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cmd/compile: add 32 bit float registers/variables on wasm
Before this change, wasm only used float variables with a size of 64 bit and applied rounding to 32 bit precision where necessary. This change adds proper 32 bit float variables. Reduces the size of pkg/js_wasm by 254 bytes. Change-Id: Ieabe846a8cb283d66def3cdf11e2523b3b31f345 Reviewed-on: https://go-review.googlesource.com/c/go/+/195117 Reviewed-by: Cherry Zhang <cherryyz@google.com>
This commit is contained in:
Richard Musiol
Richard Musiol
parent
d6c2f1e90e
commit
1c50fcf853
10 changed files with 802 additions and 375 deletions
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@ -176,18 +176,12 @@ func ssaGenValue(s *gc.SSAGenState, v *ssa.Value) {
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case ssa.OpWasmI64Store8, ssa.OpWasmI64Store16, ssa.OpWasmI64Store32, ssa.OpWasmI64Store, ssa.OpWasmF32Store, ssa.OpWasmF64Store:
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getValue32(s, v.Args[0])
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getValue64(s, v.Args[1])
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if v.Op == ssa.OpWasmF32Store {
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s.Prog(wasm.AF32DemoteF64)
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}
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p := s.Prog(v.Op.Asm())
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p.To = obj.Addr{Type: obj.TYPE_CONST, Offset: v.AuxInt}
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case ssa.OpStoreReg:
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getReg(s, wasm.REG_SP)
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getValue64(s, v.Args[0])
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if v.Type.Etype == types.TFLOAT32 {
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s.Prog(wasm.AF32DemoteF64)
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}
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p := s.Prog(storeOp(v.Type))
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gc.AddrAuto(&p.To, v)
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@ -246,11 +240,6 @@ func ssaGenValueOnStack(s *gc.SSAGenState, v *ssa.Value, extend bool) {
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panic("wasm: bad LoweredAddr")
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}
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case ssa.OpWasmLoweredRound32F:
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getValue64(s, v.Args[0])
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s.Prog(wasm.AF32DemoteF64)
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s.Prog(wasm.AF64PromoteF32)
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case ssa.OpWasmLoweredConvert:
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getValue64(s, v.Args[0])
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@ -268,6 +257,9 @@ func ssaGenValueOnStack(s *gc.SSAGenState, v *ssa.Value, extend bool) {
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case ssa.OpWasmI64Const:
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i64Const(s, v.AuxInt)
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case ssa.OpWasmF32Const:
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f32Const(s, v.AuxFloat())
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case ssa.OpWasmF64Const:
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f64Const(s, v.AuxFloat())
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@ -275,9 +267,6 @@ func ssaGenValueOnStack(s *gc.SSAGenState, v *ssa.Value, extend bool) {
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getValue32(s, v.Args[0])
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p := s.Prog(v.Op.Asm())
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p.From = obj.Addr{Type: obj.TYPE_CONST, Offset: v.AuxInt}
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if v.Op == ssa.OpWasmF32Load {
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s.Prog(wasm.AF64PromoteF32)
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}
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case ssa.OpWasmI64Eqz:
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getValue64(s, v.Args[0])
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@ -286,7 +275,9 @@ func ssaGenValueOnStack(s *gc.SSAGenState, v *ssa.Value, extend bool) {
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s.Prog(wasm.AI64ExtendI32U)
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}
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case ssa.OpWasmI64Eq, ssa.OpWasmI64Ne, ssa.OpWasmI64LtS, ssa.OpWasmI64LtU, ssa.OpWasmI64GtS, ssa.OpWasmI64GtU, ssa.OpWasmI64LeS, ssa.OpWasmI64LeU, ssa.OpWasmI64GeS, ssa.OpWasmI64GeU, ssa.OpWasmF64Eq, ssa.OpWasmF64Ne, ssa.OpWasmF64Lt, ssa.OpWasmF64Gt, ssa.OpWasmF64Le, ssa.OpWasmF64Ge:
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case ssa.OpWasmI64Eq, ssa.OpWasmI64Ne, ssa.OpWasmI64LtS, ssa.OpWasmI64LtU, ssa.OpWasmI64GtS, ssa.OpWasmI64GtU, ssa.OpWasmI64LeS, ssa.OpWasmI64LeU, ssa.OpWasmI64GeS, ssa.OpWasmI64GeU,
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ssa.OpWasmF32Eq, ssa.OpWasmF32Ne, ssa.OpWasmF32Lt, ssa.OpWasmF32Gt, ssa.OpWasmF32Le, ssa.OpWasmF32Ge,
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ssa.OpWasmF64Eq, ssa.OpWasmF64Ne, ssa.OpWasmF64Lt, ssa.OpWasmF64Gt, ssa.OpWasmF64Le, ssa.OpWasmF64Ge:
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getValue64(s, v.Args[0])
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getValue64(s, v.Args[1])
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s.Prog(v.Op.Asm())
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@ -294,7 +285,9 @@ func ssaGenValueOnStack(s *gc.SSAGenState, v *ssa.Value, extend bool) {
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s.Prog(wasm.AI64ExtendI32U)
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}
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case ssa.OpWasmI64Add, ssa.OpWasmI64Sub, ssa.OpWasmI64Mul, ssa.OpWasmI64DivU, ssa.OpWasmI64RemS, ssa.OpWasmI64RemU, ssa.OpWasmI64And, ssa.OpWasmI64Or, ssa.OpWasmI64Xor, ssa.OpWasmI64Shl, ssa.OpWasmI64ShrS, ssa.OpWasmI64ShrU, ssa.OpWasmF64Add, ssa.OpWasmF64Sub, ssa.OpWasmF64Mul, ssa.OpWasmF64Div, ssa.OpWasmF64Copysign, ssa.OpWasmI64Rotl:
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case ssa.OpWasmI64Add, ssa.OpWasmI64Sub, ssa.OpWasmI64Mul, ssa.OpWasmI64DivU, ssa.OpWasmI64RemS, ssa.OpWasmI64RemU, ssa.OpWasmI64And, ssa.OpWasmI64Or, ssa.OpWasmI64Xor, ssa.OpWasmI64Shl, ssa.OpWasmI64ShrS, ssa.OpWasmI64ShrU, ssa.OpWasmI64Rotl,
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ssa.OpWasmF32Add, ssa.OpWasmF32Sub, ssa.OpWasmF32Mul, ssa.OpWasmF32Div, ssa.OpWasmF32Copysign,
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ssa.OpWasmF64Add, ssa.OpWasmF64Sub, ssa.OpWasmF64Mul, ssa.OpWasmF64Div, ssa.OpWasmF64Copysign:
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getValue64(s, v.Args[0])
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getValue64(s, v.Args[1])
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s.Prog(v.Op.Asm())
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@ -316,37 +309,50 @@ func ssaGenValueOnStack(s *gc.SSAGenState, v *ssa.Value, extend bool) {
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}
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s.Prog(wasm.AI64DivS)
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case ssa.OpWasmI64TruncSatF64S:
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case ssa.OpWasmI64TruncSatF32S, ssa.OpWasmI64TruncSatF64S:
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getValue64(s, v.Args[0])
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if objabi.GOWASM.SatConv {
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s.Prog(v.Op.Asm())
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} else {
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if v.Op == ssa.OpWasmI64TruncSatF32S {
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s.Prog(wasm.AF64PromoteF32)
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}
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p := s.Prog(wasm.ACall)
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p.To = obj.Addr{Type: obj.TYPE_MEM, Name: obj.NAME_EXTERN, Sym: gc.WasmTruncS}
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}
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case ssa.OpWasmI64TruncSatF64U:
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case ssa.OpWasmI64TruncSatF32U, ssa.OpWasmI64TruncSatF64U:
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getValue64(s, v.Args[0])
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if objabi.GOWASM.SatConv {
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s.Prog(v.Op.Asm())
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} else {
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if v.Op == ssa.OpWasmI64TruncSatF32U {
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s.Prog(wasm.AF64PromoteF32)
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}
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p := s.Prog(wasm.ACall)
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p.To = obj.Addr{Type: obj.TYPE_MEM, Name: obj.NAME_EXTERN, Sym: gc.WasmTruncU}
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}
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case
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ssa.OpWasmF64Neg, ssa.OpWasmF64ConvertI64S, ssa.OpWasmF64ConvertI64U,
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case ssa.OpWasmF32DemoteF64:
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getValue64(s, v.Args[0])
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s.Prog(v.Op.Asm())
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case ssa.OpWasmF64PromoteF32:
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getValue64(s, v.Args[0])
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s.Prog(v.Op.Asm())
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case ssa.OpWasmF32ConvertI64S, ssa.OpWasmF32ConvertI64U,
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ssa.OpWasmF64ConvertI64S, ssa.OpWasmF64ConvertI64U,
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ssa.OpWasmI64Extend8S, ssa.OpWasmI64Extend16S, ssa.OpWasmI64Extend32S,
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ssa.OpWasmF64Sqrt, ssa.OpWasmF64Trunc, ssa.OpWasmF64Ceil, ssa.OpWasmF64Floor, ssa.OpWasmF64Nearest, ssa.OpWasmF64Abs, ssa.OpWasmI64Ctz, ssa.OpWasmI64Clz, ssa.OpWasmI64Popcnt:
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ssa.OpWasmF32Neg, ssa.OpWasmF32Sqrt, ssa.OpWasmF32Trunc, ssa.OpWasmF32Ceil, ssa.OpWasmF32Floor, ssa.OpWasmF32Nearest, ssa.OpWasmF32Abs,
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ssa.OpWasmF64Neg, ssa.OpWasmF64Sqrt, ssa.OpWasmF64Trunc, ssa.OpWasmF64Ceil, ssa.OpWasmF64Floor, ssa.OpWasmF64Nearest, ssa.OpWasmF64Abs,
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ssa.OpWasmI64Ctz, ssa.OpWasmI64Clz, ssa.OpWasmI64Popcnt:
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getValue64(s, v.Args[0])
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s.Prog(v.Op.Asm())
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case ssa.OpLoadReg:
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p := s.Prog(loadOp(v.Type))
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gc.AddrAuto(&p.From, v.Args[0])
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if v.Type.Etype == types.TFLOAT32 {
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s.Prog(wasm.AF64PromoteF32)
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}
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case ssa.OpCopy:
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getValue64(s, v.Args[0])
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@ -359,7 +365,9 @@ func ssaGenValueOnStack(s *gc.SSAGenState, v *ssa.Value, extend bool) {
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func isCmp(v *ssa.Value) bool {
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switch v.Op {
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case ssa.OpWasmI64Eqz, ssa.OpWasmI64Eq, ssa.OpWasmI64Ne, ssa.OpWasmI64LtS, ssa.OpWasmI64LtU, ssa.OpWasmI64GtS, ssa.OpWasmI64GtU, ssa.OpWasmI64LeS, ssa.OpWasmI64LeU, ssa.OpWasmI64GeS, ssa.OpWasmI64GeU, ssa.OpWasmF64Eq, ssa.OpWasmF64Ne, ssa.OpWasmF64Lt, ssa.OpWasmF64Gt, ssa.OpWasmF64Le, ssa.OpWasmF64Ge:
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case ssa.OpWasmI64Eqz, ssa.OpWasmI64Eq, ssa.OpWasmI64Ne, ssa.OpWasmI64LtS, ssa.OpWasmI64LtU, ssa.OpWasmI64GtS, ssa.OpWasmI64GtU, ssa.OpWasmI64LeS, ssa.OpWasmI64LeU, ssa.OpWasmI64GeS, ssa.OpWasmI64GeU,
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ssa.OpWasmF32Eq, ssa.OpWasmF32Ne, ssa.OpWasmF32Lt, ssa.OpWasmF32Gt, ssa.OpWasmF32Le, ssa.OpWasmF32Ge,
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ssa.OpWasmF64Eq, ssa.OpWasmF64Ne, ssa.OpWasmF64Lt, ssa.OpWasmF64Gt, ssa.OpWasmF64Le, ssa.OpWasmF64Ge:
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return true
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default:
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return false
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@ -407,6 +415,11 @@ func i64Const(s *gc.SSAGenState, val int64) {
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p.From = obj.Addr{Type: obj.TYPE_CONST, Offset: val}
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}
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func f32Const(s *gc.SSAGenState, val float64) {
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p := s.Prog(wasm.AF32Const)
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p.From = obj.Addr{Type: obj.TYPE_FCONST, Val: val}
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}
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func f64Const(s *gc.SSAGenState, val float64) {
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p := s.Prog(wasm.AF64Const)
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p.From = obj.Addr{Type: obj.TYPE_FCONST, Val: val}
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