Represent RegUnit liveness with LiveRange instance
Previously LiveInterval has been used, but having a spill weight and
register number is unnecessary for a register unit.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192397 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/LiveRegMatrix.cpp b/lib/CodeGen/LiveRegMatrix.cpp
index 0ef069f..1d801ac 100644
--- a/lib/CodeGen/LiveRegMatrix.cpp
+++ b/lib/CodeGen/LiveRegMatrix.cpp
@@ -119,9 +119,11 @@
if (VirtReg.empty())
return false;
CoalescerPair CP(VirtReg.reg, PhysReg, *TRI);
- for (MCRegUnitIterator Units(PhysReg, TRI); Units.isValid(); ++Units)
- if (VirtReg.overlaps(LIS->getRegUnit(*Units), CP, *LIS->getSlotIndexes()))
+ for (MCRegUnitIterator Units(PhysReg, TRI); Units.isValid(); ++Units) {
+ const LiveRange &UnitRange = LIS->getRegUnit(*Units);
+ if (VirtReg.overlaps(UnitRange, CP, *LIS->getSlotIndexes()))
return true;
+ }
return false;
}