Improve performance and language support of memory initialization che… #7283

Job	Run time
documentation	2m 7s
benchcomp-tests	3m 38s
perf	29m 28s
regression (macos-13)	37m 32s
write-json-symtab-regression	14m 34s
regression (ubuntu-20.04)	21m 40s
regression (ubuntu-22.04)	21m 43s
regression (macos-14)	18m 35s
	2h 29m 17s

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