llvm

d1ad52f0 - [flang][NFC] Remove unnecessary #include directives across flang (#207640)

[flang][NFC] Remove unnecessary #include directives across flang (#207640) Audit of every #include directive in flang/lib/ and flang/include/flang/: - Remove 423 #include directives (293 from lib/ translation units, 23 from lib-private headers, 107 from public headers) that are not needed: no entity declared by the removed header is used - directly or in any conditional-compilation branch (Windows, macOS, ARM/PowerPC, REAL(16)/REAL(2) configuration macros) - in the including file, and for headers no consumer in flang/lib, flang/tools, flang/unittests, or flang-rt relies on the include as a re-export. Load-bearing includes were examined and retained: textual .inc/.def expansions, tablegen pass-header declaration/definition pairings, dialect headers carrying generated-op interface dependencies, config-macro providers (e.g. float128.h ahead of matmul-instances.inc guards), and ADL formatting machinery (Evaluate/formatting.h). - Add 5 missing direct #includes in lib translation units that used entities only via now-removed transitive includes, and drop one vestigial 'using namespace Fortran::runtime;' whose declaring header no longer arrives transitively (nothing namespace-qualified from it was used), per the include rules in flang/docs/C++style.md. Assisted-by: AI