diff options
Diffstat (limited to 'llvm/lib/Target/Hexagon')
| -rw-r--r-- | llvm/lib/Target/Hexagon/RDFCopy.cpp | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/llvm/lib/Target/Hexagon/RDFCopy.cpp b/llvm/lib/Target/Hexagon/RDFCopy.cpp index 251e175e228..c777878df30 100644 --- a/llvm/lib/Target/Hexagon/RDFCopy.cpp +++ b/llvm/lib/Target/Hexagon/RDFCopy.cpp @@ -218,7 +218,12 @@ bool CopyPropagation::run() { Op.setReg(SR.Reg); Op.setSubReg(SR.Sub); DFG.unlinkUse(UA, false); - UA.Addr->linkToDef(UA.Id, DFG.addr<DefNode*>(RDefSR_SA)); + if (RDefSR_SA != 0) { + UA.Addr->linkToDef(UA.Id, DFG.addr<DefNode*>(RDefSR_SA)); + } else { + UA.Addr->setReachingDef(0); + UA.Addr->setSibling(0); + } Changed = true; #ifndef NDEBUG |
