| commit | cf3db83e0b2033ef09d742c8a5f91549393edeb1 | [log] [tgz] |
|---|---|---|
| author | Rupert Swarbrick <rswarbrick@lowrisc.org> | Mon Aug 02 11:08:35 2021 +0100 |
| committer | Rupert Swarbrick <rswarbrick@gmail.com> | Fri Aug 06 09:24:52 2021 +0100 |
| tree | eb08ce439f8f220031148f8a3a5c327d27d1662c | |
| parent | 641d346522d12a38d61480b66c3d948c6ae0aed6 [diff] |
[otbn,dv] Add a generator to RIG to blow the loop stack
This is currently pretty simple-minded: you end up with an instruction
trace like this:
00000a3c | loopi 943, 1236
00000a40 | loopi 643, 2841
00000a44 | loop x24, 757
00000a48 | loopi 126, 518
00000a4c | loopi 813, 1999
00000a50 | loopi 900, 2354
00000a54 | jal x29, .+668
00000cf0 | loop x8, 484
00000cf4 | loop x29, 3281
00000cf8 | loop x8, 2773
There's a TODO note to add some more straight line instructions if we
decide we want something that looks less synthetic. Note the JAL
instruction in the middle of that trace: we emit jumps if we're
running out of space.
Signed-off-by: Rupert Swarbrick <rswarbrick@lowrisc.org>
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