<div dir="ltr">Andrew, I think this broke the PPC bots. Could you please take a look?<div><br></div><div>Thanks,</div><div>  Michael</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Jul 7, 2016 at 11:55 AM, Andrew Kaylor 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: akaylor<br>
Date: Thu Jul  7 13:55:02 2016<br>
New Revision: 274786<br>
<br>
URL: <a href="http://llvm.org/viewvc/llvm-project?rev=274786&view=rev" rel="noreferrer" target="_blank">http://llvm.org/viewvc/llvm-project?rev=274786&view=rev</a><br>
Log:<br>
Include SelectionDAGISel in the opt-bisect process<br>
<br>
Differential Revision: <a href="http://reviews.llvm.org/D21143" rel="noreferrer" target="_blank">http://reviews.llvm.org/D21143</a><br>
<br>
<br>
Added:<br>
    llvm/trunk/test/Other/X86/opt-bisect-isel.ll<br>
Modified:<br>
    llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp<br>
<br>
Modified: llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp<br>
URL: <a href="http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp?rev=274786&r1=274785&r2=274786&view=diff" rel="noreferrer" target="_blank">http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp?rev=274786&r1=274785&r2=274786&view=diff</a><br>
==============================================================================<br>
--- llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp (original)<br>
+++ llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp Thu Jul  7 13:55:02 2016<br>
@@ -443,7 +443,7 @@ bool SelectionDAGISel::runOnMachineFunct<br>
   TM.resetTargetOptions(Fn);<br>
   // Reset OptLevel to None for optnone functions.<br>
   CodeGenOpt::Level NewOptLevel = OptLevel;<br>
-  if (Fn.hasFnAttribute(Attribute::OptimizeNone))<br>
+  if (OptLevel != CodeGenOpt::None && skipFunction(Fn))<br>
     NewOptLevel = CodeGenOpt::None;<br>
   OptLevelChanger OLC(*this, NewOptLevel);<br>
<br>
<br>
Added: llvm/trunk/test/Other/X86/opt-bisect-isel.ll<br>
URL: <a href="http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Other/X86/opt-bisect-isel.ll?rev=274786&view=auto" rel="noreferrer" target="_blank">http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Other/X86/opt-bisect-isel.ll?rev=274786&view=auto</a><br>
==============================================================================<br>
--- llvm/trunk/test/Other/X86/opt-bisect-isel.ll (added)<br>
+++ llvm/trunk/test/Other/X86/opt-bisect-isel.ll Thu Jul  7 13:55:02 2016<br>
@@ -0,0 +1,22 @@<br>
+; This test verifies that no optimizations are performed on the @f function<br>
+; when the -opt-bisect-limit=0 option is used.  In particular, the X86<br>
+; instruction selector will optimize the cmp instruction to a sub instruction<br>
+; if it is not run in -O0 mode.<br>
+<br>
+; RUN: llc -O3 -opt-bisect-limit=0 -o - %s | FileCheck %s<br>
+<br>
+target triple = "x86_64-unknown-linux-gnu"<br>
+<br>
+define void @f() {<br>
+entry:<br>
+  %cmp = icmp slt i32 undef, 8<br>
+  br i1 %cmp, label %middle, label %end<br>
+<br>
+middle:<br>
+  br label %end<br>
+<br>
+end:<br>
+  ret void<br>
+}<br>
+<br>
+; CHECK: cmpl $8, %eax<br>
<br>
<br>
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</blockquote></div><br></div>