[LLVMbugs] [Bug 2530] New: -fno-builtin-abs does not

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=2530

           Summary: -fno-builtin-abs does not
           Product: libraries
           Version: trunk
          Platform: PC
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Scalar Optimizations
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: dpatel at apple.com
                CC: llvmbugs at cs.uiuc.edu


GCC supports -fno-builtin-abs and other to selectively disable builtins. This
does not work sometimes because SimplifyLibCalls is not informed about this.

One solution is to use an attribute on call instruction.


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