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authorbors <bors@rust-lang.org>2024-04-05 11:11:17 +0000
committerbors <bors@rust-lang.org>2024-04-05 11:11:17 +0000
commit4563f70c3b599411836e285591479f4a3d364708 (patch)
tree04fd2d439f560c04e883e509f78cd9de2d2ada35 /compiler/rustc_codegen_cranelift/build_system/utils.rs
parentd009f60b55fe4527e7ddf122bc4520f351d7b9d4 (diff)
parentaa9c9a36c06ac33275be60b840d1b954f8b1eac3 (diff)
downloadrust-4563f70c3b599411836e285591479f4a3d364708.tar.gz
rust-4563f70c3b599411836e285591479f4a3d364708.zip
Auto merge of #122070 - Zoxc:dep-edges-from-previous, r=cjgillot
Encode dep graph edges directly from the previous graph when promoting

This encodes dep graph edges directly from the previous graph when promoting nodes from a previous session, avoiding allocations / copies.

~~Based on https://github.com/rust-lang/rust/pull/122064 and https://github.com/rust-lang/rust/pull/116375.~~

<table><tr><td rowspan="2">Benchmark</td><td colspan="1"><b>Before</b></th><td colspan="2"><b>After</b></th></tr><tr><td align="right">Time</td><td align="right">Time</td><td align="right">%</th></tr><tr><td>🟣 <b>clap</b>:check:unchanged</td><td align="right">0.4177s</td><td align="right">0.4072s</td><td align="right">💚  -2.52%</td></tr><tr><td>🟣 <b>hyper</b>:check:unchanged</td><td align="right">0.1430s</td><td align="right">0.1420s</td><td align="right"> -0.69%</td></tr><tr><td>🟣 <b>regex</b>:check:unchanged</td><td align="right">0.3106s</td><td align="right">0.3038s</td><td align="right">💚  -2.19%</td></tr><tr><td>🟣 <b>syn</b>:check:unchanged</td><td align="right">0.5823s</td><td align="right">0.5688s</td><td align="right">💚  -2.33%</td></tr><tr><td>🟣 <b>syntex_syntax</b>:check:unchanged</td><td align="right">1.3992s</td><td align="right">1.3692s</td><td align="right">💚  -2.14%</td></tr><tr><td>Total</td><td align="right">2.8528s</td><td align="right">2.7910s</td><td align="right">💚  -2.17%</td></tr><tr><td>Summary</td><td align="right">1.0000s</td><td align="right">0.9803s</td><td align="right">💚  -1.97%</td></tr></table>
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