOVDstore ptr (MOVDconst) mem)
// match: (Zero [8] {t} ptr mem)
// cond: t.Alignment()%8 == 0
// result: (MOVDstore ptr (MOVDconst [0]) mem)
for {
if auxIntToInt64(v.AuxInt) != 8 {
break
}
t := auxToType(v.Aux)
ptr := v_0
mem := v_1
if !(t.Alignment()%8 == 0) {
break
}
v.reset(OpRISCV64MOVDstore)
v0 := b.NewValue0(v.Pos, OpRISCV64MOVDconst, typ.UInt64)
v0.AuxInt = int64ToAuxInt(0)
v.AddArg3(ptr, v0, mem)
return true
}
// match: (Zero [8] {t} ptr mem)
// cond: t.Alignment()%4 == 0
// result: (MOVWstore [4] ptr (MOVWconst [0]) (MOVWstore ptr (MOVWconst [0]) mem))
for {
if auxIntToInt64(v.AuxInt) != 8 {
break
}
t := auxToType(v.Aux)
ptr := v_0
mem := v_1
if !(t.Alignment()%4 == 0) {
break
}
v.reset(OpRISCV64MOVWstore)
v.AuxInt = int32ToAuxInt(4)
v0 := b.NewValue0(v.Pos, OpRISCV64MOVWconst, typ.UInt32)
v0.AuxInt = int32ToAuxInt(0)
v1 := b.NewValue0(v.Pos, OpRISCV64MOVWstore, types.TypeMem)
v1.AddArg3(ptr, v0, mem)
v.AddArg3(ptr, v0, v1)
return true
}
// match: (Zero [8] {t} ptr mem)
// cond: t.Alignment()%2 == 0
// result: (MOVHstore [6] ptr (MOVHconst [0]) (MOVHstore [4] ptr (MOVHconst [0]) (MOVHstore [2] ptr (MOVHconst [0]) (MOVHstore ptr (MOVHconst [0]) mem))))
for {
if auxIntToInt64(v.AuxInt) != 8 {
break
}
t := auxToType(v.Aux)
ptr := v_0
mem := v_1
if !(t.Alignment()%2 == 0) {
break
}
v.reset(OpRISCV64MOVHstore)
v.AuxInt = int32ToAuxInt(6)
v0 := b.NewValue0(v.Pos, OpRISCV64MOVHconst, typ.UInt16)
v0.AuxInt = int16ToAuxInt(0)
v1 := b.NewValue0(v.Pos, OpRISCV64MOVHstore, types.TypeMem)
v1.AuxInt = int32ToAuxInt(4)
v2 := b.NewValue0(v.Pos, OpRISCV64MOVHstore, types.TypeMem)
v2.AuxInt = int32ToAuxInt(2)
v3 := b.NewValue0(v.Pos, OpRISCV64MOVHstore, types.TypeMem)
v3.AddArg3(ptr, v0, mem)
v2.AddArg3(ptr, v0, v3)
v1.AddArg3(ptr, v0, v2)
v.AddArg3(ptr, v0, v1)
return true
}
// match: (Zero [3] ptr mem)
// result: (MOVBstore [2] ptr (MOVBconst [0]) (MOVBstore [1] ptr (MOVBconst [0]) (MOVBstore ptr (MOVBconst [0]) mem)))
for {
if auxIntToInt64(v.AuxInt) != 3 {
break
}
ptr := v_0
mem := v_1
v.reset(OpRISCV64MOVBstore)
v.AuxInt = int32ToAuxInt(2)
v0 := b.NewValue0(v.Pos, OpRISCV64MOVBconst, typ.UInt8)
v0.AuxInt = int8ToAuxInt(0)
v1 := b.NewValue0(v.Pos, OpRISCV64MOVBstore, types.TypeMem)
v1.AuxInt = int32ToAuxInt(1)
v2 := b.NewValue0(v.Pos, OpRISCV64MOVBstore, types.TypeMem)
v2.AddArg3(ptr, v0, mem)
v1.AddArg3(ptr, v0, v2)
v.AddArg3(ptr, v0, v1)
return true
}
// match: (Zero [6] {t} ptr mem)
// cond: t.Alignment()%2 == 0
// result: (MOVHstore [4] ptr (MOVHconst [0]) (MOVHstore [2] ptr (MOVHconst [0]) (MOVHstore ptr (MOVHconst [0]) mem)))
for {
if auxIntToInt64(v.AuxInt) != 6 {
break
}
t := auxToType(v.Aux)
ptr := v_0
mem := v_1
if !(t.Alignment()%2 == 0) {
break
}
v.reset(OpRISCV64MOVHstore)
v.AuxInt = int32ToAuxInt(4)
v0 := b.NewValue0(v.Pos, OpRISCV64MOVHconst, typ.UInt16)
v0.AuxInt = int16ToAuxInt(0)
v1 := b.NewValue0(v.Pos, OpRISCV64MOVHstore, types.TypeMem)
v1.AuxInt = int32ToAuxInt(2)
v2 := b.NewValue0(v.Pos, OpRISCV64MOVHstore, types.TypeMem)
v2.AddArg3(ptr, v0, mem)
v1.AddArg3(ptr, v0, v2)
v.AddArg3(ptr, v0, v1)
return true
}
// match: (Zero [12] {t} ptr mem)
// cond: t.Alignment()%4 == 0
// result: (MOVWstore [8] ptr (MOVWconst [0]) (MOVWstore [4] ptr (MOVWconst [0]) (MOVWstore ptr (MOVWconst [0]) mem)))
for {
if auxIntToInt64(v.AuxInt) != 12 {
break
}
t := auxToType(v.Aux)
ptr := v_0
mem := v_1
if !(t.Alignment()%4 == 0) {
break
}
v.reset(OpRISCV64MOVWstore)
v.AuxInt = int32ToAuxInt(8)
v0 := b.NewValue0(v.Pos, OpRISCV64MOVWconst, typ.UInt32)
v0.AuxInt = int32ToAuxInt(0)
v1 := b.NewValue0(v.Pos, OpRISCV64MOVWstore, types.TypeMem)
v1.AuxInt = int32ToAuxInt(4)
v2 := b.NewValue0(v.Pos, OpRISCV64MOVWstore, types.TypeMem)
v2.AddArg3(ptr, v0, mem)
v1.AddArg3(ptr, v0, v2)
v.AddArg3(ptr, v0, v1)
return true
}
// match: (Zero [16] {t} ptr mem)
// cond: t.Alignment()%8 == 0
// result: (MOVDstore [8] ptr (MOVDconst [0]) (MOVDstore ptr (MOVDconst [0]) mem))
for {
if auxIntToInt64(v.AuxInt) != 16 {
break
}
t := auxToType(v.Aux)
ptr := v_0
mem := v_1
if !(t.Alignment()%8 == 0) {
break
}
v.reset(OpRISCV64MOVDstore)
v.AuxInt = int32ToAuxInt(8)
v0 := b.NewValue0(v.Pos, OpRISCV64MOVDconst, typ.UInt64)
v0.AuxInt = int64ToAuxInt(0)
v1 := b.NewValue0(v.Pos, OpRISCV64MOVDstore, types.TypeMem)
v1.AddArg3(ptr, v0, mem)
v.AddArg3(ptr, v0, v1)
return true
}
// match: (Zero [24] {t} ptr mem)
// cond: t.Alignment()%8 == 0
// result: (MOVDstore [16] ptr (MOVDconst [0]) (MOVDstore [8] ptr (MOVDconst [0]) (MOVDstore ptr (MOVDconst [0]) mem)))
for {
if auxIntToInt64(v.AuxInt) != 24 {
break
}
t := auxToType(v.Aux)
ptr := v_0
mem := v_1
if !(t.Alignment()%8 == 0) {
break
}
v.reset(OpRISCV64MOVDstore)
v.AuxInt = int32ToAuxInt(16)
v0 := b.NewValue0(v.Pos, OpRISCV64MOVDconst, typ.UInt64)
v0.AuxInt = int64ToAuxInt(0)
v1 := b.NewValue0(v.Pos, OpRISCV64MOVDstore, types.TypeMem)
v1.AuxInt = int32ToAuxInt(8)
v2 := b.NewValue0(v.Pos, OpRISCV64MOVDstore, types.TypeMem)
v2.AddArg3(ptr, v0, mem)
v1.AddArg3(ptr, v0, v2)
v.AddArg3(ptr, v0, v1)
return true
}
// match: (Zero [32] {t} ptr mem)
// cond: t.Alignment()%8 == 0
// result: (MOVDstore [24] ptr (MOVDconst [0]) (MOVDstore [16] ptr (MOVDconst [0]) (MOVDstore [8] ptr (MOVDconst [0]) (MOVDstore ptr (MOVDconst [0]) mem))))
for {
if auxIntToInt64(v.AuxInt) != 32 {
break
}
t := auxToType(v.Aux)
ptr := v_0
mem := v_1
if !(t.Alignment()%8 == 0) {
break
}
v.reset(OpRISCV64MOVDstore)
v.AuxInt = int32ToAuxInt(24)
v0 := b.NewValue0(v.Pos, OpRISCV64MOVDconst, typ.UInt64)
v0.AuxInt = int64ToAuxInt(0)
v1 := b.NewValue0(v.Pos, OpRISCV64MOVDstore, types.TypeMem)
v1.AuxInt = int32ToAuxInt(16)
v2 := b.NewValue0(v.Pos, OpRISCV64MOVDstore, types.TypeMem)
v2.AuxInt = int32ToAuxInt(8)
v3 := b.NewValue0(v.Pos, OpRISCV64MOVDstore, types.TypeMem)
v3.AddArg3(ptr, v0, mem)
v2.AddArg3(ptr, v0, v3)
v1.AddArg3(ptr, v0, v2)
v.AddArg3(ptr, v0, v1)
return true
}
// match: (Zero [s] {t} ptr mem)
// cond: s%8 == 0 && s >= 16 && s <= 8*128 && t.Alignment()%8 == 0 && !config.noDuffDevice
// cond: s%8 == 0 && s <= 8*128 && t.Alignment()%8 == 0 && !config.noDuffDevice
// result: (DUFFZERO [8 * (128 - s/8)] ptr mem)
for {
s := auxIntToInt64(v.AuxInt)
t := auxToType(v.Aux)
ptr := v_0
mem := v_1
if !(s%8 == 0 && s >= 16 && s <= 8*128 && t.Alignment()%8 == 0 && !config.noDuffDevice) {
if !(s%8 == 0 && s <= 8*128 && t.Alignment()%8 == 0 && !config.noDuffDevice) {
break
}
v.reset(OpRISCV64DUFFZERO)