admin/llgo
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

ssa: fix castInt

Browse Source
This commit is contained in:
visualfc
2024-05-16 20:14:04 +08:00
parent 00f74b7f0a
commit feb28ecace
8 changed files with 39 additions and 34 deletions
Download Patch File Download Diff File Expand all files Collapse all files

55
ssa/expr.go
View File

@@ -1059,7 +1059,7 @@ func (b Builder) Convert(t Type, x Expr) (ret Expr) {
case *types.Basic:
switch typ.Kind() {
case types.Uintptr:
ret.impl = castInt(b.impl, x.impl, t.ll)
ret.impl = castUintptr(b, x.impl, t)
return
case types.UnsafePointer:
ret.impl = castPtr(b.impl, x.impl, t.ll)
@@ -1067,19 +1067,10 @@ func (b Builder) Convert(t Type, x Expr) (ret Expr) {
}
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)
ret.impl = castInt(b, x.impl, t)
return
} else if xtyp.Info()&types.IsFloat != 0 {
if typ.Info()&types.IsUnsigned != 0 {
@@ -1099,11 +1090,7 @@ func (b Builder) Convert(t Type, x Expr) (ret Expr) {
}
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, "")
}
ret.impl = castFloat(b, x.impl, t)
return
}
}
@@ -1115,15 +1102,33 @@ func (b Builder) Convert(t Type, x Expr) (ret Expr) {
panic("todo")
}
func castInt(b llvm.Builder, x llvm.Value, t llvm.Type) llvm.Value {
xt := x.Type()
if xt.TypeKind() == llvm.PointerTypeKind {
return llvm.CreatePtrToInt(b, x, t)
func castUintptr(b Builder, x llvm.Value, typ Type) llvm.Value {
if x.Type().TypeKind() == llvm.PointerTypeKind {
return llvm.CreatePtrToInt(b.impl, x, typ.ll)
}
if xt.IntTypeWidth() <= t.IntTypeWidth() {
return llvm.CreateIntCast(b, x, t)
return castInt(b, x, typ)
}
func castInt(b Builder, x llvm.Value, typ Type) llvm.Value {
xsize := b.Prog.td.TypeAllocSize(x.Type())
size := b.Prog.td.TypeAllocSize(typ.ll)
if xsize > size {
return b.impl.CreateTrunc(x, typ.ll, "")
} else if typ.kind == vkUnsigned {
return b.impl.CreateZExt(x, typ.ll, "")
} else {
return b.impl.CreateSExt(x, typ.ll, "")
}
}
func castFloat(b Builder, x llvm.Value, typ Type) llvm.Value {
xsize := b.Prog.td.TypeAllocSize(x.Type())
size := b.Prog.td.TypeAllocSize(typ.ll)
if xsize > size {
return b.impl.CreateFPTrunc(x, typ.ll, "")
} else {
return b.impl.CreateFPExt(x, typ.ll, "")
}
return llvm.CreateTrunc(b, x, t)
}
func castPtr(b llvm.Builder, x llvm.Value, t llvm.Type) llvm.Value {
@@ -1245,12 +1250,12 @@ func (b Builder) TypeAssert(x Expr, assertedTyp Type, commaOk bool) (ret Expr) {
conv := func(v llvm.Value) llvm.Value {
switch kind {
case types.Float32:
v = castInt(b.impl, v, b.Prog.tyInt32())
v = castInt(b, v, b.Prog.Type(types.Typ[types.Int32], InC))
v = b.impl.CreateBitCast(v, assertedTyp.ll, "")
case types.Float64:
v = b.impl.CreateBitCast(v, assertedTyp.ll, "")
default:
v = castInt(b.impl, v, assertedTyp.ll)
v = castInt(b, v, assertedTyp)
}
return v
}