diff options
Diffstat (limited to 'lib/CodeGen/TwoAddressInstructionPass.cpp')
| -rw-r--r-- | lib/CodeGen/TwoAddressInstructionPass.cpp | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/lib/CodeGen/TwoAddressInstructionPass.cpp b/lib/CodeGen/TwoAddressInstructionPass.cpp index 7380327911..30727a6b7d 100644 --- a/lib/CodeGen/TwoAddressInstructionPass.cpp +++ b/lib/CodeGen/TwoAddressInstructionPass.cpp @@ -291,7 +291,12 @@ bool TwoAddressInstructionPass::runOnMachineFunction(MachineFunction &MF) { if (MachineInstr *New=TII->convertToThreeAddress(mbbi, mi, *LV)) { DOUT << "2addr: CONVERTING 2-ADDR: " << *mi; DOUT << "2addr: TO 3-ADDR: " << *New; - bool Sunk = Sink3AddrInstruction(mbbi, New, regB, mi); + bool Sunk = false; + if (New->findRegisterUseOperand(regB, New, TRI)) + // FIXME: Temporary workaround. If the new instruction doesn't + // uses regB, convertToThreeAddress must have created more + // then one instruction. + Sunk = Sink3AddrInstruction(mbbi, New, regB, mi); mbbi->erase(mi); // Nuke the old inst. if (!Sunk) mi = New; ++NumConvertedTo3Addr; |