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ssa.convert real numeric types

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This commit is contained in:
visualfc
2024-05-08 12:25:56 +08:00
parent c9e8709490
commit 6eaf21e5a6
5 changed files with 789 additions and 104 deletions
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55
ssa/expr.go
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@@ -962,19 +962,64 @@ func (b Builder) ChangeType(t Type, x Expr) (ret Expr) {
//
// t1 = convert []byte <- string (t0)
func (b Builder) Convert(t Type, x Expr) (ret Expr) {
if debugInstr {
log.Printf("Convert %v <- %v\n", t.RawType(), x.RawType())
}
typ := t.raw.Type
ret.Type = b.Prog.rawType(typ)
switch und := typ.Underlying().(type) {
switch typ := typ.Underlying().(type) {
case *types.Basic:
kind := und.Kind()
switch {
case kind >= types.Int && kind <= types.Uintptr:
switch typ.Kind() {
case types.Uintptr:
ret.impl = castInt(b.impl, x.impl, t.ll)
return
case kind == types.UnsafePointer:
case types.UnsafePointer:
ret.impl = castPtr(b.impl, x.impl, t.ll)
return
}
switch xtyp := x.RawType().Underlying().(type) {
case *types.Basic:
size := b.Prog.SizeOf(t)
xsize := b.Prog.SizeOf(x.Type)
if typ.Info()&types.IsInteger != 0 {
// int <- int/float
if xtyp.Info()&types.IsInteger != 0 {
// if xsize > size {
// ret.impl = b.impl.CreateTrunc(x.impl, t.ll, "")
// } else if typ.Info()&types.IsUnsigned != 0 {
// ret.impl = b.impl.CreateZExt(x.impl, t.ll, "")
// } else {
// ret.impl = b.impl.CreateSExt(x.impl, t.ll, "")
// }
ret.impl = castInt(b.impl, x.impl, t.ll)
return
} else if xtyp.Info()&types.IsFloat != 0 {
if typ.Info()&types.IsUnsigned != 0 {
ret.impl = b.impl.CreateFPToUI(x.impl, t.ll, "")
} else {
ret.impl = b.impl.CreateFPToSI(x.impl, t.ll, "")
}
return
}
} else if typ.Info()&types.IsFloat != 0 {
// float <- int/float
if xtyp.Info()&types.IsInteger != 0 {
if xtyp.Info()&types.IsUnsigned != 0 {
ret.impl = b.impl.CreateUIToFP(x.impl, t.ll, "")
} else {
ret.impl = b.impl.CreateSIToFP(x.impl, t.ll, "")
}
return
} else if xtyp.Info()&types.IsFloat != 0 {
if xsize > size {
ret.impl = b.impl.CreateFPTrunc(x.impl, t.ll, "")
} else {
ret.impl = b.impl.CreateFPExt(x.impl, t.ll, "")
}
return
}
}
}
case *types.Pointer:
ret.impl = castPtr(b.impl, x.impl, t.ll)
return