[LLVMbugs] [Bug 4161] New: need to pass codegen options through to lto

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=4161

           Summary: need to pass codegen options through to lto
           Product: tools
           Version: trunk
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: lto
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: nicholas at mxc.ca
                CC: rafael.espindola at gmail.com, llvmbugs at cs.uiuc.edu


Some LTO options such as PIC and FP elimination should be passed from the
frontend through to the backend. For debugging, it'd be nice to pass -fast
through too.

Some of the options (like target triple) are stored in the .bc, but we need to
sort out what options go where and how we make them flow through from llvm-gcc
to the gold plugin, into libLTO and make it all the way to codegen. Every
option that llvm-gcc supports should probably have a matching option unless
it's in the bitcode.


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