Improvements in resource conflict detection related to slots #1532

Job	Run time
Test upstream llvm,clang / Lit Tests (ubuntu-22.04)	38m 42s
Test upstream llvm,clang / Lit Tests (windows-2019)	1h 18m 25s
Test upstream lld / Lit Tests (ubuntu-22.04)	9m 6s
Test upstream lld / Lit Tests (windows-2019)	16m 41s
	2h 22m 54s

Provide feedback