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| author | Evan Cheng <evan.cheng@apple.com> | 2008-03-13 07:56:58 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2008-03-13 07:56:58 +0000 |
| commit | 0099ae2468c6c7c1e73f4df539d6e3e1ccdfafaa (patch) | |
| tree | a2610f0e419f953c8ca018ba67918fe0a54f96c2 /lib/CodeGen | |
| parent | d99464d647e188ef5cb5abb07a6136ee88b3636c (diff) | |
| download | external_llvm-0099ae2468c6c7c1e73f4df539d6e3e1ccdfafaa.zip external_llvm-0099ae2468c6c7c1e73f4df539d6e3e1ccdfafaa.tar.gz external_llvm-0099ae2468c6c7c1e73f4df539d6e3e1ccdfafaa.tar.bz2 | |
Don't try to sink 3-address instruction if convertToThreeAddress created more than one instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48336 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen')
| -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 7380327..30727a6 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; |