<div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote">On Wed, May 11, 2016 at 7:19 PM, Xinliang David Li via llvm-commits <span dir="ltr"><<a href="mailto:llvm-commits@lists.llvm.org" target="_blank">llvm-commits@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">Author: davidxl<br>
Date: Wed May 11 21:19:16 2016<br>
New Revision: 269267<br>
<br>
URL: <a href="http://llvm.org/viewvc/llvm-project?rev=269267&view=rev" rel="noreferrer" target="_blank">http://llvm.org/viewvc/llvm-project?rev=269267&view=rev</a><br>
Log:<br>
[Layout] Add a new test case for optimal rotation<br>
<br>
Enabled by -force-precise-rotation-cost option<br>
<br>
Added:<br>
    llvm/trunk/test/CodeGen/X86/code_placement_loop_rotation3.ll<br>
<br>
Added: llvm/trunk/test/CodeGen/X86/code_placement_loop_rotation3.ll<br>
URL: <a href="http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/code_placement_loop_rotation3.ll?rev=269267&view=auto" rel="noreferrer" target="_blank">http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/code_placement_loop_rotation3.ll?rev=269267&view=auto</a><br>
==============================================================================<br>
--- llvm/trunk/test/CodeGen/X86/code_placement_loop_rotation3.ll (added)<br>
+++ llvm/trunk/test/CodeGen/X86/code_placement_loop_rotation3.ll Wed May 11 21:19:16 2016<br>
@@ -0,0 +1,43 @@<br>
+; RUN: llc -mcpu=corei7 -mtriple=x86_64-linux -force-precise-rotation-cost < %s | FileCheck %s -check-prefix=CHECK<br>
+<br>
+define void @bar()  {<br>
+; Test that all edges in the loop chain are fall through with profile data.<br>
+;<br>
+; CHECK-LABEL: bar:<br>
+; CHECK: latch<br>
+; CHECK: header<br>
+; CHECK: if.then<br>
+; CHECK: end<br>
+<br>
+entry:<br>
+  br label %header<br>
+<br>
+header:<br>
+  call void @e()<br>
+  %call = call zeroext i1 @a()<br>
+  br i1 %call, label %if.then, label %latch, !prof !2<br>
+<br>
+if.then:<br>
+  call void @f()<br>
+  %call3 = call zeroext i1 @a()<br>
+  br i1 %call3, label %latch, label %end, !prof !3<br>
+<br>
+latch:<br>
+  call void @h()<br>
+  %call2 = call zeroext i1 @a()<br>
+  br i1 %call2, label %header, label %end, !prof !4<br>
+<br>
+end:<br>
+  ret void<br>
+}<br>
+<br>
+declare zeroext i1 @a()<br>
+declare void @e()<br>
+declare void @f()<br>
+declare void @g()<br>
+declare void @h()<br>
+<br>
+!1 = !{!"branch_weights", i32 16, i32 16}<br></blockquote><div><br></div><div>Was !1 meant to be used somewhere?</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
+!2 = !{!"branch_weights", i32 16, i32 16}<br>
+!3 = !{!"branch_weights", i32 97, i32 3}<br>
+!4 = !{!"branch_weights", i32 97, i32 3}<br>
<br>
<br>
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</blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature"><span style="font-family:Times;font-size:medium"><table cellspacing="0" cellpadding="0"><tbody><tr style="color:rgb(85,85,85);font-family:sans-serif;font-size:small"><td nowrap style="border-top-style:solid;border-top-color:rgb(213,15,37);border-top-width:2px">Teresa Johnson |</td><td nowrap style="border-top-style:solid;border-top-color:rgb(51,105,232);border-top-width:2px"> Software Engineer |</td><td nowrap style="border-top-style:solid;border-top-color:rgb(0,153,57);border-top-width:2px"> <a href="mailto:tejohnson@google.com" target="_blank">tejohnson@google.com</a> |</td><td nowrap style="border-top-style:solid;border-top-color:rgb(238,178,17);border-top-width:2px"> 408-460-2413</td></tr></tbody></table></span></div>
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