<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;">Do you have more detailed information on how this change is causing performance regression?<div><br></div><div>Evan</div><div><br><div><div>On Feb 6, 2014, at 11:19 AM, Gerolf Hoflehner <<a href="mailto:ghoflehner@apple.com">ghoflehner@apple.com</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><meta http-equiv="Content-Type" content="text/html charset=us-ascii"><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;">Hi Chandler<div><br></div><div>your commit seems to cause a major regression (>20%) on loop_unroll and other benchmarks as well. This is ( at least) on x86 under -O3 -flto and seems to be due to the loss of LICM. Please take a look.</div><div><br></div><div>Cheers</div><div>Gerolf</div><div><br></div><div><div style="margin: 0px; font-size: 18px; font-family: Menlo;">------------------------------------------------------------------------</div><div style="margin: 0px; font-size: 18px; font-family: Menlo;">r200067 | chandlerc | 2014-01-24 20:07:24 -0800 (Fri, 24 Jan 2014) | 44 lines</div><div style="margin: 0px; font-size: 18px; font-family: Menlo; min-height: 21px;"><br></div><div style="margin: 0px; font-size: 18px; font-family: Menlo;">[LPM] Make LCSSA a utility with a FunctionPass that applies it to all</div><div style="margin: 0px; font-size: 18px; font-family: Menlo;">the loops in a function, and teach LICM to work in the presance of</div><div style="margin: 0px; font-size: 18px; font-family: Menlo;">LCSSA.</div></div><div><br></div></div>_______________________________________________<br>llvm-commits mailing list<br><a href="mailto:llvm-commits@cs.uiuc.edu">llvm-commits@cs.uiuc.edu</a><br>http://lists.cs.uiuc.edu/mailman/listinfo/llvm-commits<br></blockquote></div><br></div></body></html>