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smpool
2008 Apr 17
0
[LLVMdev] flag_unit_at_a_time and pass scheduling in llvm-gcc
On Thu, 17 Apr 2008, Duncan Sands wrote:
>>> I thought I understood why but it seems that I don't :)
>>
>> IMO, we should avoid using flag_unit_at_a_time here.
>
> given DannyB's explanation that this flag exists in gcc so that glibc
> works properly in spite of abusing ASM, perhaps this logic in llvm-backend
> also exists to ensure that glibc works?
I
2008 Apr 17
4
[LLVMdev] flag_unit_at_a_time and pass scheduling in llvm-gcc
Hi Devang,
> > this flag is used quite a bit in llvm-backend.cpp, for example:
> >
> > if (flag_unit_at_a_time) {
> > PM->add(createGlobalOptimizerPass()); // Optimize out
> > global vars
> > PM->add(createGlobalDCEPass()); // Remove unused
> > fns and globs
> >