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Nobuyoshi Nakada
74856fbfb6
Keyword tracking only needs membership, so replace identity hashes with identity sets to avoid storing unused values. Add `rb_set_p` for the type assertion in `vm_check_keyword`. Add benchmarks for 31, 32 and 128 keyword parameters with sparse and dense dynamic defaults, using both direct keywords and keyword splats. The 31-parameter cases provide a bitmask-only control. Local arm64 macOS measurements show about 16-26% higher throughput with many omitted dynamic defaults at 32 and 128 parameters. Smaller differences remain noisy, including in the bitmask-only controls. The tracking container is created at call time, leaving IBF and `ISeq#to_a` unchanged. Verify IBF-loaded calls with the Integer refinement and colliding keyword indices from [Bug #22335].
29 lines
1.1 KiB
YAML
29 lines
1.1 KiB
YAML
# 31 keywords use the bitmask; 32 and 128 exercise the overflow container.
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# Sparse defaults are dynamic only for the last two keywords; dense defaults
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# are all dynamic. Reuse an object to avoid allocating default values.
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prelude: |
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DEFAULT = Object.new
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kwargs = {k0: 0}
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[31, 32, 128].each do |n|
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[:sparse, :dense].each do |kind|
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params = n.times.map do |i|
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default = kind == :dense || i >= n - 2 ? "DEFAULT" : "0"
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"k#{i}: #{default}"
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end
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eval "def many_#{n}_#{kind}(#{params.join(", ")}); end"
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end
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end
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benchmark:
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kw_31_sparse: "many_31_sparse(k0: 0)"
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kwsplat_31_sparse: "many_31_sparse(**kwargs)"
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kw_31_dense: "many_31_dense(k0: 0)"
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kwsplat_31_dense: "many_31_dense(**kwargs)"
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kw_32_sparse: "many_32_sparse(k0: 0)"
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kwsplat_32_sparse: "many_32_sparse(**kwargs)"
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kw_32_dense: "many_32_dense(k0: 0)"
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kwsplat_32_dense: "many_32_dense(**kwargs)"
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kw_128_sparse: "many_128_sparse(k0: 0)"
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kwsplat_128_sparse: "many_128_sparse(**kwargs)"
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kw_128_dense: "many_128_dense(k0: 0)"
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kwsplat_128_dense: "many_128_dense(**kwargs)"
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