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Tail-call optimization shouldn't move discard pseudoinstructions

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This commit is contained in:
Karol Stasiak 2018-01-20 22:03:19 +01:00
parent 7e04312462
commit 430051635d
1 changed files with 1 additions and 1 deletions
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src/main/scala/millfork/assembly/opt/AlwaysGoodOptimizations.scala
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@ -277,7 +277,7 @@ object AlwaysGoodOptimizations {
val TailCallOptimization = new RuleBasedAssemblyOptimization("Tail call optimization",
needsFlowInfo = FlowInfoRequirement.NoRequirement,
(Elidable & HasOpcode(JSR)) ~ HasOpcodeIn(NoopDiscardsFlags).* ~ (Elidable & HasOpcode(RTS)) ~~> (c => c.tail.init :+ c.head.copy(opcode = JMP)),
(Elidable & HasOpcode(JSR)) ~ HasOpcodeIn(NoopDiscardsFlags).* ~ (Elidable & HasOpcode(RTS)) ~~> (c => c.head.copy(opcode = JMP) :: Nil),
(Elidable & HasOpcode(JSR)) ~
HasOpcode(LABEL).* ~
HasOpcodeIn(NoopDiscardsFlags).*.capture(0) ~