tree 536c5af37f50f0dd594713cb7c06ffeeba64fc37
parent a0c5124a50608595a9aadebc4297e854ebd32c53
author Jeffrey Yu <yuje@google.com> 1762453755 -0800
committer GN LUCI <gn-scoped@luci-project-accounts.iam.gserviceaccount.com> 1762505753 -0800

Optimize vector initialization and preallocation in desc_builder.cc.

This change adds `reserve()` calls to preallocate capacity, reducing
potential reallocations.

Change-Id: I51fdfdbdfaf512c102a36c7af1022c4b57af857f
Reviewed-on: https://gn-review.googlesource.com/c/gn/+/20060
Reviewed-by: Takuto Ikuta <tikuta@google.com>
Commit-Queue: David Turner <digit@google.com>
Reviewed-by: David Turner <digit@google.com>