Nikita Popov de2b6cb6ab [InstCombine] Fold icmp over select of cmp more aggressively (#105536) ...

When folding an icmp into a select, treat an icmp of a constant with a
one-use ucmp/scmp intrinsic as a simplification. These comparisons will
reduce down to an icmp.

This addresses a regression seen in Rust and also in llvm-opt-benchmark.

2024-08-22 09:47:35 +02:00

328 KiB

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