diff options
| -rw-r--r-- | lib/CodeGen/RegisterCoalescer.cpp | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/lib/CodeGen/RegisterCoalescer.cpp b/lib/CodeGen/RegisterCoalescer.cpp index f529f1899c..149b6b751f 100644 --- a/lib/CodeGen/RegisterCoalescer.cpp +++ b/lib/CodeGen/RegisterCoalescer.cpp @@ -1310,9 +1310,10 @@ bool RegisterCoalescer::joinIntervals(CoalescerPair &CP) { // DstReg is known to be a register in the LHS interval. If the src is // from the RHS interval, we can use its value #. - if (!CP.isCoalescable(MI) && - !RegistersDefinedFromSameValue(*LIS, *TRI, CP, VNI, OtherVNI, - DupCopies)) + if (CP.isCoalescable(MI)) + DeadCopies.push_back(MI); + else if (!RegistersDefinedFromSameValue(*LIS, *TRI, CP, VNI, OtherVNI, + DupCopies)) continue; LHSValsDefinedFromRHS[VNI] = OtherVNI; @@ -1339,13 +1340,13 @@ bool RegisterCoalescer::joinIntervals(CoalescerPair &CP) { // DstReg is known to be a register in the RHS interval. If the src is // from the LHS interval, we can use its value #. - if (!CP.isCoalescable(MI) && - !RegistersDefinedFromSameValue(*LIS, *TRI, CP, VNI, OtherVNI, - DupCopies)) + if (CP.isCoalescable(MI)) + DeadCopies.push_back(MI); + else if (!RegistersDefinedFromSameValue(*LIS, *TRI, CP, VNI, OtherVNI, + DupCopies)) continue; RHSValsDefinedFromLHS[VNI] = OtherVNI; - DeadCopies.push_back(MI); } LHSValNoAssignments.resize(LHS.getNumValNums(), -1); |