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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Hi Chad & Stephen,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Attached is updated patch, which includes:<o:p></o:p></span></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><span style='mso-list:Ignore'>1.<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Complete test cases, which tests both wanted and unwanted transformations<o:p></o:p></span></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><span style='mso-list:Ignore'>2.<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>The transformation is guarded by a flag<o:p></o:p></span></p><p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><span style='mso-list:Ignore'>3.<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>More strict constraint: both the input and output are limited to float<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Any comments and suggestions are welcome.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Thanks,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Weiming<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Chad Rosier [mailto:mcrosier@apple.com] <br><b>Sent:</b> Wednesday, August 15, 2012 1:24 PM<br><b>To:</b> Weiming Zhao<br><b>Cc:</b> llvm-commits@cs.uiuc.edu<br><b>Subject:</b> Re: [llvm-commits] Fix Bug 13574: Add more double float shrinking optimizations<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks, Weiming. Once complete I'll give the patch a full review.<o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal> Chad<o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal>On Aug 15, 2012, at 1:13 PM, Weiming Zhao wrote:<o:p></o:p></p></div><p class=MsoNormal><br><br><o:p></o:p></p><div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>No problem. I can add one test case per function.</span><o:p></o:p></p></div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><o:p></o:p></p></div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Weiming</span><o:p></o:p></p></div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><o:p></o:p></p></div><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in;border-width:initial;border-color:initial'><div><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span class=apple-converted-space><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> </span></span><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Chad Rosier <a href="mailto:[mailto:mcrosier@apple.com]">[mailto:mcrosier@apple.com]</a><span class=apple-converted-space> </span><br><b>Sent:</b><span class=apple-converted-space> </span>Wednesday, August 15, 2012 11:42 AM<br><b>To:</b><span class=apple-converted-space> </span>Weiming Zhao<br><b>Cc:</b><span class=apple-converted-space> </span><a href="mailto:llvm-commits@cs.uiuc.edu">llvm-commits@cs.uiuc.edu</a><br><b>Subject:</b><span class=apple-converted-space> </span>Re: [llvm-commits] Fix Bug 13574: Add more double float shrinking optimizations</span><o:p></o:p></p></div></div></div><div><p class=MsoNormal> <o:p></o:p></p></div><div><p class=MsoNormal> <o:p></o:p></p></div><div><div><div><p class=MsoNormal>On Aug 15, 2012, at 11:33 AM, Weiming Zhao wrote:<o:p></o:p></p></div></div><div><p class=MsoNormal><br><br><br><o:p></o:p></p></div><div><div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>Hi,</span><o:p></o:p></p></div></div><div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'> </span><o:p></o:p></p></div></div><div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>This patch fixes<span class=apple-converted-space> </span><a href="http://llvm.org/bugs/show_bug.cgi?id=13574">http://llvm.org/bugs/show_bug.cgi?id=13574</a></span><o:p></o:p></p></div></div><div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'> </span><o:p></o:p></p></div></div><div><div><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:black'>Current LLVM only supports 5 double->float shrinking optimizations (floor->floorf, ceil->ceilf,round->roundf, rint->rintf() and nearbyint->nearbyintf).</span><o:p></o:p></p></div></div><div><div><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:black'> </span><o:p></o:p></p></div></div><div><div><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:black'>This patch adds more math functions, for example, pow->powf, sin->sinf, cos->cosf, etc.</span><o:p></o:p></p></div></div><div><div><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:black'> </span><o:p></o:p></p></div></div><div><div><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:black'>In this patch:</span><o:p></o:p></p></div></div><div style='margin-left:.5in'><div><p class=MsoNormal style='text-indent:-.25in'><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:black'>1.</span><span style='font-size:7.0pt;color:black'> <span class=apple-converted-space> </span></span><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:black'>Since cos(), pow() and exp2() already have their own optimizers: CosPot, PowOpt and Exp2Opt, respectively, I let them inherit from UnaryDoubleFPOpt and in their CallOptimizer(), I let them to call the base class’s CallOptimizer() first.</span><o:p></o:p></p></div></div><div><div><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:black'>For this change, I have to hoist the definition of UnaryDoubleFPOpt ahead of CosOpt.</span><o:p></o:p></p></div></div><div><div><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:black'> </span><o:p></o:p></p></div></div><div style='margin-left:.5in'><div><p class=MsoNormal style='text-indent:-.25in'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>2.</span><span style='font-size:7.0pt'> <span class=apple-converted-space> </span></span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>Since some functions are not available on Windows, I updated TargetLibraryInfo to mark them as unavailable.</span><o:p></o:p></p></div></div><div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'> </span><o:p></o:p></p></div></div><div style='margin-left:.5in'><div><p class=MsoNormal style='text-indent:-.25in'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>3.</span><span style='font-size:7.0pt'> <span class=apple-converted-space> </span></span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>A unit test case is updated to test this patch.</span><o:p></o:p></p></div></div></div><div><div><p class=MsoNormal> <o:p></o:p></p></div></div><div><div><p class=MsoNormal>At the very least you should have one test case per library function that you've added.<o:p></o:p></p></div></div><div><div><p class=MsoNormal> <o:p></o:p></p></div></div><div><div><p class=MsoNormal> Chad<o:p></o:p></p></div></div><div><p class=MsoNormal><br><br><br><o:p></o:p></p></div><div><div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'> </span><o:p></o:p></p></div></div><div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>Please help to review them.</span><o:p></o:p></p></div></div><div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'> </span><o:p></o:p></p></div></div><div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>Thanks,</span><o:p></o:p></p></div></div><div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>Weiming</span><o:p></o:p></p></div></div><div><p class=MsoNormal><span style='font-size:13.5pt;font-family:"Helvetica","sans-serif"'><0001-Bug-13574-More-double-float-shrinking-optimizations-f.patch>_______________________________________________<br>llvm-commits mailing list<br><a href="mailto:llvm-commits@cs.uiuc.edu">llvm-commits@cs.uiuc.edu</a><br><a href="http://lists.cs.uiuc.edu/mailman/listinfo/llvm-commits">http://lists.cs.uiuc.edu/mailman/listinfo/llvm-commits</a></span><o:p></o:p></p></div></div></div><div><p class=MsoNormal> <o:p></o:p></p></div></div></div><p class=MsoNormal><o:p> </o:p></p></div></div></div></body></html>