Make the pre-split-limit option more useful by using a per-function counter.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63091 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/PreAllocSplitting.cpp b/lib/CodeGen/PreAllocSplitting.cpp
index e3d652a..2a009b0 100644
--- a/lib/CodeGen/PreAllocSplitting.cpp
+++ b/lib/CodeGen/PreAllocSplitting.cpp
@@ -38,7 +38,7 @@
static cl::opt<int> PreSplitLimit("pre-split-limit", cl::init(-1), cl::Hidden);
-STATISTIC(NumSplits, "Number of intervals split");
+STATISTIC(NumTotalSplits, "Number of intervals split");
STATISTIC(NumRemats, "Number of intervals split by rematerialization");
STATISTIC(NumFolds, "Number of intervals split with spill folding");
STATISTIC(NumRenumbers, "Number of intervals renumbered into new registers");
@@ -77,6 +77,8 @@
// Def2SpillMap - A map from a def instruction index to spill index.
DenseMap<unsigned, unsigned> Def2SpillMap;
+
+ unsigned NumSplits;
public:
static char ID;
@@ -1191,6 +1193,7 @@
LSs = &getAnalysis<LiveStacks>();
bool MadeChange = false;
+ NumSplits = 0;
// Make sure blocks are numbered in order.
MF.RenumberBlocks();
@@ -1217,6 +1220,9 @@
}
MadeChange |= removeDeadSpills(Split);
+
+ if (NumSplits)
+ NumTotalSplits += NumSplits;
return MadeChange;
}