Merge branch 'master' of https://github.com/cliffordwolf/yosys into btor

added case for memwr cell that is used in muxes (same cell is used more than one time)
corrected bug for xnor and logic_not
added pmux cell translation

Conflicts:
	backends/btor/btor.cc

1 files changed, 91 insertions, 0 deletions

diff --git a/tests/realmath/generate.py b/tests/realmath/generate.py
new file mode 100644
index 000000000..972021dc8
--- /dev/null
+++ b/tests/realmath/generate.py
@@ -0,0 +1,91 @@
+#!/usr/bin/python
+
+from __future__ import division
+from __future__ import print_function
+
+import sys
+import random
+from contextlib import contextmanager
+
+@contextmanager
+def redirect_stdout(new_target):
+    old_target, sys.stdout = sys.stdout, new_target
+    try:
+        yield new_target
+    finally:
+        sys.stdout = old_target
+
+def random_expression(depth = 3, maxparam = 0):
+    def recursion():
+        return random_expression(depth = depth-1, maxparam = maxparam)
+    if depth == 0:
+        if maxparam != 0 and random.randint(0, 1) != 0:
+            return 'p%02d' % random.randint(0, maxparam-1)
+        return random.choice([ '%e', '%f', '%g' ]) % random.uniform(-2, +2)
+    if random.randint(0, 4) == 0:
+        return recursion() + random.choice([ ' < ', ' <= ', ' == ', ' != ', ' >= ', ' > ' ]) + recursion() + ' ? ' + recursion() + ' : ' + recursion()
+    op_prefix = [ '+(', '-(' ]
+    op_infix = [ ' + ', ' - ', ' * ', ' / ' ]
+    op_func1 = [ '$ln', '$log10', '$exp', '$sqrt', '$floor', '$ceil', '$sin', '$cos', '$tan', '$asin', '$acos', '$atan', '$sinh', '$cosh', '$tanh', '$asinh', '$acosh', '$atanh' ]
+    op_func2 = [ '$pow', '$atan2', '$hypot' ]
+    op = random.choice(op_prefix + op_infix + op_func1 + op_func2)
+    if op in op_prefix:
+        return op + recursion() + ')'
+    if op in op_infix:
+        return '(' + recursion() + op + recursion() + ')'
+    if op in op_func1:
+        return op + '(' + recursion() + ')'
+    if op in op_func2:
+        return op + '(' + recursion() + ', ' + recursion() + ')'
+    raise
+
+for idx in range(100): 
+    with file('temp/uut_%05d.v' % idx, 'w') as f, redirect_stdout(f):
+        print('module uut_%05d(output [63:0] %s);\n' % (idx, ', '.join(['y%02d' % i for i in range(100)])))
+        for i in range(30):
+            if idx < 10:
+                print('localparam p%02d = %s;' % (i, random_expression()))
+            else:
+                print('localparam%s p%02d = %s;' % (random.choice(['', ' real', ' integer']), i, random_expression()))
+        for i in range(30, 60):
+            if idx < 10:
+                print('localparam p%02d = %s;' % (i, random_expression(maxparam = 30)))
+            else:
+                print('localparam%s p%02d = %s;' % (random.choice(['', ' real', ' integer']), i, random_expression(maxparam = 30)))
+        for i in range(100):
+            print('assign y%02d = 65536 * (%s);' % (i, random_expression(maxparam = 60)))
+        print('endmodule')
+    with file('temp/uut_%05d.ys' % idx, 'w') as f, redirect_stdout(f):
+        print('read_verilog uut_%05d.v' % idx)
+        print('rename uut_%05d uut_%05d_syn' % (idx, idx))
+        print('write_verilog uut_%05d_syn.v' % idx)
+    with file('temp/uut_%05d_tb.v' % idx, 'w') as f, redirect_stdout(f):
+        print('module uut_%05d_tb;\n' % idx)
+        print('wire [63:0] %s;' % (', '.join(['r%02d' % i for i in range(100)])))
+        print('wire [63:0] %s;' % (', '.join(['s%02d' % i for i in range(100)])))
+        print('uut_%05d ref(%s);' % (idx, ', '.join(['r%02d' % i for i in range(100)])))
+        print('uut_%05d_syn syn(%s);' % (idx, ', '.join(['s%02d' % i for i in range(100)])))
+        print('task compare_ref_syn;')
+        print('  input [7:0] i;')
+        print('  input [63:0] r, s;')
+        print('  reg [64*8-1:0] buffer;')
+        print('  integer j;')
+        print('  begin')
+        print('    if (-1 <= $signed(r-s) && $signed(r-s) <= +1) begin')
+        print('      // $display("%d: %b %b", i, r, s);')
+        print('    end else if (r === s) begin ')
+        print('      // $display("%d: %b %b", i, r, s);')
+        print('    end else begin ')
+        print('      for (j = 0; j < 64; j = j+1)')
+        print('        buffer[j*8 +: 8] = r[j] !== s[j] ? "^" : " ";')
+        print('      $display("\\n%3d: %b %b", i, r, s);')
+        print('      $display("     %s %s", buffer, buffer);')
+        print('    end')
+        print('  end')
+        print('endtask')
+        print('initial begin #1;')
+        for i in range(100):
+            print('  compare_ref_syn(%2d, r%02d, s%02d);' % (i, i, i))
+        print('end')
+        print('endmodule')
+