add a environment variable to control SlashShrink

Signed-off-by: xiehuc <xiehuc@gmail.com>
keep callgraph

Signed-off-by: xiehuc <xiehuc@gmail.com>
fix store inst removed accidently

当StoreInst的两个操作数都mark的时候,则该StoreInst是重要的,需要mark

Signed-off-by: xiehuc <xiehuc@gmail.com>
add valur profiling for mini core

Signed-off-by: xiehuc <xiehuc@gmail.com>