[LLVMbugs] [Bug 16957] New: Generation of PLT code isn't working for ARM

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=16957

            Bug ID: 16957
           Summary: Generation of PLT code isn't working for ARM
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: Backend: ARM
          Assignee: unassignedbugs at nondot.org
          Reporter: gkeiser at arxan.com
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

For ARM targets on linux, revision 183966 made Fast ISel default.  
Unfortunately, Fast ISel is broken in terms of applying the ARMII::MO_PLT flags
to calls in PIC mode (at least when emitting assembly);  it never does this. 
The normal ISel pass handles this  situation correctly so a temporary local
change to disable FastISel for linux / NaCl targets is working for me right
now.  

Repro:  Lower any code to assembly, (PLT) will be missing from calls.

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