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caravel-mpw7-20221125
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litedram-update
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3 Commits (58b348deaec16737e793834d448ac6564a494322)

Author SHA1 Message Date
Anton Blanchard bb65d0b899 Remove issue restrictions on a number of instructions 
Anything that isn't a load or store and anything that doesn't read the
CR can go as soon as its inputs are ready.

While we could also allow SPR read/write and carry read/write, we plan
to change them to be read in decode2 and written in writeback soon and
they will need separate hazard detection to be added.

Signed-off-by: Anton Blanchard <anton@linux.ibm.com>
 5 years ago
Anton Blanchard bdc26b7527 Add GPR hazard detection 
Check GPRs against any writers in the pipeline.

All instructions are still marked single in pipeline at
this stage.

Signed-off-by: Anton Blanchard <anton@linux.ibm.com>
 5 years ago
Anton Blanchard d5346d0abf Separate issue control into its own unit 
Signed-off-by: Anton Blanchard <anton@linux.ibm.com>
 5 years ago