Claude 0b5470b054 codegen: skip parameter-spill prologue for leaf functions ... Leaf functions — those that never JSR another routine from inside their body — don't need to spill the `$04..$07` parameter transport slots into per-function RAM, because nothing inside the body clobbers those slots. Detect them in `IrCodeGen::new` via a linear scan over each function's IR ops, point their parameters at `$04..$07` directly in `var_addrs` (and in a parallel `leaf_param_overrides` map for inline-asm `{name}` substitution), and have `gen_function` skip the spill prologue. The "leaf" predicate is conservative: any of `IrOp::Call`, `Mul`, `Div`, `Mod`, `Transition`, or an inline-asm body containing a `JSR` token disqualifies the function. SetPalette / LoadBackground / PlaySfx / StartMusic / DebugLog / DebugAssert were verified by inspection to not emit JSRs. Per call to a leaf primitive: `LDA $04 / STA <local> / LDA $05 / STA <local+1>` is now omitted — saves 12 cycles and 12 bytes of code per call. Across the SHA-256 example's ~5500 leaf-primitive calls per block, that's ~66K cycles saved per compression — about 2.2 frames at NTSC. The fix also touches every committed `examples/*.nes` (the leaf prologue was emitted by every fun with params, not just the SHA ones), so 9 ROMs and the same three timing-sensitive goldens (war.png + platformer/pong/war audio hashes) get refreshed; the two committed gifs that drifted do too. Verified: cargo test/clippy/fmt clean on rustc 1.95.0; emulator harness 34/34; reproducibility diff clean; SHA-256 of "NES" still computes to AE9145DB…4E0D. https://claude.ai/code/session_01FRmSBruVWCufm3LsUVMs8v		2026-04-16 16:47:07 +00:00
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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	platformer: end-to-end side-scroller demo + three runtime bug fixes	2026-04-13 13:04:26 +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	tests/emulator: byte-exact golden-image diffs	2026-04-12 21:30:18 +00:00
bouncing_ball.audio.hash	tests/emulator: record audio goldens alongside screenshots	2026-04-12 22:33:48 +00:00
bouncing_ball.png	tests/emulator: byte-exact golden-image diffs	2026-04-12 21:30:18 +00:00
coin_cavern.audio.hash	tests/emulator: record audio goldens alongside screenshots	2026-04-12 22:33:48 +00:00
coin_cavern.png	tests/emulator: byte-exact golden-image diffs	2026-04-12 21:30:18 +00:00
comparisons.audio.hash	tests/emulator: record audio goldens alongside screenshots	2026-04-12 22:33:48 +00:00
comparisons.png	tests/emulator: byte-exact golden-image diffs	2026-04-12 21:30:18 +00:00
friendly_assets.audio.hash	language: pleasant asset syntax for palettes, CHR, bg, sfx, music	2026-04-13 16:09:53 +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	tests/emulator: byte-exact golden-image diffs	2026-04-12 21:30:18 +00:00
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	tests/emulator: byte-exact golden-image diffs	2026-04-12 21:30:18 +00:00
match_demo.audio.hash	tests/emulator: record audio goldens alongside screenshots	2026-04-12 22:33:48 +00:00
match_demo.png	tests/emulator: byte-exact golden-image diffs	2026-04-12 21:30:18 +00:00
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	tests/emulator: byte-exact golden-image diffs	2026-04-12 21:30:18 +00:00
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	tests/emulator: byte-exact golden-image diffs	2026-04-12 21:30:18 +00:00
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	audio: always enable all four tone channels on sfx trigger	2026-04-14 12:09:46 +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	codegen: skip parameter-spill prologue for leaf functions	2026-04-16 16:47:07 +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	codegen: skip parameter-spill prologue for leaf functions	2026-04-16 16:47:07 +00:00
pong.png	examples/pong: production-quality Pong game with powerups and multi-ball	2026-04-16 01:25:29 +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	tests/emulator: byte-exact golden-image diffs	2026-04-12 21:30:18 +00:00
sfx_pitch_envelope.audio.hash	audio: per-frame pitch envelopes for pulse SFX	2026-04-15 02:54:56 +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	tests/emulator: byte-exact golden-image diffs	2026-04-12 21:30:18 +00:00
state_machine.audio.hash	tests/emulator: record audio goldens alongside screenshots	2026-04-12 22:33:48 +00:00
state_machine.png	tests/emulator: byte-exact golden-image diffs	2026-04-12 21:30:18 +00:00
structs_enums_for.audio.hash	tests/emulator: record audio goldens alongside screenshots	2026-04-12 22:33:48 +00:00
structs_enums_for.png	tests/emulator: byte-exact golden-image diffs	2026-04-12 21:30:18 +00:00
two_player.audio.hash	tests/emulator: record audio goldens alongside screenshots	2026-04-12 22:33:48 +00:00
two_player.png	tests/emulator: byte-exact golden-image diffs	2026-04-12 21:30:18 +00:00
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	codegen: skip parameter-spill prologue for leaf functions	2026-04-16 16:47:07 +00:00
war.png	examples: regenerate ROMs, gifs, and goldens after codegen local fix	2026-04-16 16:12:46 +00:00