[LLVMbugs] [Bug 433] NEW: Avoid running tablegen if not necessary

bugzilla-daemon at cs.uiuc.edu bugzilla-daemon at cs.uiuc.edu
Tue Aug 31 10:51:25 PDT 2004


           Summary: Avoid running tablegen if not necessary
           Product: Build scripts
           Version: cvs
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Makefiles
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: rspencer at x10sys.com

The rules for tablegen cause it to be run everytime you do a make. This causes
all Targets to rebuild at least their code emitter portions and slows down every
top level build. We need to fix the rules so that tablegen only runs if the *.td
files are newer than the code they generate.

I could whine about automake here, but I won't :)

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