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[rtl] Remove redundant comments in decoder

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Signed-off-by: Pirmin Vogel <vogelpi@lowrisc.org>
This commit is contained in:
Pirmin Vogel 2021-12-10 17:55:08 +01:00
parent 92a95cac32
commit 36c9f4e569
1 changed files with 24 additions and 24 deletions
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48
rtl/ibex_decoder.sv
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@ -1006,47 +1006,47 @@ module ibex_decoder #(
// RV32B ALU Operations
{7'b011_0000, 3'b001}: begin
if (RV32B != RV32BNone) begin
alu_operator_o = ALU_ROL; // rol
alu_operator_o = ALU_ROL;
alu_multicycle_o = 1'b1;
end
end
{7'b011_0000, 3'b101}: begin
if (RV32B != RV32BNone) begin
alu_operator_o = ALU_ROR; // ror
alu_operator_o = ALU_ROR;
alu_multicycle_o = 1'b1;
end
end
{7'b000_0101, 3'b100}: if (RV32B != RV32BNone) alu_operator_o = ALU_MIN; // min
{7'b000_0101, 3'b110}: if (RV32B != RV32BNone) alu_operator_o = ALU_MAX; // max
{7'b000_0101, 3'b101}: if (RV32B != RV32BNone) alu_operator_o = ALU_MINU; // minu
{7'b000_0101, 3'b111}: if (RV32B != RV32BNone) alu_operator_o = ALU_MAXU; // maxu
{7'b000_0101, 3'b100}: if (RV32B != RV32BNone) alu_operator_o = ALU_MIN;
{7'b000_0101, 3'b110}: if (RV32B != RV32BNone) alu_operator_o = ALU_MAX;
{7'b000_0101, 3'b101}: if (RV32B != RV32BNone) alu_operator_o = ALU_MINU;
{7'b000_0101, 3'b111}: if (RV32B != RV32BNone) alu_operator_o = ALU_MAXU;
{7'b000_0100, 3'b100}: if (RV32B != RV32BNone) alu_operator_o = ALU_PACK; // pack
{7'b010_0100, 3'b100}: if (RV32B != RV32BNone) alu_operator_o = ALU_PACKU; // packu
{7'b000_0100, 3'b111}: if (RV32B != RV32BNone) alu_operator_o = ALU_PACKH; // packh
{7'b000_0100, 3'b100}: if (RV32B != RV32BNone) alu_operator_o = ALU_PACK;
{7'b010_0100, 3'b100}: if (RV32B != RV32BNone) alu_operator_o = ALU_PACKU;
{7'b000_0100, 3'b111}: if (RV32B != RV32BNone) alu_operator_o = ALU_PACKH;
{7'b010_0000, 3'b100}: if (RV32B != RV32BNone) alu_operator_o = ALU_XNOR; // xnor
{7'b010_0000, 3'b110}: if (RV32B != RV32BNone) alu_operator_o = ALU_ORN; // orn
{7'b010_0000, 3'b111}: if (RV32B != RV32BNone) alu_operator_o = ALU_ANDN; // andn
{7'b010_0000, 3'b100}: if (RV32B != RV32BNone) alu_operator_o = ALU_XNOR;
{7'b010_0000, 3'b110}: if (RV32B != RV32BNone) alu_operator_o = ALU_ORN;
{7'b010_0000, 3'b111}: if (RV32B != RV32BNone) alu_operator_o = ALU_ANDN;
// RV32B zba
{7'b001_0000, 3'b010}: if (RV32B != RV32BNone) alu_operator_o = ALU_SH1ADD; // sh1add
{7'b001_0000, 3'b100}: if (RV32B != RV32BNone) alu_operator_o = ALU_SH2ADD; // sh2add
{7'b001_0000, 3'b110}: if (RV32B != RV32BNone) alu_operator_o = ALU_SH3ADD; // sh3add
{7'b001_0000, 3'b010}: if (RV32B != RV32BNone) alu_operator_o = ALU_SH1ADD;
{7'b001_0000, 3'b100}: if (RV32B != RV32BNone) alu_operator_o = ALU_SH2ADD;
{7'b001_0000, 3'b110}: if (RV32B != RV32BNone) alu_operator_o = ALU_SH3ADD;
// RV32B zbs
{7'b010_0100, 3'b001}: if (RV32B != RV32BNone) alu_operator_o = ALU_BCLR; // bclr
{7'b001_0100, 3'b001}: if (RV32B != RV32BNone) alu_operator_o = ALU_BSET; // bset
{7'b011_0100, 3'b001}: if (RV32B != RV32BNone) alu_operator_o = ALU_BINV; // binv
{7'b010_0100, 3'b101}: if (RV32B != RV32BNone) alu_operator_o = ALU_BEXT; // bext
{7'b010_0100, 3'b001}: if (RV32B != RV32BNone) alu_operator_o = ALU_BCLR;
{7'b001_0100, 3'b001}: if (RV32B != RV32BNone) alu_operator_o = ALU_BSET;
{7'b011_0100, 3'b001}: if (RV32B != RV32BNone) alu_operator_o = ALU_BINV;
{7'b010_0100, 3'b101}: if (RV32B != RV32BNone) alu_operator_o = ALU_BEXT;
// RV32B zbf
{7'b010_0100, 3'b111}: if (RV32B != RV32BNone) alu_operator_o = ALU_BFP; // bfp
{7'b010_0100, 3'b111}: if (RV32B != RV32BNone) alu_operator_o = ALU_BFP;
// RV32B zbp
{7'b011_0100, 3'b101}: if (RV32B != RV32BNone) alu_operator_o = ALU_GREV; // grev
{7'b001_0100, 3'b101}: if (RV32B != RV32BNone) alu_operator_o = ALU_GORC; // gorc
{7'b011_0100, 3'b101}: if (RV32B != RV32BNone) alu_operator_o = ALU_GREV;
{7'b001_0100, 3'b101}: if (RV32B != RV32BNone) alu_operator_o = ALU_GORC;
{7'b000_0100, 3'b001}: begin
if (RV32B == RV32BOTEarlGrey || RV32B == RV32BFull) alu_operator_o = ALU_SHFL;
end
@ -1083,13 +1083,13 @@ module ibex_decoder #(
// RV32B zbe
{7'b010_0100, 3'b110}: begin
if (RV32B == RV32BFull) begin
alu_operator_o = ALU_BDECOMPRESS; // bdecompress
alu_operator_o = ALU_BDECOMPRESS;
alu_multicycle_o = 1'b1;
end
end
{7'b000_0100, 3'b110}: begin
if (RV32B == RV32BFull) begin
alu_operator_o = ALU_BCOMPRESS; // bcompress
alu_operator_o = ALU_BCOMPRESS;
alu_multicycle_o = 1'b1;
end
end