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

llgo/ssa: valFromData, buildVal

Browse Source
This commit is contained in:
xushiwei
2024-05-24 01:18:18 +08:00
parent 176c0b2d36
commit 2628ee98f3
3 changed files with 198 additions and 25 deletions
Download Patch File Download Diff File Expand all files Collapse all files

51
ssa/interface.go
View File

@@ -178,23 +178,43 @@ func (b Builder) makeIntfByIntptr(tinter Type, rawIntf *types.Interface, typ Typ
panic("todo")
}
func (b Builder) valFromData(t Type, data Expr) Expr {
kind := abi.KindOf(t.raw.Type, b.Prog.is32Bits)
func (b Builder) valFromData(typ Type, data llvm.Value) Expr {
prog := b.Prog
kind, real, lvl := abi.KindOf(typ.raw.Type, 0, prog.is32Bits)
switch kind {
case abi.Indirect:
impl := b.impl
tll := t.ll
tll := typ.ll
tptr := llvm.PointerType(tll, 0)
ptr := llvm.CreatePointerCast(impl, data.impl, tptr)
return Expr{llvm.CreateLoad(impl, tll, ptr), t}
ptr := llvm.CreatePointerCast(impl, data, tptr)
return Expr{llvm.CreateLoad(impl, tll, ptr), typ}
case abi.Pointer:
return Expr{data.impl, t}
return Expr{data, typ}
}
t := typ
if lvl > 0 {
t = prog.rawType(real)
}
switch kind {
case abi.Integer:
x := castUintptr(b, data.impl, b.Prog.Uintptr())
return Expr{castInt(b, x, t), t}
x := castUintptr(b, data, prog.Uintptr())
return b.buildVal(typ, castInt(b, x, t), lvl)
case abi.BitCast:
x := castUintptr(b, data.impl, b.Prog.Uintptr())
return Expr{llvm.CreateBitCast(b.impl, x, t.ll), t}
x := castUintptr(b, data, prog.Uintptr())
return b.buildVal(typ, llvm.CreateBitCast(b.impl, x, t.ll), lvl)
}
panic("todo")
}
func (b Builder) buildVal(typ Type, val llvm.Value, lvl int) Expr {
if lvl == 0 {
return Expr{val, typ}
}
switch t := typ.raw.Type.Underlying().(type) {
case *types.Struct:
telem := b.Prog.rawType(t.Field(0).Type())
elem := b.buildVal(telem, val, lvl-1)
return Expr{aggregateValue(b.impl, typ.ll, elem.impl), typ}
}
panic("todo")
}
@@ -248,7 +268,7 @@ func (b Builder) TypeAssert(x Expr, assertedTyp Type, commaOk bool) Expr {
if commaOk {
prog := b.Prog
t := prog.Tuple(assertedTyp, prog.Bool())
val := b.valFromData(assertedTyp, b.InterfaceData(x))
val := b.valFromData(assertedTyp, b.faceData(x.impl))
zero := prog.Zero(assertedTyp)
valTrue := aggregateValue(b.impl, t.ll, val.impl, prog.BoolVal(true).impl)
valFalse := aggregateValue(b.impl, t.ll, zero.impl, prog.BoolVal(false).impl)
@@ -259,7 +279,7 @@ func (b Builder) TypeAssert(x Expr, assertedTyp Type, commaOk bool) Expr {
b.SetBlock(blks[1])
b.Panic(b.Str("type assertion failed"))
b.SetBlock(blks[0])
return b.valFromData(assertedTyp, b.InterfaceData(x))
return b.valFromData(assertedTyp, b.faceData(x.impl))
}
/*
@@ -337,8 +357,11 @@ func (b Builder) InterfaceData(x Expr) Expr {
if debugInstr {
log.Printf("InterfaceData %v\n", x.impl)
}
ptr := llvm.CreateExtractValue(b.impl, x.impl, 1)
return Expr{ptr, b.Prog.VoidPtr()}
return Expr{b.faceData(x.impl), b.Prog.VoidPtr()}
}
func (b Builder) faceData(x llvm.Value) llvm.Value {
return llvm.CreateExtractValue(b.impl, x, 1)
}
func (b Builder) faceAbiType(x Expr) Expr {