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pos.go
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pos.go
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/*
* Copyright 2022 ByteDance Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package ssa
import (
`fmt`
`math`
)
const (
_P_term = math.MaxUint32
)
type Pos struct {
B *BasicBlock
I int
}
func pos(bb *BasicBlock, i int) Pos {
return Pos { bb, i }
}
func (self Pos) String() string {
if self.I == _P_term {
return fmt.Sprintf("bb_%d.term", self.B.Id)
} else {
return fmt.Sprintf("bb_%d.ins[%d]", self.B.Id, self.I)
}
}
func (self Pos) isPriorTo(other Pos) bool {
return self.B.Id < other.B.Id || (self.I < other.I && self.B.Id == other.B.Id)
}