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removed duplicate quotient mux

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David Harris 2022-12-30 07:17:38 -08:00
parent 61230c967c
commit 30dc45c764
1 changed files with 3 additions and 5 deletions
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8
pipelined/src/fpu/fdivsqrt/fdivsqrtpostproc.sv
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@ -102,14 +102,12 @@ module fdivsqrtpostproc(
if (`IDIV_ON_FPU) begin if (`IDIV_ON_FPU) begin
logic [`DIVBLEN:0] NormShiftM; logic [`DIVBLEN:0] NormShiftM;
logic [`DIVb:0] NormQuotM;
logic [`DIVb+3:0] IntQuotM, IntRemM, NormRemM, NormRemDM; logic [`DIVb+3:0] IntQuotM, IntRemM, NormRemM, NormRemDM;
assign W = $signed(Sum) >>> `LOGR; assign W = $signed(Sum) >>> `LOGR;
assign DM = {4'b0001, D}; assign DM = {4'b0001, D};
// Integer division: sign handling for div and rem // Integer remainder: sticky and sign correction muxes
mux2 #(`DIVb+1) normquotmux(FirstU, FirstUM, NegStickyM, NormQuotM);
mux2 #(`DIVb+4) normremdmux(W, W+DM, NegStickyM, NormRemDM); mux2 #(`DIVb+4) normremdmux(W, W+DM, NegStickyM, NormRemDM);
mux2 #(`DIVb+4) normremsmux(NormRemDM, -NormRemDM, AsM, NormRemM); mux2 #(`DIVb+4) normremsmux(NormRemDM, -NormRemDM, AsM, NormRemM);
@ -129,7 +127,7 @@ module fdivsqrtpostproc(
IntRemM = '0; IntRemM = '0;
end end
end else begin end else begin
PreIntQuotM = {3'b000, NormQuotM}; PreIntQuotM = {3'b000, PreQmM};
IntRemM = NormRemM; IntRemM = NormRemM;
end end
// flip sign if necessary // flip sign if necessary
@ -147,7 +145,7 @@ module fdivsqrtpostproc(
end end
// division takes the result from the next cycle, which is shifted to the left one more time so the square root also needs to be shifted // integer division takes the result from the next cycle, which is shifted to the left one more time so the square root also needs to be shifted
assign PreFPIntDivResultM = $signed(PreResultM >>> NormShiftM); assign PreFPIntDivResultM = $signed(PreResultM >>> NormShiftM);
assign SpecialFPIntDivResultM = BZeroM ? (RemOpM ? AM : {(`XLEN){1'b1}}) : PreFPIntDivResultM[`XLEN-1:0]; // special cases assign SpecialFPIntDivResultM = BZeroM ? (RemOpM ? AM : {(`XLEN){1'b1}}) : PreFPIntDivResultM[`XLEN-1:0]; // special cases