[LLVMbugs] [Bug 835] NEW: trivially changing tblgen causes tons of stuff to rebuildÂ

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=835

           Summary: trivially changing tblgen causes tons of stuff to
                    rebuild 
           Product: Build scripts
           Version: 1.7
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: Makefiles
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: sabre at nondot.org


Instructions.gen depends on tblgen, and lots of stuff uses intrinsics.gen.  We should do the "only if bytes 
actually changed" trick like the code generators do to avoid rebuilding everything.

-Chris



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