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Added speculative gshare.

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This commit is contained in:
Ross Thompson 2023-01-05 14:18:00 -06:00
parent 9d03109f34
commit 2224679694
2 changed files with 9 additions and 3 deletions
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2
pipelined/config/rv64gc/wally-config.vh
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@ -140,7 +140,7 @@
`define PLIC_UART_ID 10
`define BPRED_ENABLED 1
`define BPTYPE "BPSPECULATIVEGLOBAL" // BPLOCALPAg or BPGLOBAL or BPTWOBIT or BPGSHARE BPSPECULATIVEGLOBAL
`define BPTYPE "BPSPECULATIVEGSHARE" // BPLOCALPAg or BPGLOBAL or BPTWOBIT or BPGSHARE or BPSPECULATIVEGLOBAL or BPSPECULATIVEGSHARE
`define TESTSBP 0
`define BPRED_SIZE 10

10
pipelined/src/ifu/bpred.sv
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@ -106,8 +106,14 @@ module bpred (
gshare DirPredictor(.clk, .reset, .StallF, .StallD, .StallE, .StallM, .FlushD, .FlushE, .FlushM,
.PCNextF, .PCM, .DirPredictionF, .DirPredictionWrongE,
.BranchInstrE(InstrClassE[0]), .BranchInstrM(InstrClassM[0]), .PCSrcE);
end
else if (`BPTYPE == "BPLOCALPAg") begin:Predictor
end else if (`BPTYPE == "BPSPECULATIVEGSHARE") begin:Predictor
speculativegshare DirPredictor(.clk, .reset, .StallF, .StallD, .StallE, .StallM, .StallW, .FlushD, .FlushE, .FlushM, .FlushW,
.PCNextF, .PCF, .PCD, .PCE, .PCM, .DirPredictionF, .DirPredictionWrongE,
.BranchInstrF(BPInstrClassF[0]), .BranchInstrD(BPInstrClassD[0]), .BranchInstrE(InstrClassE[0]), .BranchInstrM(InstrClassM[0]),
.BranchInstrW(InstrClassW[0]), .PCSrcE);
end else if (`BPTYPE == "BPLOCALPAg") begin:Predictor
// *** Fix me
/* -----\/----- EXCLUDED -----\/-----
localHistoryPredictor DirPredictor(.clk,