<div dir="ltr">Is there a reason why?<br>IE is it hard to maintain, slow, or are you just worried it will break? or something else?<div><br></div><div>(I'm not opposed in any way, literally just want to understand the motivation)</div><div><br><div><br></div></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Sep 20, 2017 at 12:20 PM, Craig Topper via llvm-dev <span dir="ltr"><<a href="mailto:llvm-dev@lists.llvm.org" target="_blank">llvm-dev@lists.llvm.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div>We have quite a lot of code in AutoUpgrade.cpp to upgrade X86 intrinsics that have been replaced with native IR over the years. Has enough time and/or versions passed that we can begin phasing out some of this code?</div><div><br></div><div>As I'm writing these we don't seem to have tests for a lot of the older upgrades. We've done better at this in the last few years.</div><div><br></div><div>3.1 added upgrade for:</div><div>x86.sse2.pcmpeq.* - we have almost no test cases for this</div><div>x86.sse2.pcmpgt.* - we no test cases for this</div><div>x86.avx2.pcmpeq.* - we have no test cases</div><div>x86.avx2.pcmpgt.* - we have no test cases for this</div><div>x86.avx.vpermil.* - we do test this</div><div><br></div><div>3.2 added upgrade for:</div><div>x86.avx.movnt.* - we have tests for this</div><div>x86.xop.vpcom* - we have tests for this</div><div>x86.sse41.ptest.* had its signature chagned and we upgrade from the old signature. We don't have tests for the old signature.</div><div>x86.xop.vfrcz.ss/sd had an argument dropped that we upgrade for. We don't have any tests for the old signature.</div><div><br></div><div>3.3 had no upgrades</div><div><br></div><div>3.4 removed:</div><div>x86.sse42.crc32.64.8 we do have tests that use it</div><div><br></div><div>For the complete list of intrinsic upgrade support, there's an annotated list in ShouldUpgradeX86Intrinsic in AutoUpgrade.cpp</div><span class="HOEnZb"><font color="#888888"><br clear="all"><div><div class="m_-9141327994985433605gmail_signature">~Craig</div></div>
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