koooo142857
33f5de0f5c
aligned all files in ifu folder
2021-10-27 12:43:55 -07:00
Ross Thompson
8a51fe76c1
Partial cleanup of unused signals in caches and bpred.
2021-10-24 15:04:20 -05:00
Ross Thompson
9172e52286
Corrected a number of bugs in the branch predictor.
...
Added performance counters to individually track
branches; jumps, jump register, jal, and jalr; return.
jump and jump register are special cases of jal and jalr.
Similarlly return is a special case of jalr.
Also added counters to track if the branch direction was wrong,
btb target wrong, or the ras target was wrong.
Finally added one more counter to track if the BP incorrectly predicts
a non-cfi instruction.
2021-03-31 11:54:02 -05:00
Ross Thompson
2a308309e4
fixed some bugs with the RAS.
2021-03-30 13:57:40 -05:00
Ross Thompson
84ad1353e4
Fixed a bunch of bugs with the RAS.
2021-03-23 21:49:16 -05:00
Ross Thompson
4fb7a1e0a6
Fixed the valid bit issue. Now the branch predictor is actually predicting instructions.
2021-03-23 20:20:23 -05:00
Ross Thompson
49348d734b
fixed issue with BTB's valid bit not updating. There is still a problem is valid not ocurring in the correct clock cycle.
2021-03-23 20:06:45 -05:00
Ross Thompson
95dbc5f1fa
fixed a whole bunch of bugs with the branch predictor. Still an issue with how PCNextF is not updated because the CPU is stalled.
2021-03-23 16:53:48 -05:00
Ross Thompson
301166d062
Oups. I forgot to update other do files with the commands to preload the branch predictor memories.
2021-03-05 15:23:53 -06:00
Ross Thompson
4d14c714a7
Fixed forwarding around the 2 bit predictor.
2021-03-04 13:01:41 -06:00
Ross Thompson
52d95d415f
Converted to using the BTB to predict the instruction class.
2021-03-04 09:23:35 -06:00
Ross Thompson
c6ebe7733b
Hacked the sram memory models to reset their internal registers. This allows the simulation to run but is only temporary.
...
About 149307ns of simulation run.
2021-02-18 21:32:15 -06:00
Ross Thompson
5df7e959f3
Integrated the branch predictor into the hardward. Not yet working.
2021-02-17 22:19:17 -06:00
Ross Thompson
78db3654c6
We now have a solid rough draft of the 2 bit sat counter branch predictor with BTB and RAS.
...
This is not yet tested but the system verilog does compile.
2021-02-15 14:51:39 -06:00
