commit 3cfecf5cc2279cbbcdd497f2898161e40e690c86
author Pete Cooper <peter_cooper@apple.com> Thu Dec 22 02:13:25 2011 +0000
committer Pete Cooper <peter_cooper@apple.com> Thu Dec 22 02:13:25 2011 +0000
tree f7d93e8d5e1ca508b891382c322610860433bc71
parent dcc557f1463107d0f2f6b0099c99593b8fce4e36

Hoisted some loop invariant smallvector lookups out of a MachineLICM loop

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147127 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/MachineLICM.cpp

diff --git a/lib/CodeGen/MachineLICM.cpp b/lib/CodeGen/MachineLICM.cpp
index 3a82700..6854838 100644
--- a/lib/CodeGen/MachineLICM.cpp
+++ b/lib/CodeGen/MachineLICM.cpp
@@ -1036,9 +1036,11 @@
       continue;
 
     unsigned RCId = CI->first;
+    unsigned Limit = RegLimit[RCId];
+    int Cost = CI->second;
     for (unsigned i = BackTrace.size(); i != 0; --i) {
       SmallVector<unsigned, 8> &RP = BackTrace[i-1];
-      if (RP[RCId] + CI->second >= RegLimit[RCId])
+      if (RP[RCId] + Cost >= Limit)
         return true;
     }
   }