search for: randyc

...ndy From: Xinliang David Li [mailto:xinliangli at gmail.com] Sent: Wednesday, May 27, 2015 12:53 PM To: Randy Chapman Cc: Lee Hunt; llvmdev at cs.uiuc.edu Subject: Re: FW: [LLVMdev] Capabilities of Clang's PGO (e.g. improving code density) On Wed, May 27, 2015 at 12:40 PM, Randy Chapman <randyc at microsoft.com<mailto:randyc at microsoft.com>> wrote: Hi David! Thanks again for your help! I was wondering if you could clarify one thing for me? I find mention of “hot arc” optimization (-fprofile-arcs) , but I’m unclear if this is the same thing. Does Clang PGO do block reorderi...

...xinliangli at gmail.com] Sent: Wednesday, May 27, 2015 12:53 PM To: Randy Chapman Cc: Lee Hunt; llvmdev at cs.uiuc.edu<mailto:llvmdev at cs.uiuc.edu> Subject: Re: FW: [LLVMdev] Capabilities of Clang's PGO (e.g. improving code density) On Wed, May 27, 2015 at 12:40 PM, Randy Chapman <randyc at microsoft.com<mailto:randyc at microsoft.com>> wrote: Hi David! Thanks again for your help! I was wondering if you could clarify one thing for me? I find mention of “hot arc” optimization (-fprofile-arcs) , but I’m unclear if this is the same thing. Does Clang PGO do block reorderi...

Hi David! Thanks again for your help! I was wondering if you could clarify one thing for me? I find mention of “hot arc” optimization (-fprofile-arcs) , but I’m unclear if this is the same thing. Does Clang PGO do block reordering? It does reordering, but does not do splitting/partitioning. I take this to mean that PGO does block reordering within the function? I don’t see that the clang

Thanks! CIL [LeeHu] for a few comments… From: Xinliang David Li [mailto:xinliangli at gmail.com] Sent: Wednesday, May 27, 2015 9:29 AM To: Lee Hunt Cc: llvmdev at cs.uiuc.edu Subject: Re: [LLVMdev] Capabilities of Clang's PGO (e.g. improving code density) On Tue, May 26, 2015 at 8:47 PM, Lee Hunt <leehu at exchange.microsoft.com<mailto:leehu at exchange.microsoft.com>> wrote: