Adjust periods to allow up to 64 phases.

DarkDimius · DarkDimius · commit f0853873bd2a · 2015-02-19T17:04:55.000+01:00
diff --git a/src/dotty/tools/dotc/core/Periods.scala b/src/dotty/tools/dotc/core/Periods.scala
@@ -47,8 +47,8 @@ object Periods {
    *
    *     sign, always 0        1 bit
    *     runid                21 bits
-   *     last phase id:        5 bits
-   *     #phases before last:  5 bits
+   *     last phase id:        6 bits
+   *     #phases before last:  6 bits
    *
    *     // Dmitry: sign == 0 isn't actually always true, in some cases phaseId == -1 is used for shifts, that easily creates code < 0
    */
@@ -153,7 +153,7 @@ object Periods {
   final val FirstPhaseId = 1
 
   /** The number of bits needed to encode a phase identifier. */
-  final val PhaseWidth = 5
+  final val PhaseWidth = 6
   final val PhaseMask = (1 << PhaseWidth) - 1
   final val MaxPossiblePhaseId = PhaseMask
 }

Original file line number	Diff line number	Diff line change
`@@ -47,8 +47,8 @@ object Periods {`
`47`	`47`	`*`
`48`	`48`	`* sign, always 0 1 bit`
`49`	`49`	`* runid 21 bits`
`50`		`- * last phase id: 5 bits`
`51`		`- * #phases before last: 5 bits`
	`50`	`+ * last phase id: 6 bits`
	`51`	`+ * #phases before last: 6 bits`
`52`	`52`	`*`
`53`	`53`	`* // Dmitry: sign == 0 isn't actually always true, in some cases phaseId == -1 is used for shifts, that easily creates code < 0`
`54`	`54`	`*/`
`@@ -153,7 +153,7 @@ object Periods {`
`153`	`153`	`final val FirstPhaseId = 1`
`154`	`154`
`155`	`155`	`/** The number of bits needed to encode a phase identifier. */`
`156`		`- final val PhaseWidth = 5`
	`156`	`+ final val PhaseWidth = 6`
`157`	`157`	`final val PhaseMask = (1 << PhaseWidth) - 1`
`158`	`158`	`final val MaxPossiblePhaseId = PhaseMask`
`159`	`159`	`}`