Pacify gcc-4.5 which wrongly thinks that RExcess (passed as the Excess parameter)

may be used uninitialized in the callers of HighRegPressure.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109393 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp b/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp
index cb69314348bc3171cc805615e4eb6316439864fc..b31f1123dcc6de7b059c82af1d4dc75e02d0b1d0 100644 (file)
--- a/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp
+++ b/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp
@@ -1192,11 +1192,12 @@ namespace {
     }
 
     bool HighRegPressure(const SUnit *SU, unsigned &Excess) const {
+      Excess = 0;
+
       if (!TLI)
         return false;
 
       bool High = false;
-      Excess = 0;
       for (SUnit::const_pred_iterator I = SU->Preds.begin(),E = SU->Preds.end();
            I != E; ++I) {
         if (I->isCtrl())