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6502: Fix the optimization of inlining a variable to the accumulator

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This commit is contained in:
Karol Stasiak 2018-07-21 23:53:30 +02:00
parent c4c1bf00f2
commit 07c049c168
1 changed files with 4 additions and 0 deletions
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4
src/main/scala/millfork/assembly/mos/opt/VariableToRegisterOptimization.scala
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@ -44,6 +44,7 @@ object VariableToRegisterOptimization extends AssemblyOptimization[AssemblyLine]
PHX, PLX,
SBX, SAX, LXA, XAA, AHX, SHX, SHY, LAS, TAS,
HuSAX, SXY, TXY, TXY,
BYTE,
)
private val opcodesThatAlwaysPrecludeYAllocation = Set(
@ -52,11 +53,13 @@ object VariableToRegisterOptimization extends AssemblyOptimization[AssemblyLine]
PHY, PLY,
AHX, SHX, SHY, LAS, TAS,
SAY, SXY, TXY, TYX,
BYTE,
)
private val opcodesThatAlwaysPrecludeZAllocation = Set(
JSR, STZ, TZA, INZ, DEZ, CPZ,
PHZ, PLZ,
BYTE,
)
private val opcodesThatAlwaysPrecludeAAllocation = Set(
@ -68,6 +71,7 @@ object VariableToRegisterOptimization extends AssemblyOptimization[AssemblyLine]
AHX, SHX, SHY, LAS, TAS,
HuSAX, SAY,
TCD, TDC, TSC, TCS, XBA,
LABEL, BYTE,
)
// If any of these opcodes is used on a variable