From 533934e06e99a86e8c93f8ec9b9d3b2c527b747e Mon Sep 17 00:00:00 2001 From: Jim Grosbach Date: Tue, 1 Jun 2010 23:48:44 +0000 Subject: Update debug information when breaking anti-dependencies. rdar://7759363 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105300 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/CodeGen/AggressiveAntiDepBreaker.cpp | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'lib/CodeGen/AggressiveAntiDepBreaker.cpp') diff --git a/lib/CodeGen/AggressiveAntiDepBreaker.cpp b/lib/CodeGen/AggressiveAntiDepBreaker.cpp index 4008a6a63c..84b226b3d0 100644 --- a/lib/CodeGen/AggressiveAntiDepBreaker.cpp +++ b/lib/CodeGen/AggressiveAntiDepBreaker.cpp @@ -905,6 +905,18 @@ unsigned AggressiveAntiDepBreaker::BreakAntiDependencies( AggressiveAntiDepState::RegisterReference>::iterator Q = Range.first, QE = Range.second; Q != QE; ++Q) { Q->second.Operand->setReg(NewReg); + // If the SU for the instruction being updated has debug + // information related to the anti-dependency register, make + // sure to update that as well. + const SUnit *SU = MISUnitMap[Q->second.Operand->getParent()]; + for (unsigned i = 0, e = SU->DbgInstrList.size() ; i < e ; ++i) { + MachineInstr *DI = SU->DbgInstrList[i]; + assert (DI->getNumOperands()==3 && DI->getOperand(0).isReg() && + DI->getOperand(0).getReg() + && "Non register dbg_value attached to SUnit!"); + if (DI->getOperand(0).getReg() == AntiDepReg) + DI->getOperand(0).setReg(NewReg); + } } // We just went back in time and modified history; the -- cgit v1.2.3