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Fixed bug in basic gshare.

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This commit is contained in:
Ross Thompson 2023-02-22 12:54:46 -06:00
parent 6d604f7af5
commit 1af7b8051e
1 changed files with 6 additions and 6 deletions
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12
src/ifu/bpred/gsharebasic.sv
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@ -42,7 +42,7 @@ module gsharebasic #(parameter k = 10,
input logic BranchInstrE, BranchInstrM, PCSrcE
);
logic [k-1:0] IndexNextF, IndexE;
logic [k-1:0] IndexNextF, IndexM;
logic [1:0] DirPredictionD, DirPredictionE;
logic [1:0] NewDirPredictionE, NewDirPredictionM;
@ -52,19 +52,19 @@ module gsharebasic #(parameter k = 10,
if(TYPE == 1) begin
assign IndexNextF = GHR ^ {PCNextF[k+1] ^ PCNextF[1], PCNextF[k:2]};
assign IndexE = GHRM ^ {PCM[k+1] ^ PCM[1], PCM[k:2]};
assign IndexM = GHRM ^ {PCM[k+1] ^ PCM[1], PCM[k:2]};
end else if(TYPE == 0) begin
assign IndexNextF = GHRNext;
assign IndexE = GHRE;
assign IndexM = GHRM;
end
ram2p1r1wbe #(2**k, 2) PHT(.clk(clk),
.ce1(~StallF), .ce2(~StallM & ~FlushM),
.ce1(~StallF), .ce2(~StallW & ~FlushW),
.ra1(IndexNextF),
.rd1(DirPredictionF),
.wa2(IndexE),
.wa2(IndexM),
.wd2(NewDirPredictionM),
.we2(BranchInstrM & ~StallW & ~FlushW),
.we2(BranchInstrM),
.bwe2(1'b1));
flopenrc #(2) PredictionRegD(clk, reset, FlushD, ~StallD, DirPredictionF, DirPredictionD);