Metal: Skip array index clamp for constant values Do not wrap constant array indices with ANGLE_int_clamp when their values could be statically validated. Fixed: angleproject:8488 Change-Id: I3ad183475e1847cb7db1a07df3598c7d39767d7e Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/5220233 Reviewed-by: Geoff Lang <geofflang@chromium.org> Commit-Queue: Alexey Knyazev <lexa.knyazev@gmail.com> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>