[SPIR-V] Cannot store to OpTypeImage, OpTypeSampler, OpTypeSampledImage, or OpTypeAccelerationStructureKHR objects

Description

Fatal error during compilation (during validation if I'm not mistaken):

fatal error: generated SPIR-V is invalid: [VUID-StandaloneSpirv-OpTypeImage-06924] Cannot store to OpTypeImage, OpTypeSampler, OpTypeSampledImage, or OpTypeAccelerationStructureKHR objects
OpStore %21 %27

Steps to Reproduce
Sample code here: https://godbolt.org/z/TETvedGW7

RWBuffer<uint> ShaderPrint_RWEntryBuffer;

struct FShaderPrintBuffers
{
	RWBuffer<uint> RWEntryBuffer;
};

void ShaderPrintValue_Internal(FShaderPrintBuffers Ctx)
{
    int IndexToStore = 0;
    // Replacing the struct member with the global fixes the issue
    InterlockedAdd( Ctx.RWEntryBuffer[2] , 1 , IndexToStore );
    //InterlockedAdd( ShaderPrint_RWEntryBuffer[2], 1 , IndexToStore );
}

void Print(inout FShaderPrintBuffers Ctx)
{
    // Commenting this unroll fixes the issue
    [unroll]
    for (uint CompIt=0;CompIt< 2 ;++CompIt)
    {
        ShaderPrintValue_Internal(Ctx); 
    } 
}

[numthreads(8, 8, 1)]
void MainCS(uint3 DispatchThreadId : SV_DispatchThreadID)
{
	if (all(DispatchThreadId == 0))
	{
    	FShaderPrintBuffers Buffers;
	    Buffers.RWEntryBuffer = ShaderPrint_RWEntryBuffer;
		Print(Buffers);
	}
}

DXC command line: -E MainCS -T cs_6_6 -spirv -Qunused-arguments -HV 2021 -Wno-unknown-attributes -fvk-use-scalar-layout -fspv-svposition-implicit-invariant -fspv-target-env=vulkan1.3

Removing the unroll or using the global directly in the atomic resolves the issue. See comments in code.

Environment

• DXC version 1.9.2602

Start by reproducing the Godbolt sample with the listed DXC command line and compare the generated SPIR-V for the struct-member atomic with and without [unroll]. Trace the SPIR-V lowering involved in that case; done means the generated module no longer stores to OpTypeImage, OpTypeSampler, OpTypeSampledImage, or OpTypeAccelerationStructureKHR objects while preserving the working cases.