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Update one bug in testfloat - still have to fix fpdiv but others should now all work

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James Stine 2023-04-02 18:16:23 -05:00
parent 37d289cf44
commit e3f3f14216
1 changed files with 155 additions and 154 deletions
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testbench/testbench-fp.sv
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@ -1,7 +1,8 @@
/////////////////////////////////////////// <///////////////////////////////////////////
// //
// Written: me@KatherineParry.com // Written: me@KatherineParry.com
// Modified: 7/5/2022 // Modified: 7/5/2022
// Modified: 4/2/2023
// //
// Purpose: Testbench for Testfloat // Purpose: Testbench for Testfloat
// //
@ -32,75 +33,74 @@
module testbenchfp; module testbenchfp;
parameter TEST="none"; parameter TEST="none";
string Tests[]; // list of tests to be run string Tests[]; // list of tests to be run
logic [2:0] OpCtrl[]; // list of op controls logic [2:0] OpCtrl[]; // list of op controls
logic [2:0] Unit[]; // list of units being tested logic [2:0] Unit[]; // list of units being tested
logic WriteInt[]; // Is being written to integer resgiter logic WriteInt[]; // Is being written to integer resgiter
logic [2:0] Frm[4:0] = {3'b100, 3'b010, 3'b011, 3'b001, 3'b000}; // rounding modes: rne-000, rz-001, ru-011, rd-010, rnm-100 logic [2:0] Frm[4:0] = {3'b100, 3'b010, 3'b011, 3'b001, 3'b000}; // rounding modes: rne-000, rz-001, ru-011, rd-010, rnm-100
logic [1:0] Fmt[]; // list of formats for the other units logic [1:0] Fmt[]; // list of formats for the other units
logic clk=0;
logic [31:0] TestNum=0; // index for the test
logic [31:0] OpCtrlNum=0; // index for OpCtrl
logic [31:0] errors=0; // how many errors
logic [31:0] VectorNum=0; // index for test vector
logic [31:0] FrmNum=0; // index for rounding mode
logic [`FLEN*4+7:0] TestVectors[8388609:0]; // list of test vectors
logic clk=0; logic [1:0] FmtVal; // value of the current Fmt
logic [31:0] TestNum=0; // index for the test logic [2:0] UnitVal, OpCtrlVal, FrmVal; // value of the currnet Unit/OpCtrl/FrmVal
logic [31:0] OpCtrlNum=0; // index for OpCtrl logic WriteIntVal; // value of the current WriteInt
logic [31:0] errors=0; // how many errors logic [`FLEN-1:0] X, Y, Z; // inputs read from TestFloat
logic [31:0] VectorNum=0; // index for test vector logic [`XLEN-1:0] SrcA; // integer input
logic [31:0] FrmNum=0; // index for rounding mode logic [`FLEN-1:0] Ans; // correct answer from TestFloat
logic [`FLEN*4+7:0] TestVectors[8388609:0]; // list of test vectors logic [`FLEN-1:0] Res; // result from other units
logic [4:0] AnsFlg; // correct flags read from testfloat
logic [1:0] FmtVal; // value of the current Fmt logic [4:0] ResFlg, Flg; // Result flags
logic [2:0] UnitVal, OpCtrlVal, FrmVal; // value of the currnet Unit/OpCtrl/FrmVal logic [`FMTBITS-1:0] ModFmt; // format - 10 = half, 00 = single, 01 = double, 11 = quad
logic WriteIntVal; // value of the current WriteInt logic [`FLEN-1:0] FpRes, FpCmpRes; // Results from each unit
logic [`FLEN-1:0] X, Y, Z; // inputs read from TestFloat logic [`XLEN-1:0] IntRes, CmpRes; // Results from each unit
logic [`XLEN-1:0] SrcA; // integer input logic [4:0] FmaFlg, CvtFlg, DivFlg, CmpFlg; // Outputed flags
logic [`FLEN-1:0] Ans; // correct answer from TestFloat logic AnsNaN, ResNaN, NaNGood;
logic [`FLEN-1:0] Res; // result from other units logic Xs, Ys, Zs; // sign of the inputs
logic [4:0] AnsFlg; // correct flags read from testfloat logic [`NE-1:0] Xe, Ye, Ze; // exponent of the inputs
logic [4:0] ResFlg, Flg; // Result flags logic [`NF:0] Xm, Ym, Zm; // mantissas of the inputs
logic [`FMTBITS-1:0] ModFmt; // format - 10 = half, 00 = single, 01 = double, 11 = quad logic XNaN, YNaN, ZNaN; // is the input NaN
logic [`FLEN-1:0] FpRes, FpCmpRes; // Results from each unit logic XSNaN, YSNaN, ZSNaN; // is the input a signaling NaN
logic [`XLEN-1:0] IntRes, CmpRes; // Results from each unit logic XSubnorm, ZSubnorm; // is the input denormalized
logic [4:0] FmaFlg, CvtFlg, DivFlg, CmpFlg; // Outputed flags logic XInf, YInf, ZInf; // is the input infinity
logic AnsNaN, ResNaN, NaNGood; logic XZero, YZero, ZZero; // is the input zero
logic Xs, Ys, Zs; // sign of the inputs logic XExpMax, YExpMax, ZExpMax; // is the input's exponent all ones
logic [`NE-1:0] Xe, Ye, Ze; // exponent of the inputs logic [`CVTLEN-1:0] CvtLzcInE; // input to the Leading Zero Counter (priority encoder)
logic [`NF:0] Xm, Ym, Zm; // mantissas of the inputs logic IntZero;
logic XNaN, YNaN, ZNaN; // is the input NaN logic CvtResSgnE;
logic XSNaN, YSNaN, ZSNaN; // is the input a signaling NaN logic [`NE:0] CvtCalcExpE; // the calculated expoent
logic XSubnorm, ZSubnorm; // is the input denormalized logic [`LOGCVTLEN-1:0] CvtShiftAmtE; // how much to shift by
logic XInf, YInf, ZInf; // is the input infinity logic [`DIVb:0] Quot;
logic XZero, YZero, ZZero; // is the input zero logic CvtResSubnormUfE;
logic XExpMax, YExpMax, ZExpMax; // is the input's exponent all ones logic DivStart, FDivBusyE, OldFDivBusyE;
logic [`CVTLEN-1:0] CvtLzcInE; // input to the Leading Zero Counter (priority encoder) logic reset = 1'b0;
logic IntZero; logic [$clog2(`NF+2)-1:0] XZeroCnt, YZeroCnt;
logic CvtResSgnE; logic [`DURLEN-1:0] Dur;
logic [`NE:0] CvtCalcExpE; // the calculated expoent
logic [`LOGCVTLEN-1:0] CvtShiftAmtE; // how much to shift by
logic [`DIVb:0] Quot;
logic CvtResSubnormUfE;
logic DivStart, FDivBusyE, OldFDivBusyE;
logic reset = 1'b0;
logic [$clog2(`NF+2)-1:0] XZeroCnt, YZeroCnt;
logic [`DURLEN-1:0] Dur;
// in-between FMA signals // in-between FMA signals
logic Mult; logic Mult;
logic Ss; logic Ss;
logic [`NE+1:0] Pe; logic [`NE+1:0] Pe;
logic [`NE+1:0] Se; logic [`NE+1:0] Se;
logic ASticky; logic ASticky;
logic KillProd; logic KillProd;
logic [$clog2(3*`NF+5)-1:0] SCnt; logic [$clog2(3*`NF+5)-1:0] SCnt;
logic [3*`NF+3:0] Sm; logic [3*`NF+3:0] Sm;
logic InvA; logic InvA;
logic NegSum; logic NegSum;
logic As; logic As;
logic Ps; logic Ps;
logic DivSticky; logic DivSticky;
logic DivDone; logic DivDone;
logic DivNegSticky; logic DivNegSticky;
logic [`NE+1:0] DivCalcExp; logic [`NE+1:0] DivCalcExp;
logic divsqrtop; logic divsqrtop;
/////////////////////////////////////////////////////////////////////////////////////////////// ///////////////////////////////////////////////////////////////////////////////////////////////
@ -126,28 +126,28 @@ module testbenchfp;
$display("TEST is %s", TEST); $display("TEST is %s", TEST);
if (`Q_SUPPORTED) begin // if Quad percision is supported if (`Q_SUPPORTED) begin // if Quad percision is supported
if (TEST === "cvtint"| TEST === "all") begin // if testing integer conversion if (TEST === "cvtint"| TEST === "all") begin // if testing integer conversion
// add the 128-bit cvtint tests to the to-be-tested list // add the 128-bit cvtint tests to the to-be-tested list
Tests = {Tests, f128rv32cvtint}; Tests = {Tests, f128rv32cvtint};
// add the op-codes for these tests to the op-code list // add the op-codes for these tests to the op-code list
OpCtrl = {OpCtrl, `FROM_UI_OPCTRL, `FROM_I_OPCTRL, `TO_UI_OPCTRL, `TO_I_OPCTRL}; OpCtrl = {OpCtrl, `FROM_UI_OPCTRL, `FROM_I_OPCTRL, `TO_UI_OPCTRL, `TO_I_OPCTRL};
WriteInt = {WriteInt, 1'b0, 1'b0, 1'b1, 1'b1}; WriteInt = {WriteInt, 1'b0, 1'b0, 1'b1, 1'b1};
// add what unit is used and the fmt to their lists (one for each test) // add what unit is used and the fmt to their lists (one for each test)
for(int i = 0; i<20; i++) begin for(int i = 0; i<20; i++) begin
Unit = {Unit, `CVTINTUNIT}; Unit = {Unit, `CVTINTUNIT};
Fmt = {Fmt, 2'b11}; Fmt = {Fmt, 2'b11};
end end
if (`XLEN == 64) begin // if 64-bit integers are supported add their conversions if (`XLEN == 64) begin // if 64-bit integers are supported add their conversions
Tests = {Tests, f128rv64cvtint}; Tests = {Tests, f128rv64cvtint};
// add the op-codes for these tests to the op-code list // add the op-codes for these tests to the op-code list
OpCtrl = {OpCtrl, `FROM_UL_OPCTRL, `FROM_L_OPCTRL, `TO_UL_OPCTRL, `TO_L_OPCTRL}; OpCtrl = {OpCtrl, `FROM_UL_OPCTRL, `FROM_L_OPCTRL, `TO_UL_OPCTRL, `TO_L_OPCTRL};
WriteInt = {WriteInt, 1'b0, 1'b0, 1'b1, 1'b1}; WriteInt = {WriteInt, 1'b0, 1'b0, 1'b1, 1'b1};
// add what unit is used and the fmt to their lists (one for each test) // add what unit is used and the fmt to their lists (one for each test)
for(int i = 0; i<20; i++) begin for(int i = 0; i<20; i++) begin
Unit = {Unit, `CVTINTUNIT}; Unit = {Unit, `CVTINTUNIT};
Fmt = {Fmt, 2'b11}; Fmt = {Fmt, 2'b11};
end end
end end
end end
if (TEST === "cvtfp" | TEST === "all") begin // if the floating-point conversions are being tested if (TEST === "cvtfp" | TEST === "all") begin // if the floating-point conversions are being tested
if(`D_SUPPORTED) begin // if double precision is supported if(`D_SUPPORTED) begin // if double precision is supported
// add the 128 <-> 64 bit conversions to the to-be-tested list // add the 128 <-> 64 bit conversions to the to-be-tested list
@ -270,27 +270,27 @@ module testbenchfp;
end end
if (`D_SUPPORTED) begin // if double precision is supported if (`D_SUPPORTED) begin // if double precision is supported
if (TEST === "cvtint"| TEST === "all") begin // if integer conversion is being tested if (TEST === "cvtint"| TEST === "all") begin // if integer conversion is being tested
Tests = {Tests, f64rv32cvtint}; Tests = {Tests, f64rv32cvtint};
// add the op-codes for these tests to the op-code list // add the op-codes for these tests to the op-code list
OpCtrl = {OpCtrl, `FROM_UI_OPCTRL, `FROM_I_OPCTRL, `TO_UI_OPCTRL, `TO_I_OPCTRL}; OpCtrl = {OpCtrl, `FROM_UI_OPCTRL, `FROM_I_OPCTRL, `TO_UI_OPCTRL, `TO_I_OPCTRL};
WriteInt = {WriteInt, 1'b0, 1'b0, 1'b1, 1'b1}; WriteInt = {WriteInt, 1'b0, 1'b0, 1'b1, 1'b1};
// add what unit is used and the fmt to their lists (one for each test) // add what unit is used and the fmt to their lists (one for each test)
for(int i = 0; i<20; i++) begin for(int i = 0; i<20; i++) begin
Unit = {Unit, `CVTINTUNIT}; Unit = {Unit, `CVTINTUNIT};
Fmt = {Fmt, 2'b01}; Fmt = {Fmt, 2'b01};
end end
if (`XLEN == 64) begin // if 64-bit integers are being supported if (`XLEN == 64) begin // if 64-bit integers are being supported
Tests = {Tests, f64rv64cvtint}; Tests = {Tests, f64rv64cvtint};
// add the op-codes for these tests to the op-code list // add the op-codes for these tests to the op-code list
OpCtrl = {OpCtrl, `FROM_UL_OPCTRL, `FROM_L_OPCTRL, `TO_UL_OPCTRL, `TO_L_OPCTRL}; OpCtrl = {OpCtrl, `FROM_UL_OPCTRL, `FROM_L_OPCTRL, `TO_UL_OPCTRL, `TO_L_OPCTRL};
WriteInt = {WriteInt, 1'b0, 1'b0, 1'b1, 1'b1}; WriteInt = {WriteInt, 1'b0, 1'b0, 1'b1, 1'b1};
// add what unit is used and the fmt to their lists (one for each test) // add what unit is used and the fmt to their lists (one for each test)
for(int i = 0; i<20; i++) begin for(int i = 0; i<20; i++) begin
Unit = {Unit, `CVTINTUNIT}; Unit = {Unit, `CVTINTUNIT};
Fmt = {Fmt, 2'b01}; Fmt = {Fmt, 2'b01};
end end
end end
end end
if (TEST === "cvtfp" | TEST === "all") begin // if floating point conversions are being tested if (TEST === "cvtfp" | TEST === "all") begin // if floating point conversions are being tested
if(`F_SUPPORTED) begin // if single precision is supported if(`F_SUPPORTED) begin // if single precision is supported
// add the 64 <-> 32 bit conversions to the to-be-tested list // add the 64 <-> 32 bit conversions to the to-be-tested list
@ -397,27 +397,27 @@ module testbenchfp;
end end
if (`F_SUPPORTED) begin // if single precision being supported if (`F_SUPPORTED) begin // if single precision being supported
if (TEST === "cvtint"| TEST === "all") begin // if integer conversion is being tested if (TEST === "cvtint"| TEST === "all") begin // if integer conversion is being tested
Tests = {Tests, f32rv32cvtint}; Tests = {Tests, f32rv32cvtint};
// add the op-codes for these tests to the op-code list // add the op-codes for these tests to the op-code list
OpCtrl = {OpCtrl, `FROM_UI_OPCTRL, `FROM_I_OPCTRL, `TO_UI_OPCTRL, `TO_I_OPCTRL}; OpCtrl = {OpCtrl, `FROM_UI_OPCTRL, `FROM_I_OPCTRL, `TO_UI_OPCTRL, `TO_I_OPCTRL};
WriteInt = {WriteInt, 1'b0, 1'b0, 1'b1, 1'b1}; WriteInt = {WriteInt, 1'b0, 1'b0, 1'b1, 1'b1};
// add what unit is used and the fmt to their lists (one for each test) // add what unit is used and the fmt to their lists (one for each test)
for(int i = 0; i<20; i++) begin for(int i = 0; i<20; i++) begin
Unit = {Unit, `CVTINTUNIT}; Unit = {Unit, `CVTINTUNIT};
Fmt = {Fmt, 2'b00}; Fmt = {Fmt, 2'b00};
end end
if (`XLEN == 64) begin // if 64-bit integers are supported if (`XLEN == 64) begin // if 64-bit integers are supported
Tests = {Tests, f32rv64cvtint}; Tests = {Tests, f32rv64cvtint};
// add the op-codes for these tests to the op-code list // add the op-codes for these tests to the op-code list
OpCtrl = {OpCtrl, `FROM_UL_OPCTRL, `FROM_L_OPCTRL, `TO_UL_OPCTRL, `TO_L_OPCTRL}; OpCtrl = {OpCtrl, `FROM_UL_OPCTRL, `FROM_L_OPCTRL, `TO_UL_OPCTRL, `TO_L_OPCTRL};
WriteInt = {WriteInt, 1'b0, 1'b0, 1'b1, 1'b1}; WriteInt = {WriteInt, 1'b0, 1'b0, 1'b1, 1'b1};
// add what unit is used and the fmt to their lists (one for each test) // add what unit is used and the fmt to their lists (one for each test)
for(int i = 0; i<20; i++) begin for(int i = 0; i<20; i++) begin
Unit = {Unit, `CVTINTUNIT}; Unit = {Unit, `CVTINTUNIT};
Fmt = {Fmt, 2'b00}; Fmt = {Fmt, 2'b00};
end end
end end
end end
if (TEST === "cvtfp" | TEST === "all") begin // if floating point conversion is being tested if (TEST === "cvtfp" | TEST === "all") begin // if floating point conversion is being tested
if(`ZFH_SUPPORTED) begin if(`ZFH_SUPPORTED) begin
// add the 32 <-> 16 bit conversions to the to-be-tested list // add the 32 <-> 16 bit conversions to the to-be-tested list
@ -508,27 +508,27 @@ module testbenchfp;
end end
if (`ZFH_SUPPORTED) begin // if half precision supported if (`ZFH_SUPPORTED) begin // if half precision supported
if (TEST === "cvtint"| TEST === "all") begin // if in conversions are being tested if (TEST === "cvtint"| TEST === "all") begin // if in conversions are being tested
Tests = {Tests, f16rv32cvtint}; Tests = {Tests, f16rv32cvtint};
// add the op-codes for these tests to the op-code list // add the op-codes for these tests to the op-code list
OpCtrl = {OpCtrl, `FROM_UI_OPCTRL, `FROM_I_OPCTRL, `TO_UI_OPCTRL, `TO_I_OPCTRL}; OpCtrl = {OpCtrl, `FROM_UI_OPCTRL, `FROM_I_OPCTRL, `TO_UI_OPCTRL, `TO_I_OPCTRL};
WriteInt = {WriteInt, 1'b0, 1'b0, 1'b1, 1'b1}; WriteInt = {WriteInt, 1'b0, 1'b0, 1'b1, 1'b1};
// add what unit is used and the fmt to their lists (one for each test) // add what unit is used and the fmt to their lists (one for each test)
for(int i = 0; i<20; i++) begin for(int i = 0; i<20; i++) begin
Unit = {Unit, `CVTINTUNIT}; Unit = {Unit, `CVTINTUNIT};
Fmt = {Fmt, 2'b10}; Fmt = {Fmt, 2'b10};
end end
if (`XLEN == 64) begin // if 64-bit integers are supported if (`XLEN == 64) begin // if 64-bit integers are supported
Tests = {Tests, f16rv64cvtint}; Tests = {Tests, f16rv64cvtint};
// add the op-codes for these tests to the op-code list // add the op-codes for these tests to the op-code list
OpCtrl = {OpCtrl, `FROM_UL_OPCTRL, `FROM_L_OPCTRL, `TO_UL_OPCTRL, `TO_L_OPCTRL}; OpCtrl = {OpCtrl, `FROM_UL_OPCTRL, `FROM_L_OPCTRL, `TO_UL_OPCTRL, `TO_L_OPCTRL};
WriteInt = {WriteInt, 1'b0, 1'b0, 1'b1, 1'b1}; WriteInt = {WriteInt, 1'b0, 1'b0, 1'b1, 1'b1};
// add what unit is used and the fmt to their lists (one for each test) // add what unit is used and the fmt to their lists (one for each test)
for(int i = 0; i<20; i++) begin for(int i = 0; i<20; i++) begin
Unit = {Unit, `CVTINTUNIT}; Unit = {Unit, `CVTINTUNIT};
Fmt = {Fmt, 2'b10}; Fmt = {Fmt, 2'b10};
end end
end end
end end
if (TEST === "cmp" | TEST === "all") begin // if comparisions are being tested if (TEST === "cmp" | TEST === "all") begin // if comparisions are being tested
// add the correct tests/op-ctrls/unit/fmt to their lists // add the correct tests/op-ctrls/unit/fmt to their lists
Tests = {Tests, f16cmp}; Tests = {Tests, f16cmp};
@ -656,7 +656,8 @@ module testbenchfp;
end end
// extract the inputs (X, Y, Z, SrcA) and the output (Ans, AnsFlg) from the current test vector // extract the inputs (X, Y, Z, SrcA) and the output (Ans, AnsFlg) from the current test vector
readvectors readvectors (.clk, .Fmt(FmtVal), .ModFmt, .TestVector(TestVectors[VectorNum]), .VectorNum, .Ans(Ans), .AnsFlg(AnsFlg), .SrcA, readvectors readvectors (.clk, .Fmt(FmtVal), .ModFmt, .TestVector(TestVectors[VectorNum]),
.VectorNum, .Ans(Ans), .AnsFlg(AnsFlg), .SrcA,
.Xs, .Ys, .Zs, .Unit(UnitVal), .Xs, .Ys, .Zs, .Unit(UnitVal),
.Xe, .Ye, .Ze, .TestNum, .OpCtrl(OpCtrlVal), .Xe, .Ye, .Ze, .TestNum, .OpCtrl(OpCtrlVal),
.Xm, .Ym, .Zm, .DivStart, .Xm, .Ym, .Zm, .DivStart,
@ -680,7 +681,7 @@ module testbenchfp;
/////////////////////////////////////////////////////////////////////////////////////////////// ///////////////////////////////////////////////////////////////////////////////////////////////
// instantiate devices under test // instantiate devices under test
if (TEST === "fma"| TEST === "mul" | TEST === "add" | TEST === "all") begin : fma if (TEST === "fma"| TEST === "mul" | TEST === "add" | TEST === "sub" | TEST === "all") begin : fma
fma fma(.Xs(Xs), .Ys(Ys), .Zs(Zs), fma fma(.Xs(Xs), .Ys(Ys), .Zs(Zs),
.Xe(Xe), .Ye(Ye), .Ze(Ze), .Xe(Xe), .Ye(Ye), .Ze(Ze),
.Xm(Xm), .Ym(Ym), .Zm(Zm), .Xm(Xm), .Ym(Ym), .Zm(Zm),