diff options
Diffstat (limited to 'llvm/lib/Target/SystemZ/SystemZInstrInfo.cpp')
| -rw-r--r-- | llvm/lib/Target/SystemZ/SystemZInstrInfo.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/llvm/lib/Target/SystemZ/SystemZInstrInfo.cpp b/llvm/lib/Target/SystemZ/SystemZInstrInfo.cpp index 39c43739e1c..8dadd017770 100644 --- a/llvm/lib/Target/SystemZ/SystemZInstrInfo.cpp +++ b/llvm/lib/Target/SystemZ/SystemZInstrInfo.cpp @@ -572,7 +572,8 @@ void SystemZInstrInfo::copyPhysReg(MachineBasicBlock &MBB, if (SystemZ::GR64BitRegClass.contains(DestReg, SrcReg)) Opcode = SystemZ::LGR; else if (SystemZ::FP32BitRegClass.contains(DestReg, SrcReg)) - Opcode = SystemZ::LER; + // For z13 we prefer LDR over LER to avoid partial register dependencies. + Opcode = STI.hasVector() ? SystemZ::LDR32 : SystemZ::LER; else if (SystemZ::FP64BitRegClass.contains(DestReg, SrcReg)) Opcode = SystemZ::LDR; else if (SystemZ::FP128BitRegClass.contains(DestReg, SrcReg)) |
