Handle register masks in branch folding.
Don't attempt to move instructions with regmask operands. They are most likely calls anyway. llvm-svn: 150634
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@ -1477,6 +1477,9 @@ MachineBasicBlock::iterator findHoistingInsertPosAndDeps(MachineBasicBlock *MBB,
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bool IsDef = false;
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for (unsigned i = 0, e = PI->getNumOperands(); !IsDef && i != e; ++i) {
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const MachineOperand &MO = PI->getOperand(i);
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// If PI has a regmask operand, it is probably a call. Separate away.
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if (MO.isRegMask())
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return Loc;
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if (!MO.isReg() || MO.isUse())
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continue;
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unsigned Reg = MO.getReg();
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@ -1589,6 +1592,11 @@ bool BranchFolder::HoistCommonCodeInSuccs(MachineBasicBlock *MBB) {
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bool IsSafe = true;
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for (unsigned i = 0, e = TIB->getNumOperands(); i != e; ++i) {
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MachineOperand &MO = TIB->getOperand(i);
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// Don't attempt to hoist instructions with register masks.
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if (MO.isRegMask()) {
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IsSafe = false;
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break;
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}
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if (!MO.isReg())
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continue;
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unsigned Reg = MO.getReg();
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