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yosys/tests/simple/case_large.v

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Fix "make vgtest" so it runs to the end (but now it fails ;) Signed-off-by: Claire Xenia Wolf <claire@clairexen.net>
2021-09-22 10:34:20 -05:00
module case_lage_top (
proc_rmdead: use explicit pattern set when there are no wildcards If width of a case expression was large, explicit patterns could cause the existing logic to take an extremely long time, or exhaust the maximum size of the underlying set. For cases where all of the patterns are fully defined and there are no constants in the case expression, this change uses a simple set to track which patterns have been seen.
2021-07-28 16:34:24 -05:00
input wire [127:0] x,
output reg [31:0] y
);
localparam A = 32'hDEAD_BEEF;
localparam B = 32'h0BAD_0B01;
localparam C = 32'hC001_D00D;
localparam D = 32'h1234_5678;
always @*
case (x)
{C,A,D,B}: y = 142;
{C,A,D,A}: y = 141;
{D,D,A,A}: y = 241;
{A,C,C,D}: y = 44;
{A,A,A,C}: y = 3;
{A,B,A,C}: y = 19;
{A,D,C,C}: y = 59;
{A,A,C,C}: y = 11;
{D,C,B,B}: y = 230;
{A,A,D,D}: y = 16;
{A,C,A,A}: y = 33;
{A,D,D,D}: y = 64;
{D,B,C,B}: y = 218;
{A,C,B,D}: y = 40;
{C,A,B,B}: y = 134;
{A,C,C,C}: y = 43;
{D,A,D,D}: y = 208;
{A,B,C,A}: y = 25;
{B,A,B,B}: y = 70;
{A,C,B,B}: y = 38;
{C,C,C,B}: y = 170;
{C,D,A,C}: y = 179;
{B,C,D,B}: y = 110;
{A,D,A,C}: y = 51;
{C,C,B,B}: y = 166;
{D,D,D,B}: y = 254;
{C,A,D,C}: y = 143;
{C,D,D,B}: y = 190;
{C,B,A,A}: y = 145;
{C,B,A,C}: y = 147;
{B,C,C,B}: y = 106;
{C,D,C,A}: y = 185;
{C,D,B,D}: y = 184;
{D,D,D,D}: y = 256;
{D,C,C,C}: y = 235;
{D,C,D,B}: y = 238;
{A,B,D,C}: y = 31;
{A,C,A,D}: y = 36;
{C,B,C,B}: y = 154;
{A,B,A,A}: y = 17;
{C,B,B,A}: y = 149;
{B,B,D,C}: y = 95;
{B,D,C,B}: y = 122;
{D,B,A,A}: y = 209;
{B,A,B,A}: y = 69;
{B,A,D,A}: y = 77;
{A,B,B,B}: y = 22;
{C,C,C,C}: y = 171;
{C,A,C,B}: y = 138;
{B,A,D,D}: y = 80;
{C,D,D,C}: y = 191;
{B,A,A,C}: y = 67;
{D,C,D,C}: y = 239;
{C,D,D,D}: y = 192;
{C,D,B,B}: y = 182;
{B,B,A,C}: y = 83;
{D,A,A,D}: y = 196;
{A,C,C,B}: y = 42;
{B,C,A,A}: y = 97;
{A,D,B,A}: y = 53;
{D,D,B,C}: y = 247;
{A,A,C,A}: y = 9;
{D,A,C,B}: y = 202;
{A,C,B,C}: y = 39;
{B,C,B,A}: y = 101;
{B,B,B,C}: y = 87;
{C,B,A,B}: y = 146;
{B,D,A,D}: y = 116;
{A,B,D,D}: y = 32;
{B,A,B,C}: y = 71;
{C,A,A,A}: y = 129;
{B,A,D,C}: y = 79;
{B,A,C,B}: y = 74;
{B,B,D,B}: y = 94;
{B,B,C,C}: y = 91;
{D,C,C,A}: y = 233;
{C,A,B,A}: y = 133;
{D,A,B,A}: y = 197;
{D,B,B,D}: y = 216;
{C,C,A,C}: y = 163;
{D,D,B,A}: y = 245;
{B,A,D,B}: y = 78;
{A,B,C,D}: y = 28;
{C,C,C,D}: y = 172;
{D,C,A,D}: y = 228;
{A,C,D,A}: y = 45;
{B,D,C,C}: y = 123;
{C,B,A,D}: y = 148;
{B,D,B,B}: y = 118;
{A,D,A,B}: y = 50;
{C,B,B,C}: y = 151;
{A,A,A,A}: y = 1;
{A,A,B,B}: y = 6;
{B,B,B,B}: y = 86;
{A,D,A,A}: y = 49;
{A,A,A,B}: y = 2;
{B,D,D,A}: y = 125;
{C,C,D,B}: y = 174;
{D,A,D,B}: y = 206;
{D,D,B,D}: y = 248;
{A,A,A,D}: y = 4;
{B,A,A,B}: y = 66;
{B,C,C,A}: y = 105;
{B,C,C,C}: y = 107;
{D,D,D,C}: y = 255;
{B,C,D,D}: y = 112;
{A,D,B,C}: y = 55;
{C,C,C,A}: y = 169;
{C,D,B,C}: y = 183;
{A,A,B,D}: y = 8;
{D,C,B,A}: y = 229;
{C,B,D,A}: y = 157;
{A,D,D,C}: y = 63;
{D,A,D,A}: y = 205;
{A,A,B,C}: y = 7;
{A,C,A,B}: y = 34;
{C,B,D,C}: y = 159;
{C,C,D,D}: y = 176;
{D,D,D,A}: y = 253;
{A,B,B,D}: y = 24;
{B,B,C,A}: y = 89;
{B,D,C,A}: y = 121;
{A,B,C,C}: y = 27;
{A,A,D,C}: y = 15;
{A,B,B,A}: y = 21;
{A,D,A,D}: y = 52;
{D,D,C,C}: y = 251;
{C,D,A,B}: y = 178;
{A,A,D,B}: y = 14;
{D,B,D,B}: y = 222;
{A,C,C,A}: y = 41;
{D,D,A,C}: y = 243;
{A,C,D,B}: y = 46;
{B,B,B,D}: y = 88;
{D,B,B,B}: y = 214;
{C,C,B,D}: y = 168;
{A,D,D,A}: y = 61;
{D,A,C,C}: y = 203;
{D,C,A,C}: y = 227;
{C,D,C,D}: y = 188;
{D,B,D,D}: y = 224;
{A,C,D,C}: y = 47;
{B,A,B,D}: y = 72;
{A,B,B,C}: y = 23;
{C,C,D,A}: y = 173;
{D,B,C,C}: y = 219;
{D,B,C,A}: y = 217;
{A,D,C,D}: y = 60;
{B,B,D,A}: y = 93;
{A,D,C,A}: y = 57;
{C,C,A,A}: y = 161;
{C,B,B,D}: y = 152;
{B,B,B,A}: y = 85;
{B,D,A,A}: y = 113;
{D,C,D,A}: y = 237;
{B,C,B,C}: y = 103;
{A,B,C,B}: y = 26;
{C,D,A,D}: y = 180;
{A,D,B,D}: y = 56;
{D,C,A,B}: y = 226;
{D,B,B,C}: y = 215;
{D,A,B,C}: y = 199;
{B,D,A,C}: y = 115;
{C,B,C,D}: y = 156;
{B,D,D,B}: y = 126;
{D,D,C,B}: y = 250;
{D,C,C,D}: y = 236;
{B,C,B,D}: y = 104;
{C,B,C,A}: y = 153;
{C,B,B,B}: y = 150;
{C,D,C,B}: y = 186;
{C,D,C,C}: y = 187;
{A,D,B,B}: y = 54;
{D,C,C,B}: y = 234;
{C,B,D,D}: y = 160;
{A,B,A,D}: y = 20;
{C,C,B,A}: y = 165;
{C,D,D,A}: y = 189;
{C,C,D,C}: y = 175;
{D,B,D,C}: y = 223;
{B,C,A,B}: y = 98;
{C,C,A,B}: y = 162;
{B,C,D,A}: y = 109;
{D,A,B,D}: y = 200;
{B,D,C,D}: y = 124;
{D,D,C,A}: y = 249;
{B,A,C,C}: y = 75;
{A,A,C,B}: y = 10;
{C,A,B,D}: y = 136;
{B,B,C,D}: y = 92;
{D,D,C,D}: y = 252;
{B,C,A,D}: y = 100;
{C,A,C,C}: y = 139;
{C,A,C,D}: y = 140;
{D,C,A,A}: y = 225;
{A,D,C,B}: y = 58;
{D,B,C,D}: y = 220;
{D,C,B,D}: y = 232;
{B,A,C,D}: y = 76;
{B,B,D,D}: y = 96;
{D,D,B,B}: y = 246;
{C,D,A,A}: y = 177;
{D,D,A,B}: y = 242;
{A,A,D,A}: y = 13;
{B,B,A,D}: y = 84;
{B,C,D,C}: y = 111;
{D,A,A,B}: y = 194;
{C,A,B,C}: y = 135;
{D,A,A,C}: y = 195;
{B,B,A,B}: y = 82;
{D,C,D,D}: y = 240;
{B,C,C,D}: y = 108;
{D,B,A,C}: y = 211;
{A,C,D,D}: y = 48;
{D,A,A,A}: y = 193;
{C,A,A,B}: y = 130;
{D,B,A,D}: y = 212;
{D,A,B,B}: y = 198;
{A,C,B,A}: y = 37;
{B,D,B,D}: y = 120;
{C,C,B,C}: y = 167;
{D,B,A,B}: y = 210;
{A,B,A,B}: y = 18;
{B,C,B,B}: y = 102;
{B,B,A,A}: y = 81;
{D,D,A,D}: y = 244;
{A,B,D,B}: y = 30;
{A,C,A,C}: y = 35;
{A,A,C,D}: y = 12;
{B,D,B,C}: y = 119;
{B,C,A,C}: y = 99;
{D,A,C,A}: y = 201;
{B,A,A,D}: y = 68;
{C,A,A,D}: y = 132;
{B,A,C,A}: y = 73;
{C,C,A,D}: y = 164;
{B,D,B,A}: y = 117;
{A,D,D,B}: y = 62;
{B,D,D,C}: y = 127;
{A,B,D,A}: y = 29;
{C,D,B,A}: y = 181;
{B,B,C,B}: y = 90;
{B,D,A,B}: y = 114;
{B,D,D,D}: y = 128;
{C,A,C,A}: y = 137;
{A,A,B,A}: y = 5;
{C,A,D,D}: y = 144;
{D,C,B,C}: y = 231;
{D,A,C,D}: y = 204;
{C,A,A,C}: y = 131;
{C,B,D,B}: y = 158;
{B,A,A,A}: y = 65;
{D,A,D,C}: y = 207;
{D,B,B,A}: y = 213;
{D,B,D,A}: y = 221;
{C,B,C,C}: y = 155;
default: y = 0;
endcase
endmodule