diff options
Diffstat (limited to 'lib/CodeGen/RegAllocLinearScan.cpp')
| -rw-r--r-- | lib/CodeGen/RegAllocLinearScan.cpp | 32 |
1 files changed, 26 insertions, 6 deletions
diff --git a/lib/CodeGen/RegAllocLinearScan.cpp b/lib/CodeGen/RegAllocLinearScan.cpp index 91d8533ae8..6a8dd6572e 100644 --- a/lib/CodeGen/RegAllocLinearScan.cpp +++ b/lib/CodeGen/RegAllocLinearScan.cpp @@ -203,6 +203,23 @@ bool RA::runOnMachineFunction(MachineFunction &fn) { v2pMap_.clear(); v2ssMap_.clear(); + DEBUG( + for (MachineBasicBlockPtrs::iterator + mbbi = mbbs_.begin(), mbbe = mbbs_.end(); + mbbi != mbbe; ++mbbi) { + MachineBasicBlock* mbb = *mbbi; + std::cerr << mbb->getBasicBlock()->getName() << '\n'; + for (MachineBasicBlock::iterator + ii = mbb->begin(), ie = mbb->end(); + ii != ie; ++ii) { + MachineInstr* instr = *ii; + + std::cerr << "\t"; + instr->print(std::cerr, *tm_); + } + } + ); + // FIXME: this will work only for the X86 backend. I need to // device an algorthm to select the minimal (considering register // aliasing) number of temp registers to reserve so that we have 2 @@ -276,12 +293,6 @@ bool RA::runOnMachineFunction(MachineFunction &fn) { DEBUG(std::cerr << "\tinstruction: "; (*currentInstr_)->print(std::cerr, *tm_);); - DEBUG(std::cerr << "\t\tspilling temporarily defined operands " - "of previous instruction:\n"); - for (unsigned i = 0, e = tempDefOperands_.size(); i != e; ++i) { - spillVirtReg(tempDefOperands_[i]); - } - tempDefOperands_.clear(); // use our current mapping and actually replace and // virtual register with its allocated physical registers @@ -422,6 +433,15 @@ bool RA::runOnMachineFunction(MachineFunction &fn) { (*currentInstr_)->SetMachineOperandReg(1, regA); } } + + DEBUG(std::cerr << "\t\tspilling temporarily defined operands " + "of this instruction:\n"); + ++currentInstr_; // we want to insert after this instruction + for (unsigned i = 0, e = tempDefOperands_.size(); i != e; ++i) { + spillVirtReg(tempDefOperands_[i]); + } + --currentInstr_; // restore currentInstr_ iterator + tempDefOperands_.clear(); } for (unsigned i = 0, e = p2vMap_.size(); i != e; ++i) { |