diff options
| -rw-r--r-- | lib/CodeGen/SimpleRegisterCoalescing.cpp | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/lib/CodeGen/SimpleRegisterCoalescing.cpp b/lib/CodeGen/SimpleRegisterCoalescing.cpp index 1f68a6f..6b0b2d1 100644 --- a/lib/CodeGen/SimpleRegisterCoalescing.cpp +++ b/lib/CodeGen/SimpleRegisterCoalescing.cpp @@ -1255,7 +1255,12 @@ SimpleRegisterCoalescing::CanJoinExtractSubRegToPhysReg(unsigned DstReg, unsigned &RealDstReg) { const TargetRegisterClass *RC = mri_->getRegClass(SrcReg); RealDstReg = tri_->getMatchingSuperReg(DstReg, SubIdx, RC); - assert(RealDstReg && "Invalid extract_subreg instruction!"); + if (!RealDstReg) { + DEBUG(dbgs() << "\tIncompatible source regclass: " + << "none of the super-registers of " << tri_->getName(DstReg) + << " are in " << RC->getName() << ".\n"); + return false; + } LiveInterval &RHS = li_->getInterval(SrcReg); // For this type of EXTRACT_SUBREG, conservatively @@ -1293,7 +1298,12 @@ SimpleRegisterCoalescing::CanJoinInsertSubRegToPhysReg(unsigned DstReg, unsigned &RealSrcReg) { const TargetRegisterClass *RC = mri_->getRegClass(DstReg); RealSrcReg = tri_->getMatchingSuperReg(SrcReg, SubIdx, RC); - assert(RealSrcReg && "Invalid extract_subreg instruction!"); + if (!RealSrcReg) { + DEBUG(dbgs() << "\tIncompatible destination regclass: " + << "none of the super-registers of " << tri_->getName(SrcReg) + << " are in " << RC->getName() << ".\n"); + return false; + } LiveInterval &LHS = li_->getInterval(DstReg); if (li_->hasInterval(RealSrcReg) && @@ -1419,7 +1429,8 @@ bool SimpleRegisterCoalescing::JoinCopy(CopyRec &TheCopy, bool &Again) { assert(DstSubRC && "Illegal subregister index"); if (!DstSubRC->contains(SrcSubReg)) { DEBUG(dbgs() << "\tIncompatible destination regclass: " - << tri_->getName(SrcSubReg) << " not in " + << "none of the super-registers of " + << tri_->getName(SrcSubReg) << " are in " << DstSubRC->getName() << ".\n"); return false; // Not coalescable. } @@ -1436,7 +1447,8 @@ bool SimpleRegisterCoalescing::JoinCopy(CopyRec &TheCopy, bool &Again) { assert(SrcSubRC && "Illegal subregister index"); if (!SrcSubRC->contains(DstSubReg)) { DEBUG(dbgs() << "\tIncompatible source regclass: " - << tri_->getName(DstSubReg) << " not in " + << "none of the super-registers of " + << tri_->getName(DstSubReg) << " are in " << SrcSubRC->getName() << ".\n"); (void)DstSubReg; return false; // Not coalescable. |