[LLHD] Add llhd.delay operation
#7505
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Add an operation that delays the propagation of value changes from its input to its output. This allows mem2reg of LLHD signals with a unique driver with a delay. For example ``` %sig = llhd.sig llhd.drv %sig, %val after <1ns, 0d, 0e> %res = llhd.prb %sig ``` can become ``` %res = llhd.delay %val by <1ns, 0d, 0e> ```
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Add an operation that delays the propagation of value changes from its input to its output. This allows mem2reg of LLHD signals with a unique driver with a delay. For example
can become