[llvm] [SPIR-V] Emit NoCapture function parameter decoration for captures(none) args (PR #223694)

[Dmitry Sidorov via llvm-commits]

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@@ -309,6 +309,12 @@ bool SPIRVCallLowering::lowerFormalArguments(MachineIRBuilder &MIRBuilder,
           buildOpDecorate(VRegs[i][0], MIRBuilder,
                           SPIRV::Decoration::FuncParamAttr, {Attr});
         }
+        if (Arg.hasNoCaptureAttr()) {
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MrSidims wrote:

It should be restricted to kernel-only, see: https://registry.khronos.org/SPIR-V/specs/unified1/SPIRV.html#Function_Parameter_Attribute

https://github.com/llvm/llvm-project/pull/223694