Xavi/cvw
1
0
Fork 0
forked from Github_Repos/cvw
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Refactored Floating point division special case detection to avoid spurious trigger on Y for sqrt)

Browse Source
This commit is contained in:
David Harris 2023-03-02 20:00:47 -08:00
parent c761fb1054
commit d51d93a3a8
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
src/fpu/fdivsqrt/fdivsqrtfsm.sv
View File

@ -62,7 +62,7 @@ module fdivsqrtfsm(
assign FDivBusyE = (state == BUSY) | IFDivStartE;
// terminate immediately on special cases
assign FSpecialCaseE = XZeroE | (YZeroE&~SqrtE) | XInfE | YInfE | XNaNE | YNaNE | (XsE&SqrtE);
assign FSpecialCaseE = XZeroE | | XInfE | XNaNE | (XsE&SqrtE) | (YZeroE | YInfE | YNaNE)&~SqrtE;
if (`IDIV_ON_FPU) assign SpecialCaseE = IntDivE ? ISpecialCaseE : FSpecialCaseE;
else assign SpecialCaseE = FSpecialCaseE;
flopenr #(1) SpecialCaseReg(clk, reset, IFDivStartE, SpecialCaseE, SpecialCaseM); // save SpecialCase for checking in fdivsqrtpostproc