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author | Clifford Wolf <clifford@clifford.at> | 2014-09-04 15:07:30 +0200 |
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committer | Clifford Wolf <clifford@clifford.at> | 2014-09-04 15:07:30 +0200 |
commit | 01ef34c147dd3e3e3d13864f9c726727a4013207 (patch) | |
tree | 472d5471b0e816959cadc25d883b1556221407e0 /tests/various/constmsk_testmap.v | |
parent | f5a40e70431bc09072ca79c22c356ec0c0c9bb8b (diff) | |
download | yosys-01ef34c147dd3e3e3d13864f9c726727a4013207.tar.gz yosys-01ef34c147dd3e3e3d13864f9c726727a4013207.tar.bz2 yosys-01ef34c147dd3e3e3d13864f9c726727a4013207.zip |
Added tests/various/constmsk_test.ys
Diffstat (limited to 'tests/various/constmsk_testmap.v')
-rw-r--r-- | tests/various/constmsk_testmap.v | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/tests/various/constmsk_testmap.v b/tests/various/constmsk_testmap.v new file mode 100644 index 000000000..fab1b1bbc --- /dev/null +++ b/tests/various/constmsk_testmap.v @@ -0,0 +1,49 @@ +(* techmap_celltype = "$reduce_or" *) +module my_opt_reduce_or(...); + parameter A_SIGNED = 0; + parameter A_WIDTH = 1; + parameter Y_WIDTH = 1; + + input [A_WIDTH-1:0] A; + output reg [Y_WIDTH-1:0] Y; + + parameter _TECHMAP_CONSTMSK_A_ = 0; + parameter _TECHMAP_CONSTVAL_A_ = 0; + + wire _TECHMAP_FAIL_ = count_nonconst_bits() == A_WIDTH; + wire [1024:0] _TECHMAP_DO_ = "proc;;"; + + function integer count_nonconst_bits; + integer i; + begin + count_nonconst_bits = 0; + for (i = 0; i < A_WIDTH; i=i+1) + if (!_TECHMAP_CONSTMSK_A_[i]) + count_nonconst_bits = count_nonconst_bits+1; + end + endfunction + + function has_const_one; + integer i; + begin + has_const_one = 0; + for (i = 0; i < A_WIDTH; i=i+1) + if (_TECHMAP_CONSTMSK_A_[i] && _TECHMAP_CONSTVAL_A_[i] === 1'b1) + has_const_one = 1; + end + endfunction + + integer i; + reg [count_nonconst_bits()-1:0] tmp; + + always @* begin + if (has_const_one()) begin + Y = 1; + end else begin + for (i = 0; i < A_WIDTH; i=i+1) + if (!_TECHMAP_CONSTMSK_A_[i]) + tmp = {A[i], tmp[count_nonconst_bits()-1:1]}; + Y = |tmp; + end + end +endmodule |