Require all dirty_MUT_VAR callers to do explicit stg_MUT_VAR_CLEAN_info comparison (#20088)
Implements proposed optimization in #20088 (closed)
- remove the
stg_MUT_VAR_CLEAN_info
comparison indirty_MUT_VAR
- add this explicit check in code generated for
writeMutVar
primop - no need to touch other consumers (in PrimOp.cmm) since the explicit check is already inplace