[Patch][Review Request][llvm-link] Fix One Performance Bug

Wan, Xiaofei xiaofei.wan at intel.com
Mon Apr 29 07:43:24 PDT 2013


+1.  I don't think that we need to change Module.  LTO compilation of xalan does not take 30 minutes, so I imagine that this is a problem with llvm-link.

For xalan, the linking time is about 30 seconds, not 30 minutes, after this fix, it is 2 seconds

For sure, the issue exists in llvm-link; I don't see llvm-link is often used, but this is often used in our business.


Thanks
Wan Xiaofei
From: Nadav Rotem [mailto:nrotem at apple.com]
Sent: Monday, April 29, 2013 11:01 AM
To: Du Toit, Stefanus
Cc: Wan, Xiaofei; llvm-commits at cs.uiuc.edu
Subject: Re: [Patch][Review Request][llvm-link] Fix One Performance Bug


On Apr 28, 2013, at 6:44 PM, "Du Toit, Stefanus" <stefanus.du.toit at intel.com<mailto:stefanus.du.toit at intel.com>> wrote:


To be more specific, I think the allocation of this data structure belongs
in llvm-link itself.

+1.  I don't think that we need to change Module.  LTO compilation of xalan does not take 30 minutes, so I imagine that this is a problem with llvm-link.
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