Add some statistics to the splitting and spilling frameworks.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130931 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SplitKit.cpp b/lib/CodeGen/SplitKit.cpp
index feb3d34..739ba36 100644
--- a/lib/CodeGen/SplitKit.cpp
+++ b/lib/CodeGen/SplitKit.cpp
@@ -30,6 +30,8 @@
STATISTIC(NumFinished, "Number of splits finished");
STATISTIC(NumSimple, "Number of splits that were simple");
+STATISTIC(NumCopies, "Number of copies inserted for splitting");
+STATISTIC(NumRemats, "Number of rematerialized defs for splitting");
//===----------------------------------------------------------------------===//
// Split Analysis
@@ -589,12 +591,14 @@
LiveRangeEdit::Remat RM(ParentVNI);
if (Edit->canRematerializeAt(RM, UseIdx, true, LIS)) {
Def = Edit->rematerializeAt(MBB, I, LI->reg, RM, LIS, TII, TRI, Late);
+ ++NumRemats;
} else {
// Can't remat, just insert a copy from parent.
CopyMI = BuildMI(MBB, I, DebugLoc(), TII.get(TargetOpcode::COPY), LI->reg)
.addReg(Edit->getReg());
Def = LIS.getSlotIndexes()->insertMachineInstrInMaps(CopyMI, Late)
.getDefIndex();
+ ++NumCopies;
}
// Define the value in Reg.