Cheri-research/Toooba
1
0
Fork 0
Code Issues 1 Pull Requests Actions Packages Projects Releases Wiki Activity

Fix performance bug in PC compression where we execute across a page

Browse Source 
boundary.
This commit is contained in:
jon
2021-03-04 14:40:57 +00:00
parent 0e1e2249a6
commit 6ea387f744
1 changed files with 4 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
src_Core/RISCY_OOO/procs/RV64G_OOO/FetchStage.bsv
View File

@@ -236,7 +236,10 @@ function InstrFromFetch3 fetch3_2_instC(Fetch3ToDecode in, Instruction inst, Bit
`ifdef RVFI_DII
dii_pid: in.dii_pid,
`endif
ppc: fromMaybe(PcCompressed{lsb: in.pc.lsb + 2, idx: in.pc.idx}, in.ppc), // This assumes we will call this function on the last fragment of any instruction.
// This assumes we will call this function on the last fragment of any instruction.
ppc: fromMaybe(PcCompressed{lsb: in.pc.lsb + 2,
idx: in.pc.idx + ((in.pc.lsb == -2) ? 1:0)}, // If we move to a new page, we will move to the next index in the compressed PC table.
in.ppc),
decode_epoch: in.decode_epoch,
main_epoch: in.main_epoch,
inst: inst,