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Codegen is incorrect for single argument hwintrinsics that have an implicit immediate value. #13163

@tannergooding

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@tannergooding

HWIntrinsics like Sse41.RoundToNearestIntegerScalar which are of category SIMDScalar and which have an implicit immediate value are not currently being emitted correctly.

Due to an ordering issue in the statements, they are emitted as SIMD_R_R_R rather than as R_RM_I.

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    area-CodeGen-coreclrCLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI

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