[READ-ONLY] Mirror of https://github.com/bombshell-dev/tty. Platform independent 2D layout engine for terminal applications based on Clay
ref(opt): build input.wasm for size
layout.wasm must stay -O2: Clay_EndLayout is the render hot path and its
speed on heavy layouts comes from -O2's inlining/unrolling. -Os/-Oz both
regress dashboard/diff-render by 24-32% (CodSpeed), so size-optimizing it
is a net loss. input.wasm is opt-insensitive in the benchmarks, so build
it -Oz for a free size win. Levels stay overridable via LAYOUT_OPT/INPUT_OPT.
Nate Moore
(Jun 1, 2026, 3:41 PM -0500)
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Makefile
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Makefile
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CC = clang
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CFLAGS = --target=wasm32 -nostdlib -O2 \
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-ffunction-sections -fdata-sections \
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-mbulk-memory \
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-DCLAY_IMPLEMENTATION -DCLAY_WASM \
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-Isrc -I.
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# Per-module optimization levels. layout.wasm holds Clay_EndLayout (~33% of the
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# code and the entire render hot path); on heavy layouts its speed comes from the
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# inlining/unrolling that only -O2+ does — -Os/-Oz regress dashboard/diff-render
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# by 24-32%, so layout must stay -O2. input.wasm is the trie + input state machine,
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# whose benchmarks are insensitive to opt level, so it is built -Oz for size.
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# Override on the command line to A/B on CodSpeed, e.g. `make LAYOUT_OPT=-O3`.
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LAYOUT_OPT ?= -O2
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INPUT_OPT ?= -Oz
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CFLAGS_BASE = --target=wasm32 -nostdlib \
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-ffunction-sections -fdata-sections \
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-mbulk-memory \
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-Isrc -I.
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LAYOUT_CFLAGS = $(CFLAGS_BASE) $(LAYOUT_OPT) -DCLAY_IMPLEMENTATION -DCLAY_WASM
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INPUT_CFLAGS = $(CFLAGS_BASE) $(INPUT_OPT)
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LDFLAGS_COMMON = -Wl,--no-entry \
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-Wl,--import-memory \
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@echo "Built input.wasm ($$(wc -c < input.wasm) bytes raw, $$(gzip -c input.wasm | wc -c) bytes gzip)"
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layout.wasm: $(DEPS)
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$(CC) $(CFLAGS) $(LAYOUT_LDFLAGS) -o $@ src/module-layout.c
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$(CC) $(LAYOUT_CFLAGS) $(LAYOUT_LDFLAGS) -o $@ src/module-layout.c
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input.wasm: $(DEPS)
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$(CC) $(filter-out -DCLAY_IMPLEMENTATION -DCLAY_WASM, $(CFLAGS)) $(INPUT_LDFLAGS) -o $@ src/module-input.c
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$(CC) $(INPUT_CFLAGS) $(INPUT_LDFLAGS) -o $@ src/module-input.c
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layout.wasm.ts: layout.wasm
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deno run --allow-read --allow-write tasks/bundle-wasm.ts layout.wasm layout.wasm.ts