<div dir="ltr">FYI, this breaks some of our Halide tests. We're seeing timeouts (tests hanging or taking a very large amount of time to compile).<div>We're looking to obtain a reproducer, but reverting would be good in order to unblock folks.</div></div><br><div class="gmail_quote"><div dir="ltr">On Wed, Oct 24, 2018 at 10:57 AM Krzysztof Parzyszek via llvm-commits <<a href="mailto:llvm-commits@lists.llvm.org">llvm-commits@lists.llvm.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Author: kparzysz<br>
Date: Wed Oct 24 10:55:13 2018<br>
New Revision: 345169<br>
<br>
URL: <a href="http://llvm.org/viewvc/llvm-project?rev=345169&view=rev" rel="noreferrer" target="_blank">http://llvm.org/viewvc/llvm-project?rev=345169&view=rev</a><br>
Log:<br>
[Hexagon] Flip hexagon-autohvx to be true by default<br>
<br>
This will allow other generators of LLVM IR to use the auto-vectorizer<br>
without having to change that flag.<br>
<br>
Note: on its own, this patch will enable auto-vectorization on Hexagon<br>
in all cases, regardless of the -fvectorize flag. There is a companion<br>
clang patch that together with this one forms an NFC for clang users.<br>
<br>
Modified:<br>
    llvm/trunk/lib/Target/Hexagon/HexagonTargetTransformInfo.cpp<br>
<br>
Modified: llvm/trunk/lib/Target/Hexagon/HexagonTargetTransformInfo.cpp<br>
URL: <a href="http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/Hexagon/HexagonTargetTransformInfo.cpp?rev=345169&r1=345168&r2=345169&view=diff" rel="noreferrer" target="_blank">http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/Hexagon/HexagonTargetTransformInfo.cpp?rev=345169&r1=345168&r2=345169&view=diff</a><br>
==============================================================================<br>
--- llvm/trunk/lib/Target/Hexagon/HexagonTargetTransformInfo.cpp (original)<br>
+++ llvm/trunk/lib/Target/Hexagon/HexagonTargetTransformInfo.cpp Wed Oct 24 10:55:13 2018<br>
@@ -28,7 +28,7 @@ using namespace llvm;<br>
<br>
 #define DEBUG_TYPE "hexagontti"<br>
<br>
-static cl::opt<bool> HexagonAutoHVX("hexagon-autohvx", cl::init(false),<br>
+static cl::opt<bool> HexagonAutoHVX("hexagon-autohvx", cl::init(true),<br>
   cl::Hidden, cl::desc("Enable loop vectorizer for HVX"));<br>
<br>
 static cl::opt<bool> EmitLookupTables("hexagon-emit-lookup-tables",<br>
<br>
<br>
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</blockquote></div>