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improve word '<', word (u)word '<=' , uword '>=' codegen
This commit is contained in:
Irmen de Jong
parent
d2ab5f230d
commit
6381d2b6ac
@ -501,6 +501,17 @@ internal class ExpressionsAsmGen(private val program: Program, private val asmge
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}
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private fun translateWordLessJump(left: Expression, right: Expression, leftConstVal: NumericLiteralValue?, rightConstVal: NumericLiteralValue?, jumpIfFalseLabel: String) {
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fun code(msbCpyOperand: String, lsbCmpOperand: String) {
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asmgen.out("""
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cmp $lsbCmpOperand
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tya
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sbc $msbCpyOperand
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bvc +
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eor #$80
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+ bpl $jumpIfFalseLabel""")
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}
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if(rightConstVal!=null) {
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if(leftConstVal!=null) {
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if(rightConstVal>=leftConstVal)
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@ -508,29 +519,22 @@ internal class ExpressionsAsmGen(private val program: Program, private val asmge
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return
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} else {
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if (left is IdentifierReference) {
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val name = asmgen.asmVariableName(left)
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return if(rightConstVal.number.toInt()!=0) {
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asmgen.out(
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"""
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lda $name
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cmp #<${rightConstVal.number}
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lda $name+1
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sbc #>${rightConstVal.number}
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bvc +
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eor #$80
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+ bpl $jumpIfFalseLabel""")
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asmgen.assignExpressionToRegister(left, RegisterOrPair.AY)
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code("#>${rightConstVal.number}", "#<${rightConstVal.number}")
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}
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else
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else {
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val name = asmgen.asmVariableName(left)
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asmgen.out(" lda $name+1 | bpl $jumpIfFalseLabel")
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}
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}
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}
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}
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if(right is IdentifierReference) {
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// TODO optimize comparison against identifier
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// asmgen.assignExpressionToRegister(left, RegisterOrPair.AY)
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// val varname = asmgen.asmVariableName(right)
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// return code("$varname+1", varname)
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asmgen.assignExpressionToRegister(left, RegisterOrPair.AY)
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val varname = asmgen.asmVariableName(right)
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return code("$varname+1", varname)
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}
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asmgen.assignExpressionToVariable(right, "P8ZP_SCRATCH_W2", DataType.UWORD, null)
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@ -791,6 +795,17 @@ internal class ExpressionsAsmGen(private val program: Program, private val asmge
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}
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private fun translateUwordLessOrEqualJump(left: Expression, right: Expression, leftConstVal: NumericLiteralValue?, rightConstVal: NumericLiteralValue?, jumpIfFalseLabel: String) {
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fun code(msbCpyOperand: String, lsbCmpOperand: String) {
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asmgen.out("""
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cpy $msbCpyOperand
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beq +
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bcs $jumpIfFalseLabel
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+ cmp $lsbCmpOperand
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bcs $jumpIfFalseLabel
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bne $jumpIfFalseLabel""")
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}
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if(rightConstVal!=null) {
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if(leftConstVal!=null) {
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if(rightConstVal>leftConstVal)
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@ -798,18 +813,13 @@ internal class ExpressionsAsmGen(private val program: Program, private val asmge
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return
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} else {
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if (left is IdentifierReference) {
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return if(rightConstVal.number.toInt()!=0) {
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// TODO is this correct? uword <= not-null
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asmgen.assignExpressionToRegister(left, RegisterOrPair.AY)
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code("#>${rightConstVal.number}", "#<${rightConstVal.number}")
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}
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else {
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val name = asmgen.asmVariableName(left)
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return if(rightConstVal.number.toInt()!=0)
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asmgen.out("""
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lda #>${rightConstVal.number}
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cmp $name+1
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bcc $jumpIfFalseLabel
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bne +
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lda #<${rightConstVal.number}
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cmp $name
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bcc $jumpIfFalseLabel
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+""")
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else
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asmgen.out("""
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lda $name
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ora $name+1
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@ -817,12 +827,13 @@ internal class ExpressionsAsmGen(private val program: Program, private val asmge
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}
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}
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}
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}
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if(right is IdentifierReference) {
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// TODO optimize comparison against identifier
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// asmgen.assignExpressionToRegister(left, RegisterOrPair.AY)
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// val varname = asmgen.asmVariableName(right)
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// return code("$varname+1", varname)
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// TODO is this correct? uword <= variable
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asmgen.assignExpressionToRegister(left, RegisterOrPair.AY)
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val varname = asmgen.asmVariableName(right)
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return code("$varname+1", varname)
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}
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asmgen.assignExpressionToVariable(right, "P8ZP_SCRATCH_W2", DataType.UWORD, null)
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@ -831,6 +842,18 @@ internal class ExpressionsAsmGen(private val program: Program, private val asmge
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}
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private fun translateWordLessOrEqualJump(left: Expression, right: Expression, leftConstVal: NumericLiteralValue?, rightConstVal: NumericLiteralValue?, jumpIfFalseLabel: String) {
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fun code(msbCpyOperand: String, lsbCmpOperand: String) {
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asmgen.out("""
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cmp $msbCpyOperand
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tya
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sbc $lsbCmpOperand
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bvc +
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eor #$80
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+ bpl $jumpIfFalseLabel"""
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)
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}
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if(rightConstVal!=null) {
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if(leftConstVal!=null) {
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if(rightConstVal>leftConstVal)
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@ -838,17 +861,14 @@ internal class ExpressionsAsmGen(private val program: Program, private val asmge
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return
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} else {
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if (left is IdentifierReference) {
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return if(rightConstVal.number.toInt()!=0) {
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// TODO is this correct? word <= not-null
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asmgen.assignExpressionToRegister(left, RegisterOrPair.AY)
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code("#>${rightConstVal.number}", "#<${rightConstVal.number}")
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}
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else {
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// TODO is this correct? word <= 0 (can be shorter?)
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val name = asmgen.asmVariableName(left)
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return if(rightConstVal.number.toInt()!=0)
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asmgen.out("""
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lda #<${rightConstVal.number}
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cmp $name
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lda #>${rightConstVal.number}
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sbc $name+1
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bvc +
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eor #$80
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+ bmi $jumpIfFalseLabel""")
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else
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asmgen.out("""
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lda #0
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cmp $name
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@ -859,12 +879,13 @@ internal class ExpressionsAsmGen(private val program: Program, private val asmge
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}
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}
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}
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}
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if(right is IdentifierReference) {
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// TODO optimize comparison against identifier
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// asmgen.assignExpressionToRegister(left, RegisterOrPair.AY)
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// val varname = asmgen.asmVariableName(right)
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// return code("$varname+1", varname)
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// TODO is this correct? word <= variable
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asmgen.assignExpressionToRegister(left, RegisterOrPair.AY)
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val varname = asmgen.asmVariableName(right)
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return code("$varname+1", varname)
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}
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asmgen.assignExpressionToVariable(left, "P8ZP_SCRATCH_W2", DataType.UWORD, null)
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@ -944,6 +965,17 @@ internal class ExpressionsAsmGen(private val program: Program, private val asmge
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}
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private fun translateUwordGreaterOrEqualJump(left: Expression, right: Expression, leftConstVal: NumericLiteralValue?, rightConstVal: NumericLiteralValue?, jumpIfFalseLabel: String) {
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fun code(msbCpyOperand: String, lsbCmpOperand: String) {
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asmgen.out("""
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cpy $msbCpyOperand
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beq +
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bcc $jumpIfFalseLabel
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+ cmp $lsbCmpOperand
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bcc $jumpIfFalseLabel
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+""")
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}
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if(rightConstVal!=null) {
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if(leftConstVal!=null) {
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if(rightConstVal<leftConstVal)
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@ -951,27 +983,20 @@ internal class ExpressionsAsmGen(private val program: Program, private val asmge
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return
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} else {
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if (left is IdentifierReference) {
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val name = asmgen.asmVariableName(left)
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if(rightConstVal.number.toInt()!=0)
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asmgen.out("""
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lda $name+1
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cmp #>${rightConstVal.number}
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bcc $jumpIfFalseLabel
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bne +
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lda $name
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cmp #<${rightConstVal.number}
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bcc $jumpIfFalseLabel
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+""")
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return
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if(rightConstVal.number.toInt()!=0) {
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// TODO is this correct? uword >= not-0
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asmgen.assignExpressionToRegister(left, RegisterOrPair.AY)
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code("#>${rightConstVal.number}", "#<${rightConstVal.number}")
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}
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}
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}
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}
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if(right is IdentifierReference) {
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// TODO optimize comparison against identifier
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// asmgen.assignExpressionToRegister(left, RegisterOrPair.AY)
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// val varname = asmgen.asmVariableName(right)
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// return code("$varname+1", varname)
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// TODO is this correct? uword >= variable
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asmgen.assignExpressionToRegister(left, RegisterOrPair.AY)
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val varname = asmgen.asmVariableName(right)
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return code("$varname+1", varname)
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}
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asmgen.assignExpressionToVariable(left, "P8ZP_SCRATCH_W2", DataType.UWORD, null)
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@ -2,8 +2,8 @@
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TODO
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====
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- optimize comparisons followed by a conditional jump ; try to not have to jsr to the comparison routines. (so if/while/do-until are faster)
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see: ExpressionAsmGen translateXXXXXJump() routines, all called from translateComparisonExpressionWithJumpIfFalse()
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- fix imageviewer only showing first image
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- fix errors in comparison changes
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- add cx16 vload()
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- optimize several inner loops in gfx2
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