[PATCH] D45732: [GlobalISel] Making VRegs w/ LLTs and RegClasses both illegal

[Aditya Nandakumar via Phabricator via llvm-commits]

aditya_nandakumar added a comment.

Also, I wonder if there would be passes (non ISEL), that would break the invariant intra pass, but cleans up at the end of the pass..



================
Comment at: lib/CodeGen/GlobalISel/IRTranslator.cpp:598
+  MIRBuilder.buildInstr(TargetOpcode::COPY).addDef(DstReg).addUse(TmpReg);
 
   auto &TLI = *MF->getSubtarget().getTargetLowering();
----------------
This can be simplified into a more compact form (if you care enough).

```
auto MIB = MIRBuilder.buildCopy(DstReg,
                          MIRBuilder.buildInstr(TRI->getPointerRegClass(*MF), LOAD_STACK_GUARD))
```


Repository:
  rL LLVM

https://reviews.llvm.org/D45732