Commit: See in git+ssh://linaroci@gcc.gnu.org/git/gcc.git
gcc patch https://patchwork.sourceware.org/patch/139058
Author: Patrick Palka <ppalka@redhat.com>
Date:   Mon Jul 13 11:22:16 2026 -0400

    [PATCH] libstdc++: Optimize flat_map range insertion for pair-like elements
    
    Tested on x86_64-pc-linux-gnu, does this look OK for trunk and perhaps 16?
    I'm not sure if it's worth avoiding dereferencing *__first twice in this
    special case, but I figured we might as well?
... 12 lines of the commit log omitted.
... applied on top of baseline commit:
210be97619b Revert "x86: Rewrite ix86_find_max_used_stack_alignment"

* tcwg_gcc_build
** master-aarch64
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