Claude 033d399565 runtime: gate __multiply / __divide on usage markers ... Drop __mul_used from IrOp::Mul codegen and __div_used from IrOp::Div / IrOp::Mod codegen (modulo reuses the same routine). The linker skips gen_multiply / gen_divide for programs that never emit the markers, following the same pattern already used by __audio_used / __ppu_update_used / __sprite_cycle_used. The optimizer already rewrites multiplies and divides by constant powers of two into shifts (and modulo by constant powers of two into masks), so the markers only fire for genuinely runtime math. A program like `examples/comparisons.ne` that never multiplies or divides now reclaims ~56 bytes of PRG; programs that use only one of the two reclaim the other's share. Audio goldens flip for every example that uses audio. The .ne sources are unchanged and the pixel goldens are byte-identical — the audio stream differs only because removing the math routines shifts the audio tick's absolute address in PRG by 56 bytes, which changes which of its internal branches cross 6502 page boundaries and therefore the per-frame cycle count of a single NMI by 1-5 clocks. Over 180 frames the accumulated drift shifts APU register write timing enough to render a different digital sample stream at the same logical wave shape. Expected consequence of ROM-layout change under cycle-accurate emulation; documented path per CLAUDE.md "Updating goldens". https://claude.ai/code/session_016kM6P7PukktBDqTZexrrAN		2026-04-16 21:15:08 +00:00
..
arrays_and_functions.audio.hash	tests/emulator: record audio goldens alongside screenshots	2026-04-12 22:33:48 +00:00
arrays_and_functions.png	compiler: fix three scoping bugs; war: revert all local/param workarounds	2026-04-15 20:33:41 +00:00
audio_demo.audio.hash	runtime: gate __multiply / __divide on usage markers	2026-04-16 21:15:08 +00:00
audio_demo.png	tests/emulator: record audio goldens alongside screenshots	2026-04-12 22:33:48 +00:00
auto_chr_background.audio.hash	assets: auto-generate CHR data from @nametable() PNG sources	2026-04-15 03:29:58 +00:00
auto_chr_background.png	assets: auto-generate CHR data from @nametable() PNG sources	2026-04-15 03:29:58 +00:00
bitwise_ops.audio.hash	tests/emulator: record audio goldens alongside screenshots	2026-04-12 22:33:48 +00:00
bitwise_ops.png
bouncing_ball.audio.hash	tests/emulator: record audio goldens alongside screenshots	2026-04-12 22:33:48 +00:00
bouncing_ball.png
coin_cavern.audio.hash	tests/emulator: record audio goldens alongside screenshots	2026-04-12 22:33:48 +00:00
coin_cavern.png
comparisons.audio.hash	tests/emulator: record audio goldens alongside screenshots	2026-04-12 22:33:48 +00:00
comparisons.png
friendly_assets.audio.hash	runtime: gate __multiply / __divide on usage markers	2026-04-16 21:15:08 +00:00
friendly_assets.png	language: pleasant asset syntax for palettes, CHR, bg, sfx, music	2026-04-13 16:09:53 +00:00
function_chain.audio.hash	tests/emulator: record audio goldens alongside screenshots	2026-04-12 22:33:48 +00:00
function_chain.png	tests/emulator: record audio goldens alongside screenshots	2026-04-12 22:33:48 +00:00
hello_sprite.audio.hash	tests/emulator: record audio goldens alongside screenshots	2026-04-12 22:33:48 +00:00
hello_sprite.png
inline_asm_demo.audio.hash	tests/emulator: record audio goldens alongside screenshots	2026-04-12 22:33:48 +00:00
inline_asm_demo.png	codegen: reuse analyzer's local allocations so inline asm {param} works	2026-04-16 16:03:10 +00:00
logic_ops.audio.hash	tests/emulator: record audio goldens alongside screenshots	2026-04-12 22:33:48 +00:00
logic_ops.png	tests/emulator: record audio goldens alongside screenshots	2026-04-12 22:33:48 +00:00
loop_break_continue.audio.hash	tests/emulator: record audio goldens alongside screenshots	2026-04-12 22:33:48 +00:00
loop_break_continue.png
match_demo.audio.hash	tests/emulator: record audio goldens alongside screenshots	2026-04-12 22:33:48 +00:00
match_demo.png
metasprite_demo.audio.hash	parser/lowering: declarative metasprites for multi-tile sprite groups	2026-04-15 03:13:30 +00:00
metasprite_demo.png	parser/lowering: declarative metasprites for multi-tile sprite groups	2026-04-15 03:13:30 +00:00
mmc1_banked.audio.hash	tests/emulator: record audio goldens alongside screenshots	2026-04-12 22:33:48 +00:00
mmc1_banked.png
mmc3_per_state_split.audio.hash	main: write the real mapper byte into the iNES header	2026-04-13 01:27:42 +00:00
mmc3_per_state_split.png
nested_structs.audio.hash	analyzer/lowering: support nested struct fields and array struct fields	2026-04-15 02:19:49 +00:00
nested_structs.png	analyzer/lowering: support nested struct fields and array struct fields	2026-04-15 02:19:49 +00:00
noise_triangle_sfx.audio.hash	runtime: gate __multiply / __divide on usage markers	2026-04-16 21:15:08 +00:00
noise_triangle_sfx.png	audio: triangle and noise sfx channels	2026-04-14 10:42:53 +00:00
palette_and_background.audio.hash	palette/background: first-class declarations with reset-time load and runtime swaps	2026-04-13 11:11:33 +00:00
palette_and_background.png	palette/background: first-class declarations with reset-time load and runtime swaps	2026-04-13 11:11:33 +00:00
platformer.audio.hash	runtime: gate __multiply / __divide on usage markers	2026-04-16 21:15:08 +00:00
platformer.png	feat(platformer): add stomp-or-die enemy collisions, live HUD, GameOver state	2026-04-13 20:23:07 +00:00
pong.audio.hash	runtime: gate __multiply / __divide on usage markers	2026-04-16 21:15:08 +00:00
pong.png	codegen: fuse compare-then-branch to drop boolean materialization	2026-04-16 17:10:02 +00:00
scanline_split.audio.hash	main: write the real mapper byte into the iNES header	2026-04-13 01:27:42 +00:00
scanline_split.png
sfx_pitch_envelope.audio.hash	codegen: fuse compare-then-branch to drop boolean materialization	2026-04-16 17:10:02 +00:00
sfx_pitch_envelope.png	audio: per-frame pitch envelopes for pulse SFX	2026-04-15 02:54:56 +00:00
sha256.audio.hash	examples/sha256: interactive SHA-256 hasher with on-screen keyboard	2026-04-16 14:02:58 +00:00
sha256.png	examples/sha256: interactive SHA-256 hasher with on-screen keyboard	2026-04-16 14:02:58 +00:00
sprite_flicker_demo.audio.hash	sprite-per-scanline: add cycle_sprites runtime flicker + debug telemetry	2026-04-15 22:07:19 +00:00
sprite_flicker_demo.png	sprite-per-scanline: add cycle_sprites runtime flicker + debug telemetry	2026-04-15 22:07:19 +00:00
sprites_and_palettes.audio.hash	tests/emulator: record audio goldens alongside screenshots	2026-04-12 22:33:48 +00:00
sprites_and_palettes.png
state_machine.audio.hash	tests/emulator: record audio goldens alongside screenshots	2026-04-12 22:33:48 +00:00
state_machine.png
structs_enums_for.audio.hash	tests/emulator: record audio goldens alongside screenshots	2026-04-12 22:33:48 +00:00
structs_enums_for.png
two_player.audio.hash	tests/emulator: record audio goldens alongside screenshots	2026-04-12 22:33:48 +00:00
two_player.png
uxrom_banked.audio.hash	examples: add uxrom_banked and jsnes golden	2026-04-13 02:04:25 +00:00
uxrom_banked.png	examples: add uxrom_banked and jsnes golden	2026-04-13 02:04:25 +00:00
uxrom_banked_to_banked.audio.hash	codegen: support banked → banked cross-bank function calls	2026-04-15 02:37:19 +00:00
uxrom_banked_to_banked.png	codegen: support banked → banked cross-bank function calls	2026-04-15 02:37:19 +00:00
uxrom_user_banked.audio.hash	codegen: user code in switchable banks via cross-bank trampolines	2026-04-14 11:41:20 +00:00
uxrom_user_banked.png	codegen: user code in switchable banks via cross-bank trampolines	2026-04-14 11:41:20 +00:00
war.audio.hash	runtime: gate __multiply / __divide on usage markers	2026-04-16 21:15:08 +00:00
war.png	examples: regenerate ROMs, gifs, and goldens after codegen local fix	2026-04-16 16:12:46 +00:00