[TargetParser][cmake] Be Smarter about TableGen Deps #144848
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This tries to be a bit smarter for the OLD behaviour of CMP0116, to glob more relevant directories looking for possible dependencies. The changes are: - Remove some duplication of lines in the `tablegen` function. - Put CURRENT_SOURCE_DIR into `tblgen_includes` (at the front) - Glob all directories in `tblgen_includes` - Give up on `local_tds` which was wrong when using tablegen to compile a file in a different directory (as TargetParser does) - Use `EXTRA_INCLUDES` in TargetParser `tablegen` calls. This is still an under-approximation of what might be included, at least comparing the RISCVTargetParserDef.inc.d (after building `target_parser_gen`), and the list of deps in the ninja file when explicitly setting CMP0116 to OLD. Fixes llvm#144639
tclin914
reviewed
Jun 19, 2025
| # Filter out any empty include items. | ||
| list(REMOVE_ITEM tblgen_includes "") | ||
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| # Build the absolute path for the current input file. |
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This tries to be a bit smarter for the OLD behaviour of CMP0116, to glob more relevant directories looking for possible dependencies.
The changes are:
tablegenfunction.tblgen_includes(at the front)tblgen_includeslocal_tdswhich was wrong when using tablegen to compile a file in a different directory (as TargetParser does)EXTRA_INCLUDESin TargetParsertablegencalls.This is still an under-approximation of what might be included, at least comparing the RISCVTargetParserDef.inc.d (after building
target_parser_gen), and the list of deps in the ninja file when explicitly setting CMP0116 to OLD.Fixes #144639