Fix a bug where debug info affected stack slot coloring.

Seen in SingleSrc/Benchmarks/Misc/flops with TEST=optllcdbg.
7929951.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102819 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/StackSlotColoring.cpp b/lib/CodeGen/StackSlotColoring.cpp
index 12d38f0a76d0f5d6c6fab016047688301eeff2a5..42dfd7fbcb08c1be255700bbeaed772c321e00f4 100644 (file)
--- a/lib/CodeGen/StackSlotColoring.cpp
+++ b/lib/CodeGen/StackSlotColoring.cpp
@@ -182,7 +182,8 @@ void StackSlotColoring::ScanForSpillSlotRefs(MachineFunction &MF) {
         if (!LS->hasInterval(FI))
           continue;
         LiveInterval &li = LS->getInterval(FI);
-        li.weight += LiveIntervals::getSpillWeight(false, true, loopDepth);
+        if (!MI->isDebugValue())
+          li.weight += LiveIntervals::getSpillWeight(false, true, loopDepth);
         SSRefs[FI].push_back(MI);
       }
     }