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for loops now use 'bra' if available

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This commit is contained in:
Irmen de Jong 2021-02-28 16:35:59 +01:00
parent dea775a9cd
commit 0e0278c84a
1 changed files with 38 additions and 37 deletions
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75
compiler/src/prog8/compiler/target/cpu6502/codegen/ForLoopsAsmGen.kt
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@ -57,9 +57,9 @@ internal class ForLoopsAsmGen(private val program: Program, private val asmgen:
lda $varname
$modifiedLabel cmp #0 ; modified
beq $endLabel
$incdec $varname
jmp $loopLabel
$endLabel""")
$incdec $varname""")
asmgen.jmp(loopLabel)
asmgen.out(endLabel)
} else {
@ -117,16 +117,15 @@ $modifiedLabel2 cmp #0 ; modified
asmgen.out("""
+ inc $varname
bne $loopLabel
inc $varname+1
jmp $loopLabel
""")
inc $varname+1""")
asmgen.jmp(loopLabel)
} else {
asmgen.out("""
+ lda $varname
bne +
dec $varname+1
+ dec $varname
jmp $loopLabel""")
+ dec $varname""")
asmgen.jmp(loopLabel)
}
asmgen.out(endLabel)
}
@ -386,23 +385,25 @@ $loopLabel""")
}
-2 -> {
when (range.last) {
0 -> asmgen.out("""
lda $varname
beq $endLabel
dec $varname
dec $varname
jmp $loopLabel""")
0 -> {
asmgen.out("""
lda $varname
beq $endLabel
dec $varname
dec $varname""")
asmgen.jmp(loopLabel)
}
1 -> asmgen.out("""
dec $varname
beq $endLabel
dec $varname
bne $loopLabel""")
dec $varname
beq $endLabel
dec $varname
bne $loopLabel""")
else -> asmgen.out("""
dec $varname
dec $varname
lda $varname
cmp #${range.last-2}
bne $loopLabel""")
dec $varname
dec $varname
lda $varname
cmp #${range.last-2}
bne $loopLabel""")
}
}
else -> {
@ -413,8 +414,8 @@ $loopLabel""")
beq $endLabel
clc
adc #${range.step}
sta $varname
jmp $loopLabel""")
sta $varname""")
asmgen.jmp(loopLabel)
}
}
asmgen.out(endLabel)
@ -450,9 +451,9 @@ $loopLabel""")
sta $varname
lda $varname+1
adc #>${range.step}
sta $varname+1
jmp $loopLabel
$endLabel""")
sta $varname+1""")
asmgen.jmp(loopLabel)
asmgen.out(endLabel)
}
}
}
@ -502,9 +503,9 @@ $loopLabel""")
asmgen.out("""
lda $varname
beq $endLabel
dec $varname
jmp $loopLabel
$endLabel""")
dec $varname""")
asmgen.jmp(loopLabel)
asmgen.out(endLabel)
}
1 -> {
asmgen.out("""
@ -545,9 +546,9 @@ $loopLabel""")
beq $endLabel
+ inc $varname
bne $loopLabel
inc $varname+1
jmp $loopLabel
$endLabel""")
inc $varname+1""")
asmgen.jmp(loopLabel)
asmgen.out(endLabel)
asmgen.loopEndLabels.pop()
}
@ -573,9 +574,9 @@ $loopLabel""")
+ lda $varname
bne +
dec $varname+1
+ dec $varname
jmp $loopLabel
$endLabel""")
+ dec $varname""")
asmgen.jmp(loopLabel)
asmgen.out(endLabel)
asmgen.loopEndLabels.pop()
}