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cmd/compile: combine SHLQ into loads and stores

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Very common, cuts about 70k from pkg/tools/linux_amd64/* binaries.

Change-Id: Ied0c049e56e56a56810c781435d79027fbcaf274
Reviewed-on: https://go-review.googlesource.com/21374
Reviewed-by: Keith Randall <khr@golang.org>
Run-TryBot: Alexandru Moșoi <alexandru@mosoi.ro>
This commit is contained in:
Alexandru Moșoi 2016-04-01 00:33:29 +02:00 committed by Alexandru Moșoi
parent 8677cad199
commit ec5083e49b
2 changed files with 234 additions and 0 deletions
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12
src/cmd/compile/internal/ssa/gen/AMD64.rules
View File

@ -883,6 +883,18 @@
(MOVLstoreconst [x] {sym} (ADDQ ptr idx) mem) -> (MOVLstoreconstidx1 [x] {sym} ptr idx mem) (MOVLstoreconst [x] {sym} (ADDQ ptr idx) mem) -> (MOVLstoreconstidx1 [x] {sym} ptr idx mem)
(MOVQstoreconst [x] {sym} (ADDQ ptr idx) mem) -> (MOVQstoreconstidx1 [x] {sym} ptr idx mem) (MOVQstoreconst [x] {sym} (ADDQ ptr idx) mem) -> (MOVQstoreconstidx1 [x] {sym} ptr idx mem)
// combine SHLQ into indexed loads and stores
(MOVWloadidx1 [c] {sym} ptr (SHLQconst [1] idx) mem) -> (MOVWloadidx2 [c] {sym} ptr idx mem)
(MOVLloadidx1 [c] {sym} ptr (SHLQconst [2] idx) mem) -> (MOVLloadidx4 [c] {sym} ptr idx mem)
(MOVQloadidx1 [c] {sym} ptr (SHLQconst [3] idx) mem) -> (MOVQloadidx8 [c] {sym} ptr idx mem)
(MOVWstoreidx1 [c] {sym} ptr (SHLQconst [1] idx) val mem) -> (MOVWstoreidx2 [c] {sym} ptr idx val mem)
(MOVLstoreidx1 [c] {sym} ptr (SHLQconst [2] idx) val mem) -> (MOVLstoreidx4 [c] {sym} ptr idx val mem)
(MOVQstoreidx1 [c] {sym} ptr (SHLQconst [3] idx) val mem) -> (MOVQstoreidx8 [c] {sym} ptr idx val mem)
(MOVWstoreconstidx1 [c] {sym} ptr (SHLQconst [1] idx) mem) -> (MOVWstoreconstidx2 [c] {sym} ptr idx mem)
(MOVLstoreconstidx1 [c] {sym} ptr (SHLQconst [2] idx) mem) -> (MOVLstoreconstidx4 [c] {sym} ptr idx mem)
(MOVQstoreconstidx1 [c] {sym} ptr (SHLQconst [3] idx) mem) -> (MOVQstoreconstidx8 [c] {sym} ptr idx mem)
// combine ADDQ into indexed loads and stores // combine ADDQ into indexed loads and stores
(MOVBloadidx1 [c] {sym} (ADDQconst [d] ptr) idx mem) -> (MOVBloadidx1 [c+d] {sym} ptr idx mem) (MOVBloadidx1 [c] {sym} (ADDQconst [d] ptr) idx mem) -> (MOVBloadidx1 [c+d] {sym} ptr idx mem)
(MOVWloadidx1 [c] {sym} (ADDQconst [d] ptr) idx mem) -> (MOVWloadidx1 [c+d] {sym} ptr idx mem) (MOVWloadidx1 [c] {sym} (ADDQconst [d] ptr) idx mem) -> (MOVWloadidx1 [c+d] {sym} ptr idx mem)

222
src/cmd/compile/internal/ssa/rewriteAMD64.go
View File

@ -7205,6 +7205,30 @@ func rewriteValueAMD64_OpAMD64MOVLload(v *Value, config *Config) bool {
func rewriteValueAMD64_OpAMD64MOVLloadidx1(v *Value, config *Config) bool { func rewriteValueAMD64_OpAMD64MOVLloadidx1(v *Value, config *Config) bool {
b := v.Block b := v.Block
_ = b _ = b
// match: (MOVLloadidx1 [c] {sym} ptr (SHLQconst [2] idx) mem)
// cond:
// result: (MOVLloadidx4 [c] {sym} ptr idx mem)
for {
c := v.AuxInt
sym := v.Aux
ptr := v.Args[0]
v_1 := v.Args[1]
if v_1.Op != OpAMD64SHLQconst {
break
}
if v_1.AuxInt != 2 {
break
}
idx := v_1.Args[0]
mem := v.Args[2]
v.reset(OpAMD64MOVLloadidx4)
v.AuxInt = c
v.Aux = sym
v.AddArg(ptr)
v.AddArg(idx)
v.AddArg(mem)
return true
}
// match: (MOVLloadidx1 [c] {sym} (ADDQconst [d] ptr) idx mem) // match: (MOVLloadidx1 [c] {sym} (ADDQconst [d] ptr) idx mem)
// cond: // cond:
// result: (MOVLloadidx1 [c+d] {sym} ptr idx mem) // result: (MOVLloadidx1 [c+d] {sym} ptr idx mem)
@ -7631,6 +7655,30 @@ func rewriteValueAMD64_OpAMD64MOVLstoreconst(v *Value, config *Config) bool {
func rewriteValueAMD64_OpAMD64MOVLstoreconstidx1(v *Value, config *Config) bool { func rewriteValueAMD64_OpAMD64MOVLstoreconstidx1(v *Value, config *Config) bool {
b := v.Block b := v.Block
_ = b _ = b
// match: (MOVLstoreconstidx1 [c] {sym} ptr (SHLQconst [2] idx) mem)
// cond:
// result: (MOVLstoreconstidx4 [c] {sym} ptr idx mem)
for {
c := v.AuxInt
sym := v.Aux
ptr := v.Args[0]
v_1 := v.Args[1]
if v_1.Op != OpAMD64SHLQconst {
break
}
if v_1.AuxInt != 2 {
break
}
idx := v_1.Args[0]
mem := v.Args[2]
v.reset(OpAMD64MOVLstoreconstidx4)
v.AuxInt = c
v.Aux = sym
v.AddArg(ptr)
v.AddArg(idx)
v.AddArg(mem)
return true
}
// match: (MOVLstoreconstidx1 [x] {sym} (ADDQconst [c] ptr) idx mem) // match: (MOVLstoreconstidx1 [x] {sym} (ADDQconst [c] ptr) idx mem)
// cond: // cond:
// result: (MOVLstoreconstidx1 [ValAndOff(x).add(c)] {sym} ptr idx mem) // result: (MOVLstoreconstidx1 [ValAndOff(x).add(c)] {sym} ptr idx mem)
@ -7729,6 +7777,32 @@ func rewriteValueAMD64_OpAMD64MOVLstoreconstidx4(v *Value, config *Config) bool
func rewriteValueAMD64_OpAMD64MOVLstoreidx1(v *Value, config *Config) bool { func rewriteValueAMD64_OpAMD64MOVLstoreidx1(v *Value, config *Config) bool {
b := v.Block b := v.Block
_ = b _ = b
// match: (MOVLstoreidx1 [c] {sym} ptr (SHLQconst [2] idx) val mem)
// cond:
// result: (MOVLstoreidx4 [c] {sym} ptr idx val mem)
for {
c := v.AuxInt
sym := v.Aux
ptr := v.Args[0]
v_1 := v.Args[1]
if v_1.Op != OpAMD64SHLQconst {
break
}
if v_1.AuxInt != 2 {
break
}
idx := v_1.Args[0]
val := v.Args[2]
mem := v.Args[3]
v.reset(OpAMD64MOVLstoreidx4)
v.AuxInt = c
v.Aux = sym
v.AddArg(ptr)
v.AddArg(idx)
v.AddArg(val)
v.AddArg(mem)
return true
}
// match: (MOVLstoreidx1 [c] {sym} (ADDQconst [d] ptr) idx val mem) // match: (MOVLstoreidx1 [c] {sym} (ADDQconst [d] ptr) idx val mem)
// cond: // cond:
// result: (MOVLstoreidx1 [c+d] {sym} ptr idx val mem) // result: (MOVLstoreidx1 [c+d] {sym} ptr idx val mem)
@ -8094,6 +8168,30 @@ func rewriteValueAMD64_OpAMD64MOVQload(v *Value, config *Config) bool {
func rewriteValueAMD64_OpAMD64MOVQloadidx1(v *Value, config *Config) bool { func rewriteValueAMD64_OpAMD64MOVQloadidx1(v *Value, config *Config) bool {
b := v.Block b := v.Block
_ = b _ = b
// match: (MOVQloadidx1 [c] {sym} ptr (SHLQconst [3] idx) mem)
// cond:
// result: (MOVQloadidx8 [c] {sym} ptr idx mem)
for {
c := v.AuxInt
sym := v.Aux
ptr := v.Args[0]
v_1 := v.Args[1]
if v_1.Op != OpAMD64SHLQconst {
break
}
if v_1.AuxInt != 3 {
break
}
idx := v_1.Args[0]
mem := v.Args[2]
v.reset(OpAMD64MOVQloadidx8)
v.AuxInt = c
v.Aux = sym
v.AddArg(ptr)
v.AddArg(idx)
v.AddArg(mem)
return true
}
// match: (MOVQloadidx1 [c] {sym} (ADDQconst [d] ptr) idx mem) // match: (MOVQloadidx1 [c] {sym} (ADDQconst [d] ptr) idx mem)
// cond: // cond:
// result: (MOVQloadidx1 [c+d] {sym} ptr idx mem) // result: (MOVQloadidx1 [c+d] {sym} ptr idx mem)
@ -8478,6 +8576,30 @@ func rewriteValueAMD64_OpAMD64MOVQstoreconst(v *Value, config *Config) bool {
func rewriteValueAMD64_OpAMD64MOVQstoreconstidx1(v *Value, config *Config) bool { func rewriteValueAMD64_OpAMD64MOVQstoreconstidx1(v *Value, config *Config) bool {
b := v.Block b := v.Block
_ = b _ = b
// match: (MOVQstoreconstidx1 [c] {sym} ptr (SHLQconst [3] idx) mem)
// cond:
// result: (MOVQstoreconstidx8 [c] {sym} ptr idx mem)
for {
c := v.AuxInt
sym := v.Aux
ptr := v.Args[0]
v_1 := v.Args[1]
if v_1.Op != OpAMD64SHLQconst {
break
}
if v_1.AuxInt != 3 {
break
}
idx := v_1.Args[0]
mem := v.Args[2]
v.reset(OpAMD64MOVQstoreconstidx8)
v.AuxInt = c
v.Aux = sym
v.AddArg(ptr)
v.AddArg(idx)
v.AddArg(mem)
return true
}
// match: (MOVQstoreconstidx1 [x] {sym} (ADDQconst [c] ptr) idx mem) // match: (MOVQstoreconstidx1 [x] {sym} (ADDQconst [c] ptr) idx mem)
// cond: // cond:
// result: (MOVQstoreconstidx1 [ValAndOff(x).add(c)] {sym} ptr idx mem) // result: (MOVQstoreconstidx1 [ValAndOff(x).add(c)] {sym} ptr idx mem)
@ -8576,6 +8698,32 @@ func rewriteValueAMD64_OpAMD64MOVQstoreconstidx8(v *Value, config *Config) bool
func rewriteValueAMD64_OpAMD64MOVQstoreidx1(v *Value, config *Config) bool { func rewriteValueAMD64_OpAMD64MOVQstoreidx1(v *Value, config *Config) bool {
b := v.Block b := v.Block
_ = b _ = b
// match: (MOVQstoreidx1 [c] {sym} ptr (SHLQconst [3] idx) val mem)
// cond:
// result: (MOVQstoreidx8 [c] {sym} ptr idx val mem)
for {
c := v.AuxInt
sym := v.Aux
ptr := v.Args[0]
v_1 := v.Args[1]
if v_1.Op != OpAMD64SHLQconst {
break
}
if v_1.AuxInt != 3 {
break
}
idx := v_1.Args[0]
val := v.Args[2]
mem := v.Args[3]
v.reset(OpAMD64MOVQstoreidx8)
v.AuxInt = c
v.Aux = sym
v.AddArg(ptr)
v.AddArg(idx)
v.AddArg(val)
v.AddArg(mem)
return true
}
// match: (MOVQstoreidx1 [c] {sym} (ADDQconst [d] ptr) idx val mem) // match: (MOVQstoreidx1 [c] {sym} (ADDQconst [d] ptr) idx val mem)
// cond: // cond:
// result: (MOVQstoreidx1 [c+d] {sym} ptr idx val mem) // result: (MOVQstoreidx1 [c+d] {sym} ptr idx val mem)
@ -9949,6 +10097,30 @@ func rewriteValueAMD64_OpAMD64MOVWload(v *Value, config *Config) bool {
func rewriteValueAMD64_OpAMD64MOVWloadidx1(v *Value, config *Config) bool { func rewriteValueAMD64_OpAMD64MOVWloadidx1(v *Value, config *Config) bool {
b := v.Block b := v.Block
_ = b _ = b
// match: (MOVWloadidx1 [c] {sym} ptr (SHLQconst [1] idx) mem)
// cond:
// result: (MOVWloadidx2 [c] {sym} ptr idx mem)
for {
c := v.AuxInt
sym := v.Aux
ptr := v.Args[0]
v_1 := v.Args[1]
if v_1.Op != OpAMD64SHLQconst {
break
}
if v_1.AuxInt != 1 {
break
}
idx := v_1.Args[0]
mem := v.Args[2]
v.reset(OpAMD64MOVWloadidx2)
v.AuxInt = c
v.Aux = sym
v.AddArg(ptr)
v.AddArg(idx)
v.AddArg(mem)
return true
}
// match: (MOVWloadidx1 [c] {sym} (ADDQconst [d] ptr) idx mem) // match: (MOVWloadidx1 [c] {sym} (ADDQconst [d] ptr) idx mem)
// cond: // cond:
// result: (MOVWloadidx1 [c+d] {sym} ptr idx mem) // result: (MOVWloadidx1 [c+d] {sym} ptr idx mem)
@ -10375,6 +10547,30 @@ func rewriteValueAMD64_OpAMD64MOVWstoreconst(v *Value, config *Config) bool {
func rewriteValueAMD64_OpAMD64MOVWstoreconstidx1(v *Value, config *Config) bool { func rewriteValueAMD64_OpAMD64MOVWstoreconstidx1(v *Value, config *Config) bool {
b := v.Block b := v.Block
_ = b _ = b
// match: (MOVWstoreconstidx1 [c] {sym} ptr (SHLQconst [1] idx) mem)
// cond:
// result: (MOVWstoreconstidx2 [c] {sym} ptr idx mem)
for {
c := v.AuxInt
sym := v.Aux
ptr := v.Args[0]
v_1 := v.Args[1]
if v_1.Op != OpAMD64SHLQconst {
break
}
if v_1.AuxInt != 1 {
break
}
idx := v_1.Args[0]
mem := v.Args[2]
v.reset(OpAMD64MOVWstoreconstidx2)
v.AuxInt = c
v.Aux = sym
v.AddArg(ptr)
v.AddArg(idx)
v.AddArg(mem)
return true
}
// match: (MOVWstoreconstidx1 [x] {sym} (ADDQconst [c] ptr) idx mem) // match: (MOVWstoreconstidx1 [x] {sym} (ADDQconst [c] ptr) idx mem)
// cond: // cond:
// result: (MOVWstoreconstidx1 [ValAndOff(x).add(c)] {sym} ptr idx mem) // result: (MOVWstoreconstidx1 [ValAndOff(x).add(c)] {sym} ptr idx mem)
@ -10473,6 +10669,32 @@ func rewriteValueAMD64_OpAMD64MOVWstoreconstidx2(v *Value, config *Config) bool
func rewriteValueAMD64_OpAMD64MOVWstoreidx1(v *Value, config *Config) bool { func rewriteValueAMD64_OpAMD64MOVWstoreidx1(v *Value, config *Config) bool {
b := v.Block b := v.Block
_ = b _ = b
// match: (MOVWstoreidx1 [c] {sym} ptr (SHLQconst [1] idx) val mem)
// cond:
// result: (MOVWstoreidx2 [c] {sym} ptr idx val mem)
for {
c := v.AuxInt
sym := v.Aux
ptr := v.Args[0]
v_1 := v.Args[1]
if v_1.Op != OpAMD64SHLQconst {
break
}
if v_1.AuxInt != 1 {
break
}
idx := v_1.Args[0]
val := v.Args[2]
mem := v.Args[3]
v.reset(OpAMD64MOVWstoreidx2)
v.AuxInt = c
v.Aux = sym
v.AddArg(ptr)
v.AddArg(idx)
v.AddArg(val)
v.AddArg(mem)
return true
}
// match: (MOVWstoreidx1 [c] {sym} (ADDQconst [d] ptr) idx val mem) // match: (MOVWstoreidx1 [c] {sym} (ADDQconst [d] ptr) idx val mem)
// cond: // cond:
// result: (MOVWstoreidx1 [c+d] {sym} ptr idx val mem) // result: (MOVWstoreidx1 [c+d] {sym} ptr idx val mem)