a5ed993f8d
This commit lets the compiler know about interrupts and allows optimizations to be performed based on that: interrupts are eliminated when they appear to be unused in a program. This is done with a new pseudo-call (runtime/interrupt.New) that is treated specially by the compiler.
48 строки
1,2 КиБ
Go
48 строки
1,2 КиБ
Go
package transform
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import (
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"go/scanner"
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"go/token"
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"path/filepath"
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"tinygo.org/x/go-llvm"
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)
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// errorAt returns an error value at the location of the value.
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// The location information may not be complete as it depends on debug
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// information in the IR.
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func errorAt(val llvm.Value, msg string) scanner.Error {
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return scanner.Error{
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Pos: getPosition(val),
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Msg: msg,
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}
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}
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// getPosition returns the position information for the given value, as far as
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// it is available.
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func getPosition(val llvm.Value) token.Position {
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if !val.IsAInstruction().IsNil() {
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loc := val.InstructionDebugLoc()
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if loc.IsNil() {
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return token.Position{}
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}
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file := loc.LocationScope().ScopeFile()
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return token.Position{
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Filename: filepath.Join(file.FileDirectory(), file.FileFilename()),
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Line: int(loc.LocationLine()),
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Column: int(loc.LocationColumn()),
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}
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} else if !val.IsAFunction().IsNil() {
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loc := val.Subprogram()
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if loc.IsNil() {
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return token.Position{}
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}
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file := loc.ScopeFile()
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return token.Position{
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Filename: filepath.Join(file.FileDirectory(), file.FileFilename()),
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Line: int(loc.SubprogramLine()),
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}
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} else {
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return token.Position{}
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}
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}
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