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authorbors <bors@rust-lang.org>2021-06-10 10:06:58 +0000
committerbors <bors@rust-lang.org>2021-06-10 10:06:58 +0000
commit0279cb11ed98bdc589c66572477fd27f1dd3e0ac (patch)
treeb4a6de143b517dc585c2381161cc378e37d92076 /library/std/src/sys/unix/process/process_unix.rs
parentc5fbcd35a8217a17f6b63a22217ace06cf8f5f02 (diff)
parent4237a052330ddc39fc458b42238bdc50c8584d73 (diff)
downloadrust-0279cb11ed98bdc589c66572477fd27f1dd3e0ac.tar.gz
rust-0279cb11ed98bdc589c66572477fd27f1dd3e0ac.zip
Auto merge of #85741 - tmiasko:ssa, r=nagisa
Use preorder traversal when checking for SSA locals

Traverse blocks in topological sort of dominance partial order, to ensure that
local analyzer correctly identifies locals that are already in static single
assignment form, while avoiding dependency on implicit numeric order of blocks.

When rebuilding the standard library, this change reduces the number of locals
that require an alloca from 62452 to 62348.
Diffstat (limited to 'library/std/src/sys/unix/process/process_unix.rs')
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