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| author | Markus Lavin <markus.lavin@ericsson.com> | 2021-11-11 15:27:15 +0100 |
|---|---|---|
| committer | Markus Lavin <markus.lavin@ericsson.com> | 2021-11-12 08:01:13 +0100 |
| commit | 4e94e25c9024d01451e318fe48aee79b615e9c2b (patch) | |
| tree | 0074b175d501b750a8e8141914a88f1bd6740d55 /llvm/lib/CodeGen/MachineSink.cpp | |
| parent | c265170110b2e3b82ab8fca6658bfbbce79381c5 (diff) | |
| download | llvm-4e94e25c9024d01451e318fe48aee79b615e9c2b.zip llvm-4e94e25c9024d01451e318fe48aee79b615e9c2b.tar.gz llvm-4e94e25c9024d01451e318fe48aee79b615e9c2b.tar.bz2 | |
Fix minor deficiency in machine-sink.
Register uses that are MRI->isConstantPhysReg() should not inhibit
sinking transformation.
Reviewed By: StephenTozer
Differential Revision: https://reviews.llvm.org/D111531
Diffstat (limited to 'llvm/lib/CodeGen/MachineSink.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/MachineSink.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/MachineSink.cpp b/llvm/lib/CodeGen/MachineSink.cpp index 4ea8bb4..30745c7 100644 --- a/llvm/lib/CodeGen/MachineSink.cpp +++ b/llvm/lib/CodeGen/MachineSink.cpp @@ -1324,7 +1324,8 @@ bool MachineSinking::SinkInstruction(MachineInstr &MI, bool &SawStore, // "zombie" define of that preg. E.g., EFLAGS. (<rdar://problem/8030636>) for (unsigned I = 0, E = MI.getNumOperands(); I != E; ++I) { const MachineOperand &MO = MI.getOperand(I); - if (!MO.isReg()) continue; + if (!MO.isReg() || MO.isUse()) + continue; Register Reg = MO.getReg(); if (Reg == 0 || !Register::isPhysicalRegister(Reg)) continue; |