Displaying 4 results from an estimated 4 matches for "isbaseaddressknownzero".
2011 Mar 10
3
[LLVMdev] Detrimental optimization for reducing relocations.
...nter and the method EmitSectionOffset which
contains this code:
--------------------------------------------------------------------------------
// If the section in question will end up with an address of 0 anyway, we can
// just emit an absolute reference to save a relocation.
if (Section.isBaseAddressKnownZero()) {
OutStreamer.EmitSymbolValue(Label, 4, 0/*AddrSpace*/);
return;
}
// Otherwise, emit it as a label difference from the start of the section.
EmitLabelDifference(Label, SectionLabel, 4);
}
--------------------------------------------------------------------------------
isBaseAddrf...
2011 Mar 10
0
[LLVMdev] Detrimental optimization for reducing relocations.
> So, clearly the optimization is making things worse. Would it be okay to delete
> this code and eliminate the isBaseAddressKnownZero? I would like to get rid of
> it.
I think it is OK. I can see ld/gdb expecting a relocation, but if that
is the case we should just have a flag saying it is needed.
If you are really motivated to check it, run the gdb testsuite with your
patch, but on ELF our debug info is still too big to b...
2011 Mar 10
2
[LLVMdev] Detrimental optimization for reducing relocations.
...om>
> To: llvmdev at cs.uiuc.edu
> Sent: Thu, March 10, 2011 4:22:32 PM
> Subject: Re: [LLVMdev] Detrimental optimization for reducing relocations.
>
> > So, clearly the optimization is making things worse. Would it be okay to
>delete
> > this code and eliminate the isBaseAddressKnownZero? I would like to get rid
>of
> > it.
>
> I think it is OK. I can see ld/gdb expecting a relocation, but if that
> is the case we should just have a flag saying it is needed.
>
> If you are really motivated to check it, run the gdb testsuite with your
> patch, but...
2011 Mar 11
1
[LLVMdev] Detrimental optimization for reducing relocations.
...m>
> To: llvmdev at cs.uiuc.edu
> Sent: Thu, March 10, 2011 4:22:32 PM
> Subject: Re: [LLVMdev] Detrimental optimization for reducing relocations.
>
> > So, clearly the optimization is making things worse. Would it be okay to
>delete
> > this code and eliminate the isBaseAddressKnownZero? I would like to get rid
>of
> > it.
>
> I think it is OK. I can see ld/gdb expecting a relocation, but if that
> is the case we should just have a flag saying it is needed.
>
> If you are really motivated to check it, run the gdb testsuite with your
> patch, but...