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minor optimization

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This commit is contained in:
Blaise Tine 2021-07-13 05:03:17 -07:00
parent 5c40422e4f
commit 25ef7d053c
1 changed files with 14 additions and 14 deletions
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28
hw/rtl/fp_cores/VX_fpu_fpga.v
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@ -48,25 +48,25 @@ module VX_fpu_fpga #(
reg do_madd, do_sub, do_neg, is_itof, is_signed;
always @(*) begin
do_madd = 'x;
do_sub = 'x;
do_neg = 'x;
is_itof = 'x;
is_signed = 'x;
do_madd = 0;
do_sub = 0;
do_neg = 0;
is_itof = 0;
is_signed = 0;
case (op_type)
`FPU_ADD: begin core_select = FPU_FMA; do_madd = 0; do_sub = 0; do_neg = 0; end
`FPU_SUB: begin core_select = FPU_FMA; do_madd = 0; do_sub = 1; do_neg = 0; end
`FPU_MUL: begin core_select = FPU_FMA; do_madd = 0; do_sub = 0; do_neg = 1; end
`FPU_MADD: begin core_select = FPU_FMA; do_madd = 1; do_sub = 0; do_neg = 0; end
`FPU_MSUB: begin core_select = FPU_FMA; do_madd = 1; do_sub = 1; do_neg = 0; end
`FPU_NMADD: begin core_select = FPU_FMA; do_madd = 1; do_sub = 0; do_neg = 1; end
`FPU_ADD: begin core_select = FPU_FMA; end
`FPU_SUB: begin core_select = FPU_FMA; do_sub = 1; end
`FPU_MUL: begin core_select = FPU_FMA; do_neg = 1; end
`FPU_MADD: begin core_select = FPU_FMA; do_madd = 1; end
`FPU_MSUB: begin core_select = FPU_FMA; do_madd = 1; do_sub = 1; end
`FPU_NMADD: begin core_select = FPU_FMA; do_madd = 1; do_neg = 1; end
`FPU_NMSUB: begin core_select = FPU_FMA; do_madd = 1; do_sub = 1; do_neg = 1; end
`FPU_DIV: begin core_select = FPU_DIV; end
`FPU_SQRT: begin core_select = FPU_SQRT; end
`FPU_CVTWS: begin core_select = FPU_CVT; is_itof = 0; is_signed = 1; end
`FPU_CVTWUS: begin core_select = FPU_CVT; is_itof = 0; is_signed = 0; end
`FPU_CVTWS: begin core_select = FPU_CVT; is_signed = 1; end
`FPU_CVTWUS: begin core_select = FPU_CVT; end
`FPU_CVTSW: begin core_select = FPU_CVT; is_itof = 1; is_signed = 1; end
`FPU_CVTSWU: begin core_select = FPU_CVT; is_itof = 1; is_signed = 0; end
`FPU_CVTSWU: begin core_select = FPU_CVT; is_itof = 1; end
default: begin core_select = FPU_NCP; end
endcase
end