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all unsigned comparisons

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This commit is contained in:
Irmen de Jong 2020-09-26 17:24:17 +02:00
parent 66364554c4
commit 4179b4e543
3 changed files with 119 additions and 9 deletions
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86
compiler/src/prog8/compiler/target/c64/codegen/ExpressionsAsmGen.kt
View File

@ -325,7 +325,34 @@ internal class ExpressionsAsmGen(private val program: Program, private val asmge
}
private fun translateUwordLessOrEqual(left: Expression, right: Expression, leftConstVal: NumericLiteralValue?, rightConstVal: NumericLiteralValue?, jumpIfFalseLabel: String) {
// TODO compare with optimized asm
if(rightConstVal!=null) {
if(leftConstVal!=null) {
if(rightConstVal>leftConstVal)
asmgen.out(" jmp $jumpIfFalseLabel")
return
} else {
if (left is IdentifierReference) {
val name = asmgen.asmVariableName(left)
if(rightConstVal.number.toInt()!=0)
asmgen.out("""
lda #>${rightConstVal.number}
cmp $name+1
bcc $jumpIfFalseLabel
bne +
lda #<${rightConstVal.number}
cmp $name
bcc $jumpIfFalseLabel
+""")
else
asmgen.out("""
lda $name
ora $name+1
bne $jumpIfFalseLabel""")
return
}
}
}
asmgen.translateExpression(left)
asmgen.translateExpression(right)
asmgen.out(" jsr prog8_lib.lesseq_uw | inx | lda P8ESTACK_LO,x | beq $jumpIfFalseLabel")
@ -383,7 +410,7 @@ internal class ExpressionsAsmGen(private val program: Program, private val asmge
private fun translateUwordGreater(left: Expression, right: Expression, leftConstVal: NumericLiteralValue?, rightConstVal: NumericLiteralValue?, jumpIfFalseLabel: String) {
if(rightConstVal!=null) {
if(leftConstVal!=null) {
if(rightConstVal>=leftConstVal)
if(rightConstVal<=leftConstVal)
asmgen.out(" jmp $jumpIfFalseLabel")
return
} else {
@ -403,10 +430,8 @@ internal class ExpressionsAsmGen(private val program: Program, private val asmge
else
asmgen.out("""
lda $name
bne +
lda $name+1
beq $jumpIfFalseLabel
+""")
ora $name+1
beq $jumpIfFalseLabel""")
return
}
}
@ -425,7 +450,30 @@ internal class ExpressionsAsmGen(private val program: Program, private val asmge
}
private fun translateUbyteGreaterOrEqual(left: Expression, right: Expression, leftConstVal: NumericLiteralValue?, rightConstVal: NumericLiteralValue?, jumpIfFalseLabel: String) {
// TODO compare with optimized asm
if(rightConstVal!=null) {
if(leftConstVal!=null) {
if(rightConstVal<leftConstVal)
asmgen.out(" jmp $jumpIfFalseLabel")
return
} else {
if (left is IdentifierReference) {
val name = asmgen.asmVariableName(left)
if(rightConstVal.number.toInt()!=0)
asmgen.out("""
lda $name
cmp #${rightConstVal.number}
bcc $jumpIfFalseLabel""")
return
}
else if (left is DirectMemoryRead) {
translateDirectMemReadExpression(left, false)
if(rightConstVal.number.toInt()!=0)
asmgen.out(" cmp #${rightConstVal.number} | bcc $jumpIfFalseLabel")
return
}
}
}
asmgen.translateExpression(left)
asmgen.translateExpression(right)
asmgen.out(" jsr prog8_lib.greatereq_ub | inx | lda P8ESTACK_LO,x | beq $jumpIfFalseLabel")
@ -439,7 +487,29 @@ internal class ExpressionsAsmGen(private val program: Program, private val asmge
}
private fun translateUwordGreaterOrEqual(left: Expression, right: Expression, leftConstVal: NumericLiteralValue?, rightConstVal: NumericLiteralValue?, jumpIfFalseLabel: String) {
// TODO compare with optimized asm
if(rightConstVal!=null) {
if(leftConstVal!=null) {
if(rightConstVal<leftConstVal)
asmgen.out(" jmp $jumpIfFalseLabel")
return
} else {
if (left is IdentifierReference) {
val name = asmgen.asmVariableName(left)
if(rightConstVal.number.toInt()!=0)
asmgen.out("""
lda $name+1
cmp #>${rightConstVal.number}
bcc $jumpIfFalseLabel
bne +
lda $name
cmp #<${rightConstVal.number}
bcc $jumpIfFalseLabel
+""")
return
}
}
}
asmgen.translateExpression(left)
asmgen.translateExpression(right)
asmgen.out(" jsr prog8_lib.greatereq_uw | inx | lda P8ESTACK_LO,x | beq $jumpIfFalseLabel")

40
examples/cmp/comparisons.p8
View File

@ -370,6 +370,11 @@ main {
} else {
txt.print("fail < eb6\n")
}
if b2 < 0 {
txt.print("ok < eb7\n")
} else {
txt.print("fail < eb7\n")
}
if w2 < -32768 {
txt.print("fail < ew1\n")
@ -401,6 +406,11 @@ main {
} else {
txt.print("fail < ew6\n")
}
if w2 < 0 {
txt.print("ok < ew7\n")
} else {
txt.print("fail < ew7\n")
}
}
sub greater() {
@ -557,6 +567,11 @@ main {
} else {
txt.print("ok > eb6\n")
}
if b2 > 0 {
txt.print("fail > eb7\n")
} else {
txt.print("ok > eb7\n")
}
if w2 > -32768 {
txt.print("ok > ew1\n")
@ -588,6 +603,11 @@ main {
} else {
txt.print("ok > ew6\n")
}
if w2 > 0 {
txt.print("fail > ew6\n")
} else {
txt.print("ok > ew6\n")
}
}
sub lessequal() {
@ -745,6 +765,11 @@ main {
} else {
txt.print("fail <= eb6\n")
}
if b2 <= 0 {
txt.print("ok <= eb7\n")
} else {
txt.print("fail <= eb7\n")
}
if w2 <= -32768 {
txt.print("fail <= ew1\n")
@ -776,6 +801,11 @@ main {
} else {
txt.print("fail <= ew6\n")
}
if w2 <= 0 {
txt.print("ok <= ew7\n")
} else {
txt.print("fail <= ew7\n")
}
}
@ -933,6 +963,11 @@ main {
} else {
txt.print("ok >= eb6\n")
}
if b2 >= 0 {
txt.print("fail >= eb7\n")
} else {
txt.print("ok >= eb7\n")
}
if w2 >= -32768 {
txt.print("ok >= ew1\n")
@ -964,5 +999,10 @@ main {
} else {
txt.print("ok >= ew6\n")
}
if w2 >= 0 {
txt.print("fail >= ew7\n")
} else {
txt.print("ok >= ew7\n")
}
}
}

2
examples/wizzine.p8
View File

@ -58,7 +58,7 @@ irq {
ubyte @zp y = cos8u(angle*3-spri*16) / 2 + 70
c64.SPXYW[spri] = mkword(y, lsb(x))
c64.MSIGX <<= 1
if msb(x) c64.MSIGX++
if msb(x) c64.MSIGX++ ; TODO has this become badly translated to asm?? it makes the loop quite slow
}
c64.EXTCOL-=8
}