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decode op_mod optimization

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This commit is contained in:
Blaise Tine
2020-08-24 02:55:14 -07:00
parent f292e5003d
commit 57971f6c76
25 changed files with 221 additions and 209 deletions
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23
hw/rtl/fp_cores/VX_fpnew.v
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@@ -17,8 +17,8 @@ module VX_fpnew #(
input wire [TAGW-1:0] tag_in,
input wire [`FPU_BITS-1:0] op,
input wire [`FRM_BITS-1:0] frm,
input wire [`FPU_BITS-1:0] op_type,
input wire [`MOD_BITS-1:0] frm,
input wire [`NUM_THREADS-1:0][31:0] dataa,
input wire [`NUM_THREADS-1:0][31:0] datab,
@@ -91,7 +91,7 @@ module VX_fpnew #(
fpu_operands[0] = dataa;
fpu_operands[1] = datab;
fpu_operands[2] = datac;
case (op)
case (op_type)
`FPU_ADD: begin
fpu_op = fpnew_pkg::ADD;
fpu_operands[1] = dataa;
@@ -110,19 +110,22 @@ module VX_fpnew #(
`FPU_MSUB: begin fpu_op = fpnew_pkg::FMADD; fpu_op_mod = 1; end
`FPU_NMSUB: begin fpu_op = fpnew_pkg::FNMSUB; end
`FPU_NMADD: begin fpu_op = fpnew_pkg::FNMSUB; fpu_op_mod = 1; end
`FPU_SGNJ: begin fpu_op = fpnew_pkg::SGNJ; fpu_rnd = `FRM_RNE; fpu_has_fflags = 0; end
`FPU_SGNJN: begin fpu_op = fpnew_pkg::SGNJ; fpu_rnd = `FRM_RTZ; fpu_has_fflags = 0; end
`FPU_SGNJX: begin fpu_op = fpnew_pkg::SGNJ; fpu_rnd = `FRM_RDN; fpu_has_fflags = 0; end
`FPU_MIN: begin fpu_op = fpnew_pkg::MINMAX; fpu_rnd = `FRM_RNE; end
`FPU_MAX: begin fpu_op = fpnew_pkg::MINMAX; fpu_rnd = `FRM_RTZ; end
`FPU_CVTWS: begin fpu_op = fpnew_pkg::F2I; end
`FPU_CVTWUS:begin fpu_op = fpnew_pkg::F2I; fpu_op_mod = 1; end
`FPU_CVTSW: begin fpu_op = fpnew_pkg::I2F; end
`FPU_CVTSWU:begin fpu_op = fpnew_pkg::I2F; fpu_op_mod = 1; end
`FPU_MVXW: begin fpu_op = fpnew_pkg::SGNJ; fpu_rnd = `FRM_RUP; fpu_has_fflags = 0; end
`FPU_MVWX: begin fpu_op = fpnew_pkg::SGNJ; fpu_rnd = `FRM_RUP; fpu_has_fflags = 0; end
`FPU_CLASS: begin fpu_op = fpnew_pkg::CLASSIFY; fpu_has_fflags = 0; end
`FPU_CMP: begin fpu_op = fpnew_pkg::CMP; end
`FPU_MISC: begin
case (frm)
0: begin fpu_op = fpnew_pkg::SGNJ; fpu_rnd = `FRM_RNE; fpu_has_fflags = 0; end
1: begin fpu_op = fpnew_pkg::SGNJ; fpu_rnd = `FRM_RTZ; fpu_has_fflags = 0; end
2: begin fpu_op = fpnew_pkg::SGNJ; fpu_rnd = `FRM_RDN; fpu_has_fflags = 0; end
3: begin fpu_op = fpnew_pkg::MINMAX; fpu_rnd = `FRM_RNE; end
4: begin fpu_op = fpnew_pkg::MINMAX; fpu_rnd = `FRM_RTZ; end
default: begin fpu_op = fpnew_pkg::SGNJ; fpu_rnd = `FRM_RUP; fpu_has_fflags = 0; end
endcase
end
default:;
endcase
end