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36 lines
598 B
NASM
36 lines
598 B
NASM
// Tests optimization of identical sub-expressions
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// The two examples of i*2 is detected as identical leading to optimized ASM where *2 is only calculated once
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.pc = $801 "Basic"
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:BasicUpstart(main)
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.pc = $80d "Program"
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main: {
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.label _1 = 4
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.label screen = 2
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lda #<$400
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sta.z screen
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lda #>$400
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sta.z screen+1
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ldx #0
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b1:
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txa
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asl
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sta.z _1
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ldy #0
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sta (screen),y
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inc.z screen
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bne !+
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inc.z screen+1
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!:
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lda.z _1
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ldy #0
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sta (screen),y
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inc.z screen
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bne !+
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inc.z screen+1
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!:
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inx
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cpx #3
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bne b1
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rts
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}
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