[llvm-commits] [llvm] r56885 - in /llvm/trunk: include/llvm/Target/TargetLowering.h lib/CodeGen/SelectionDAG/SelectionDAG.cpp lib/Target/X86/X86ISelLowering.cpp lib/Target/X86/X86ISelLowering.h lib/Target/X86/X86Subtarget.cpp lib/Target/X86/X86Su

[Bill Wendling]

On Tue, Sep 30, 2008 at 2:49 PM, Devang Patel <dpatel at apple.com> wrote:
>
> On Sep 30, 2008, at 2:22 PM, Bill Wendling wrote:
>
>> Author: void
>> Date: Tue Sep 30 16:22:07 2008
>> New Revision: 56885
>>
>> URL: http://llvm.org/viewvc/llvm-project?rev=56885&view=rev
>> Log:
>> Add the new `-no-builtin' flag. This flag is meant to mimic the GCC
>> `-fno-builtin' flag. Currently, it's used to replace "memset" with
>> "_bzero"
>> instead of "__bzero" on Darwin10+. This arguably violates the
>> meaning of this
>> flag, but is currently sufficient. The meaning of this flag should
>> become more
>> specific over time.
>
> Is it possible encode this in IR as an attribute ?
>
> Right now this info. is lost during
> 1) llvm-gcc -c --emit-llvm -fno-builtin foo.c -o foo.bc && llc foo.bc -
> o foo.s
> 2) and LTO.
>
Sure! How do you do that? :-)

-bw