[llvm] [SPIRV] Handle `inttoptr` constant expressions in global initialisers (PR #166494)

[Nathan Gauër via llvm-commits]

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@@ -348,6 +348,15 @@ static SPIRVType *propagateSPIRVType(MachineInstr *MI, SPIRVGlobalRegistry *GR,
         SpvType = GR->getOrCreateSPIRVIntegerType(
             MRI.getType(Reg).getScalarSizeInBits(), MIB);
         break;
+      case TargetOpcode::G_INTTOPTR:
+        // With opaque pointers it doesn't appear as if we can convert to
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Keenuts wrote:

handling of `asssign.ptr.type` is done after? Or shall those be used to determine the pointer type of this cast?

https://github.com/llvm/llvm-project/pull/166494