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Added support for branch counters when there is no branch predictor.

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Rose Thompson 2023-10-23 15:32:03 -05:00
parent 2b031ea445
commit bce15ce367
1 changed files with 14 additions and 1 deletions
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15
src/ifu/ifu.sv
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@ -340,8 +340,21 @@ module ifu import cvw::*; #(parameter cvw_t P) (
end else begin : bpred
mux2 #(P.XLEN) pcmux1(.d0(PCPlus2or4F), .d1(IEUAdrE), .s(PCSrcE), .y(PC1NextF));
logic BranchM, JumpM, BranchW, JumpW;
logic CallD, CallE, CallM, CallW;
logic ReturnD, ReturnE, ReturnM, ReturnW;
assign BPWrongE = PCSrcE;
assign {InstrClassM, BPDirPredWrongM, BTAWrongM, RASPredPCWrongM, IClassWrongM} = '0;
icpred #(P, 0) icpred(.clk, .reset, .StallF, .StallD, .StallE, .StallM, .StallW, .FlushD, .FlushE, .FlushM, .FlushW,
.PostSpillInstrRawF, .InstrD, .BranchD, .BranchE, .JumpD, .JumpE, .BranchM, .BranchW, .JumpM, .JumpW,
.CallD, .CallE, .CallM, .CallW, .ReturnD, .ReturnE, .ReturnM, .ReturnW,
.BTBCallF(1'b0), .BTBReturnF(1'b0), .BTBJumpF(1'b0),
.BTBBranchF(1'b0), .BPCallF(), .BPReturnF(), .BPJumpF(), .BPBranchF(), .IClassWrongM,
.IClassWrongE(), .BPReturnWrongD());
flopenrc #(1) PCSrcMReg(clk, reset, FlushM, ~StallM, PCSrcE, BPWrongM);
assign RASPredPCWrongM = '0;
assign BPDirPredWrongM = BPWrongM;
assign BTAWrongM = BPWrongM;
assign InstrClassM = {CallM, ReturnM, JumpM, BranchM};
assign NextValidPCE = PCE;
end