[llvm] [SPIR-V] Fix sub-byte argument type mismatch in call lowering (PR #189893)

[Arseniy Obolenskiy via llvm-commits]

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@@ -395,7 +395,6 @@ bool SPIRVCallLowering::lowerFormalArguments(MachineIRBuilder &MIRBuilder,
     assert(VRegs[i].size() == 1 && "Formal arg has multiple vregs");
     Register ArgReg = VRegs[i][0];
     MRI->setRegClass(ArgReg, GR->getRegClass(ArgTypeVRegs[i]));
-    MRI->setType(ArgReg, GR->getRegType(ArgTypeVRegs[i]));
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aobolensk wrote:

> We also have this explicit setType on line 567, could it sparkle a similar issue?

I also noticed that setType when investigating the issue, but I'm not sure about that, to be honest, I didn't test

https://github.com/llvm/llvm-project/pull/189893