[LLVMbugs] [Bug 1401] NEW: Targets should model flags explicitly

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=1401

           Summary: Targets should model flags explicitly
           Product: libraries
           Version: trunk
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: Common Code Generator Code
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: sabre at nondot.org


The various targets (x86, arm, ppc, etc) should model their effect on their flags register (EFLAGS, CR0, 
etc).  This will let us optimize these away, and is a dependency for various code motion optimizations at 
the machine instr level (scheduling, licm, etc).

-Chris



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