[llvm] [SPIR-V] Allow intrinsics with aggregate return type to reach GlobalISel (PR #108893)

[Eli Friedman via llvm-commits]

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@@ -590,6 +593,29 @@ bool SPIRVInstructionSelector::spvSelect(Register ResVReg,
   case TargetOpcode::G_USUBSAT:
     return selectExtInst(ResVReg, ResType, I, CL::u_sub_sat);
 
+  case TargetOpcode::G_SADDO:
+    report_fatal_error(
+        "Selection of a signed addition with overflow is not implemented",
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efriedma-quic wrote:

Instead of report_fatal_error, can you allow this to fallback to the generic expansion code?

https://github.com/llvm/llvm-project/pull/108893