diff options
Diffstat (limited to 'llvm/lib/Target/SystemZ/SystemZFrameLowering.cpp')
| -rw-r--r-- | llvm/lib/Target/SystemZ/SystemZFrameLowering.cpp | 13 |
1 files changed, 0 insertions, 13 deletions
diff --git a/llvm/lib/Target/SystemZ/SystemZFrameLowering.cpp b/llvm/lib/Target/SystemZ/SystemZFrameLowering.cpp index 866e0db7c90..0bdfaf67c40 100644 --- a/llvm/lib/Target/SystemZ/SystemZFrameLowering.cpp +++ b/llvm/lib/Target/SystemZ/SystemZFrameLowering.cpp @@ -354,15 +354,6 @@ void SystemZFrameLowering::emitPrologue(MachineFunction &MF, uint64_t StackSize = getAllocatedStackSize(MF); if (StackSize) { - // Determine if we want to store a backchain. - bool StoreBackchain = MF.getFunction()->hasFnAttribute("backchain"); - - // If we need backchain, save current stack pointer. R1 is free at this - // point. - if (StoreBackchain) - BuildMI(MBB, MBBI, DL, ZII->get(SystemZ::LGR)) - .addReg(SystemZ::R1D).addReg(SystemZ::R15D); - // Allocate StackSize bytes. int64_t Delta = -int64_t(StackSize); emitIncrement(MBB, MBBI, DL, SystemZ::R15D, Delta, ZII); @@ -373,10 +364,6 @@ void SystemZFrameLowering::emitPrologue(MachineFunction &MF, BuildMI(MBB, MBBI, DL, ZII->get(TargetOpcode::CFI_INSTRUCTION)) .addCFIIndex(CFIIndex); SPOffsetFromCFA += Delta; - - if (StoreBackchain) - BuildMI(MBB, MBBI, DL, ZII->get(SystemZ::STG)) - .addReg(SystemZ::R1D).addReg(SystemZ::R15D).addImm(0).addReg(0); } if (HasFP) { |
