Merge pull request #7 from YosysHQ/master

Syncing with official repo

3 files changed, 55 insertions, 0 deletions

diff --git a/examples/python-api/.gitignore b/examples/python-api/.gitignore
new file mode 100644
index 000000000..758de1134
--- /dev/null
+++ b/examples/python-api/.gitignore
@@ -0,0 +1 @@
+out/**
diff --git a/examples/python-api/pass.py b/examples/python-api/pass.py
new file mode 100755
index 000000000..d67cf4a23
--- /dev/null
+++ b/examples/python-api/pass.py
@@ -0,0 +1,32 @@
+#!/usr/bin/python3
+
+from pyosys import libyosys as ys
+
+import matplotlib.pyplot as plt
+import numpy as np
+
+class CellStatsPass(ys.Pass):
+
+    def __init__(self):
+        super().__init__("cell_stats", "Shows cell stats as plot")
+
+    def py_help(self):
+        ys.log("This pass uses the matplotlib library to display cell stats\n")
+
+    def py_execute(self, args, design):
+        ys.log_header(design, "Plotting cell stats\n")
+        cell_stats = {}
+        for module in design.selected_whole_modules_warn():
+            for cell in module.selected_cells():
+                if cell.type.str() in cell_stats:
+                    cell_stats[cell.type.str()] += 1
+                else:
+                    cell_stats[cell.type.str()] = 1
+        plt.bar(range(len(cell_stats)), height = list(cell_stats.values()),align='center')
+        plt.xticks(range(len(cell_stats)), list(cell_stats.keys()))
+        plt.show()
+
+    def py_clear_flags(self):
+        ys.log("Clear Flags - CellStatsPass\n")
+
+p = CellStatsPass()
diff --git a/examples/python-api/script.py b/examples/python-api/script.py
new file mode 100755
index 000000000..f0fa5a0b8
--- /dev/null
+++ b/examples/python-api/script.py
@@ -0,0 +1,22 @@
+#!/usr/bin/python3
+
+from pyosys import libyosys as ys
+
+import matplotlib.pyplot as plt
+import numpy as np
+
+design = ys.Design()
+ys.run_pass("read_verilog ../../tests/simple/fiedler-cooley.v", design);
+ys.run_pass("prep", design)
+ys.run_pass("opt -full", design)
+
+cell_stats = {}
+for module in design.selected_whole_modules_warn():
+  for cell in module.selected_cells():
+    if cell.type.str() in cell_stats:
+      cell_stats[cell.type.str()] += 1
+    else:
+      cell_stats[cell.type.str()] = 1
+plt.bar(range(len(cell_stats)), height = list(cell_stats.values()),align='center')
+plt.xticks(range(len(cell_stats)), list(cell_stats.keys()))
+plt.show()