Significance:
========
[x] Aligned buffer access for scratch memory and scratch memory optimization.
Testing:
=====
[x] MSVS Conformance and CTS are passing.
[x] All previous fuzzer crashes are tested. No crash observed.
[x] For platforms, Conformance tested with different combinations.
[x] Tested Conformance with gcc builds for x86, x86_64, armv7 and armv8.
[x] Tested Conformance with clang builds with address and memory sanitizer flags for x86_64 and armv8.
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