Implement RAGreedy::splitAroundRegion and remove loop splitting.
Region splitting includes loop splitting as a subset, and it is more generic.
The splitting heuristics for variables that are live in more than one block are
now:
1. Try to create a region that covers multiple basic blocks.
2. Try to create a new live range for each block with multiple uses.
3. Spill.
Steps 2 and 3 are similar to what the standard spiller is doing.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123853 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/LiveInterval.cpp b/lib/CodeGen/LiveInterval.cpp
index c6a0149..c2dbd6a 100644
--- a/lib/CodeGen/LiveInterval.cpp
+++ b/lib/CodeGen/LiveInterval.cpp
@@ -650,7 +650,9 @@
}
void LiveInterval::print(raw_ostream &OS, const TargetRegisterInfo *TRI) const {
- OS << PrintReg(reg, TRI) << ',' << weight;
+ OS << PrintReg(reg, TRI);
+ if (weight != 0)
+ OS << ',' << weight;
if (empty())
OS << " EMPTY";