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cmd/compile: intrinsify math.Sqrt on mips64

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Fixes #24006

Change-Id: Ic1438b121fe705f9a6e3ed8340882e9dfd26ecf7
Reviewed-on: https://go-review.googlesource.com/95916
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
This commit is contained in:
Alberto Donizetti 2018-02-21 17:48:33 +01:00 committed by Cherry Zhang
parent 8993e16932
commit 6aeddb1b57
6 changed files with 36 additions and 5 deletions
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2
src/cmd/compile/internal/gc/ssa.go
View File

@ -2913,7 +2913,7 @@ func init() {
func(s *state, n *Node, args []*ssa.Value) *ssa.Value {
return s.newValue1(ssa.OpSqrt, types.Types[TFLOAT64], args[0])
},
sys.AMD64, sys.ARM, sys.ARM64, sys.MIPS, sys.PPC64, sys.S390X)
sys.AMD64, sys.ARM, sys.ARM64, sys.MIPS, sys.MIPS64, sys.PPC64, sys.S390X)
addF("math", "Trunc",
func(s *state, n *Node, args []*ssa.Value) *ssa.Value {
return s.newValue1(ssa.OpTrunc, types.Types[TFLOAT64], args[0])

3
src/cmd/compile/internal/mips64/ssa.go
View File

@ -354,7 +354,8 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
ssa.OpMIPS64MOVFD,
ssa.OpMIPS64MOVDF,
ssa.OpMIPS64NEGF,
ssa.OpMIPS64NEGD:
ssa.OpMIPS64NEGD,
ssa.OpMIPS64SQRTD:
p := s.Prog(v.Op.Asm())
p.From.Type = obj.TYPE_REG
p.From.Reg = v.Args[0].Reg()

2
src/cmd/compile/internal/ssa/gen/MIPS64.rules
View File

@ -111,6 +111,8 @@
(Com(64|32|16|8) x) -> (NOR (MOVVconst [0]) x)
(Sqrt x) -> (SQRTD x)
// boolean ops -- booleans are represented with 0=false, 1=true
(AndB x y) -> (AND x y)
(OrB x y) -> (OR x y)

7
src/cmd/compile/internal/ssa/gen/MIPS64Ops.go
View File

@ -189,9 +189,10 @@ func init() {
{name: "NOR", argLength: 2, reg: gp21, asm: "NOR", commutative: true}, // ^(arg0 | arg1)
{name: "NORconst", argLength: 1, reg: gp11, asm: "NOR", aux: "Int64"}, // ^(arg0 | auxInt)
{name: "NEGV", argLength: 1, reg: gp11}, // -arg0
{name: "NEGF", argLength: 1, reg: fp11, asm: "NEGF"}, // -arg0, float32
{name: "NEGD", argLength: 1, reg: fp11, asm: "NEGD"}, // -arg0, float64
{name: "NEGV", argLength: 1, reg: gp11}, // -arg0
{name: "NEGF", argLength: 1, reg: fp11, asm: "NEGF"}, // -arg0, float32
{name: "NEGD", argLength: 1, reg: fp11, asm: "NEGD"}, // -arg0, float64
{name: "SQRTD", argLength: 1, reg: fp11, asm: "SQRTD"}, // sqrt(arg0), float64
// shifts
{name: "SLLV", argLength: 2, reg: gp21, asm: "SLLV"}, // arg0 << arg1, shift amount is mod 64

14
src/cmd/compile/internal/ssa/opGen.go
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@ -1272,6 +1272,7 @@ const (
OpMIPS64NEGV
OpMIPS64NEGF
OpMIPS64NEGD
OpMIPS64SQRTD
OpMIPS64SLLV
OpMIPS64SLLVconst
OpMIPS64SRLV
@ -16320,6 +16321,19 @@ var opcodeTable = [...]opInfo{
},
},
},
{
name: "SQRTD",
argLen: 1,
asm: mips.ASQRTD,
reg: regInfo{
inputs: []inputInfo{
{0, 1152921504338411520}, // F0 F1 F2 F3 F4 F5 F6 F7 F8 F9 F10 F11 F12 F13 F14 F15 F16 F17 F18 F19 F20 F21 F22 F23 F24 F25 F26 F27 F28 F29 F30 F31
},
outputs: []outputInfo{
{0, 1152921504338411520}, // F0 F1 F2 F3 F4 F5 F6 F7 F8 F9 F10 F11 F12 F13 F14 F15 F16 F17 F18 F19 F20 F21 F22 F23 F24 F25 F26 F27 F28 F29 F30 F31
},
},
},
{
name: "SLLV",
argLen: 2,

13
src/cmd/compile/internal/ssa/rewriteMIPS64.go
View File

@ -551,6 +551,8 @@ func rewriteValueMIPS64(v *Value) bool {
return rewriteValueMIPS64_OpSignExt8to64_0(v)
case OpSlicemask:
return rewriteValueMIPS64_OpSlicemask_0(v)
case OpSqrt:
return rewriteValueMIPS64_OpSqrt_0(v)
case OpStaticCall:
return rewriteValueMIPS64_OpStaticCall_0(v)
case OpStore:
@ -9578,6 +9580,17 @@ func rewriteValueMIPS64_OpSlicemask_0(v *Value) bool {
return true
}
}
func rewriteValueMIPS64_OpSqrt_0(v *Value) bool {
// match: (Sqrt x)
// cond:
// result: (SQRTD x)
for {
x := v.Args[0]
v.reset(OpMIPS64SQRTD)
v.AddArg(x)
return true
}
}
func rewriteValueMIPS64_OpStaticCall_0(v *Value) bool {
// match: (StaticCall [argwid] {target} mem)
// cond: