z b3397bacfb [CodeGen][LLVM] Fix MachineOperand::print crash when TII is nullptr. (#135170) ...

This crash will caused if run this testcase:
  llvm/test/CodeGen/AMDGPU/llvm.amdgcn.ds.gws.barrier-fastregalloc.ll

When build the SDNode, precisely build the SDNode for this ir:
```ir
  call void @llvm.amdgcn.ds.gws.barrier(i32 %val, i32 0)
```
If want call the dump function of the new SDNode in the gdb environment
like this:
```gdb
  p N->dump()
```
The llvm will crash.

All of these is because calling ```dump()``` will cause the
calling```MachineMemOperand::print()```
with the argument value for the```TII``` is nullptr. 
And the llvm/lib/CodeGen/MachineOperand.cpp#L1235 is a derefrence of
TII.

Signed-off-by: fanfuqiang <fuqiang.fan@mthreads.com>

2025-04-11 15:26:55 +08:00

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