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Update testbench-fp.sv to check result and flags for cvtint and cmp. This addresses fix for Issue #541. It also adds a temporary fix to avoid issues between tests. This will be fixed in an upcoming push where we use scanf instead of readmemh to help keep compatibility with Verilator. Additional testing is needed of new testbench-fp.sv before can push in new tb with scanf

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This commit is contained in:
James E. Stine 2024-01-12 00:32:18 -06:00
parent d31c28e2a3
commit dbe8394651
1 changed files with 8 additions and 16 deletions
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24
testbench/testbench-fp.sv
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@ -957,23 +957,15 @@ module testbenchfp;
$display("inputs: %h %h %h\nSrcA: %h\n Res: %h %h\n Expected: %h %h", X, Y, Z, SrcA, Res, ResFlg, Ans, AnsFlg);
$stop;
end
// TestFloat sets the result to all 1's when there is an invalid result, however in
// http://www.jhauser.us/arithmetic/TestFloat-3/doc/TestFloat-general.html it says
// for an unsigned integer result 0 is also okay
// TestFloat outputs 800... for both the largest integer values for both positive and negitive numbers but
// the riscv spec specifies 2^31-1 for positive values out of range and NaNs ie 7fff...
else if ( ((UnitVal === `CVTINTUNIT) | (UnitVal === `CMPUNIT)) & ~FlagMatch ) begin
// ResMatch & FlagMatch checks the result again. It is checked within the
// test again to avoid issues related when the values change tests (e.g., f16_eq_rne -> f16_eq_rz)
if (~(ResMatch & FlagMatch)) begin
errors += 1;
$display("\nError in %s", Tests[TestNum]);
$display("TestNum %d OpCtrl %d", TestNum, OpCtrl[TestNum]);
$display("inputs: %h %h %h\nSrcA: %h\n Res: %h %h\n Ans: %h %h", X, Y, Z, SrcA, Res, ResFlg, Ans, AnsFlg);
$stop;
end
// Check for conversion and comparisons
else if (((UnitVal === `CVTINTUNIT) | (UnitVal === `CMPUNIT)) &
~(ResMatch & FlagMatch) & (Ans[0] !== 1'bx)) begin
errors += 1;
$display("\nError in %s", Tests[TestNum]);
$display("TestNum %d OpCtrl %d", TestNum, OpCtrl[TestNum]);
$display("inputs: %h %h %h\nSrcA: %h\n Res: %h %h\n Ans: %h %h", X, Y, Z, SrcA, Res, ResFlg, Ans, AnsFlg);
$stop;
end
if (TestVectors[VectorNum][0] === 1'bx & Tests[TestNum] !== "") begin // if reached the eof