[RTG] Add immediate type and attribute #8314
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This adds an immediate type and attribute that support any bitwidth and will replace the immediate types and attributes in the RTGTest dialect. Also adds a constant operation that can create an SSA value for any typed attribute. I also moved the labels type to form a kind of ISA subdialect with the immediates and made that explicit in the textual IR. We can do the same for relevant ops in the future.
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youngar
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Mar 31, 2025
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This adds an immediate type and attribute that support any bitwidth and will replace the immediate types and attributes in the RTGTest dialect. They are common for all ISAs and by adding it to RTG it is not necessary to have this duplicated for all ISA payload dialects. Also adds a constant operation that can create an SSA value for any typed attribute. I also moved the labels type to form a kind of ISA subdialect with the immediates and made that explicit in the textual IR. We can do the same for relevant ops in the future.