tinygo/compiler/volatile.go
2020-03-25 20:17:46 +01:00

30 строки
906 Б
Go

package compiler
// This file implements volatile loads/stores in runtime/volatile.LoadT and
// runtime/volatile.StoreT as compiler builtins.
import (
"golang.org/x/tools/go/ssa"
"tinygo.org/x/go-llvm"
)
// createVolatileLoad is the implementation of the intrinsic function
// runtime/volatile.LoadT().
func (b *builder) createVolatileLoad(instr *ssa.CallCommon) (llvm.Value, error) {
addr := b.getValue(instr.Args[0])
b.createNilCheck(addr, "deref")
val := b.CreateLoad(addr, "")
val.SetVolatile(true)
return val, nil
}
// createVolatileStore is the implementation of the intrinsic function
// runtime/volatile.StoreT().
func (b *builder) createVolatileStore(instr *ssa.CallCommon) (llvm.Value, error) {
addr := b.getValue(instr.Args[0])
val := b.getValue(instr.Args[1])
b.createNilCheck(addr, "deref")
store := b.CreateStore(val, addr)
store.SetVolatile(true)
return llvm.Value{}, nil
}