From: Andrew Trick <atrick@apple.com>
Date: Sat, 13 Apr 2013 06:07:45 +0000 (+0000)
Subject: MI-Sched cleanup. If an instruction has no valid sched class, do not attempt to check... 
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=be2bccbce9353abb4e3d161d07718dc28b389cd1;p=platform%2Fupstream%2Fllvm.git

MI-Sched cleanup. If an instruction has no valid sched class, do not attempt to check for a variant.

llvm-svn: 179451
---

diff --git a/llvm/lib/CodeGen/TargetSchedule.cpp b/llvm/lib/CodeGen/TargetSchedule.cpp
index 783bfa1..1bf14db 100644
--- a/llvm/lib/CodeGen/TargetSchedule.cpp
+++ b/llvm/lib/CodeGen/TargetSchedule.cpp
@@ -128,6 +128,8 @@ resolveSchedClass(const MachineInstr *MI) const {
   // Get the definition's scheduling class descriptor from this machine model.
   unsigned SchedClass = MI->getDesc().getSchedClass();
   const MCSchedClassDesc *SCDesc = SchedModel.getSchedClassDesc(SchedClass);
+  if (!SCDesc->isValid())
+    return SCDesc;
 
 #ifndef NDEBUG
   unsigned NIter = 0;