Oops, didn't mean to commit that.
Spills should be hoisted out of loops, but we don't want to hoist them
to dominating blocks at the same loop depth. That could cause the spills
to be executed more often.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134782 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/InlineSpiller.cpp b/lib/CodeGen/InlineSpiller.cpp
index 44e87ae..5547f73 100644
--- a/lib/CodeGen/InlineSpiller.cpp
+++ b/lib/CodeGen/InlineSpiller.cpp
@@ -344,7 +344,7 @@
// This is a valid spill location dominating UseVNI.
// Prefer to spill at a smaller loop depth.
unsigned Depth = Loops.getLoopDepth(MBB);
- if (Depth <= SpillDepth) {
+ if (Depth < SpillDepth) {
DEBUG(dbgs() << " spill depth " << Depth << ": " << PrintReg(Reg)
<< ':' << VNI->id << '@' << VNI->def << '\n');
SVI.SpillReg = Reg;