Ruby

merge revision(s) 1f115f141dd17f75049a5e17107906c5bcc372e1: [Backport #19246]

 Speed up rebuilding the loaded feature index Rebuilding the loaded feature index slowed down with the bug fix for #17885 in 79a4484a072e9769b603e7b4fbdb15b1d7eccb15. The slowdown was extreme if realpath emulation was used, but even when not emulated, it could be about 10x slower. This adds loaded_features_realpath_map to rb_vm_struct. This is a hidden hash mapping loaded feature paths to realpaths. When rebuilding the loaded feature index, look at this hash to get cached realpath values, and skip calling rb_check_realpath if a cached value is found. Fixes [Bug #19246] --- load.c | 27 +++++++++++++++++++++++---- vm.c | 2 ++ vm_core.h | 1 + 3 files changed, 26 insertions(+), 4 deletions(-)