| // Copyright 2016 The Go Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| // This file contains rules to decompose builtin compound types |
| // (complex,string,slice,interface) into their constituent |
| // types. These rules work together with the decomposeBuiltIn |
| // pass which handles phis of these types. |
| |
| // complex ops |
| (ComplexReal (ComplexMake real _ )) -> real |
| (ComplexImag (ComplexMake _ imag )) -> imag |
| |
| (Load <t> ptr mem) && t.IsComplex() && t.Size() == 8 -> |
| (ComplexMake |
| (Load <typ.Float32> ptr mem) |
| (Load <typ.Float32> |
| (OffPtr <typ.Float32Ptr> [4] ptr) |
| mem) |
| ) |
| (Store {t} dst (ComplexMake real imag) mem) && t.(*types.Type).Size() == 8 -> |
| (Store {typ.Float32} |
| (OffPtr <typ.Float32Ptr> [4] dst) |
| imag |
| (Store {typ.Float32} dst real mem)) |
| (Load <t> ptr mem) && t.IsComplex() && t.Size() == 16 -> |
| (ComplexMake |
| (Load <typ.Float64> ptr mem) |
| (Load <typ.Float64> |
| (OffPtr <typ.Float64Ptr> [8] ptr) |
| mem) |
| ) |
| (Store {t} dst (ComplexMake real imag) mem) && t.(*types.Type).Size() == 16 -> |
| (Store {typ.Float64} |
| (OffPtr <typ.Float64Ptr> [8] dst) |
| imag |
| (Store {typ.Float64} dst real mem)) |
| |
| // string ops |
| (StringPtr (StringMake ptr _)) -> ptr |
| (StringLen (StringMake _ len)) -> len |
| |
| (Load <t> ptr mem) && t.IsString() -> |
| (StringMake |
| (Load <typ.BytePtr> ptr mem) |
| (Load <typ.Int> |
| (OffPtr <typ.IntPtr> [config.PtrSize] ptr) |
| mem)) |
| (Store dst (StringMake ptr len) mem) -> |
| (Store {typ.Int} |
| (OffPtr <typ.IntPtr> [config.PtrSize] dst) |
| len |
| (Store {typ.BytePtr} dst ptr mem)) |
| |
| // slice ops |
| (SlicePtr (SliceMake ptr _ _ )) -> ptr |
| (SliceLen (SliceMake _ len _)) -> len |
| (SliceCap (SliceMake _ _ cap)) -> cap |
| |
| (Load <t> ptr mem) && t.IsSlice() -> |
| (SliceMake |
| (Load <t.ElemType().PtrTo()> ptr mem) |
| (Load <typ.Int> |
| (OffPtr <typ.IntPtr> [config.PtrSize] ptr) |
| mem) |
| (Load <typ.Int> |
| (OffPtr <typ.IntPtr> [2*config.PtrSize] ptr) |
| mem)) |
| (Store dst (SliceMake ptr len cap) mem) -> |
| (Store {typ.Int} |
| (OffPtr <typ.IntPtr> [2*config.PtrSize] dst) |
| cap |
| (Store {typ.Int} |
| (OffPtr <typ.IntPtr> [config.PtrSize] dst) |
| len |
| (Store {typ.BytePtr} dst ptr mem))) |
| |
| // interface ops |
| (ITab (IMake itab _)) -> itab |
| (IData (IMake _ data)) -> data |
| |
| (Load <t> ptr mem) && t.IsInterface() -> |
| (IMake |
| (Load <typ.BytePtr> ptr mem) |
| (Load <typ.BytePtr> |
| (OffPtr <typ.BytePtrPtr> [config.PtrSize] ptr) |
| mem)) |
| (Store dst (IMake itab data) mem) -> |
| (Store {typ.BytePtr} |
| (OffPtr <typ.BytePtrPtr> [config.PtrSize] dst) |
| data |
| (Store {typ.Uintptr} dst itab mem)) |