Actual TNZ peephole can be extended for one more
It should help to sdcc_divulong
replace restart {
ld (%1, %2), a
tnz a
} by {
ld (%1, %2), a
}
In 3.8.0 srl (x) / inc (x) do redundant loads/store
00102$:
; huffman_iterative.c: 32: state->bit++;
ldw x, (0x05, sp)
ld a, (x) ; <------ next 3 lines in 3.7.2 was just "inc (x)"
inc a
ld (x), a
; huffman_iterative.c: 34: if(!(state->buffer & 0x01)) /* Left */
ldw x, (0x0a, sp)
ld a, (x)
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