benches: add a simple microbenches for nit try/catch

Signed-off-by: Jean Privat <jean@pryen.org>

diff --git a/benchmarks/microbenches/catches.nit b/benchmarks/microbenches/catches.nit
new file mode 100644 (file)
index 0000000..b866f6f
--- /dev/null
+++ b/benchmarks/microbenches/catches.nit
@@ -0,0 +1,70 @@
+# This file is part of NIT ( http://www.nitlanguage.org ).
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# This program micro-benches do/catches
+# arg1 is the mode, arg2 is the depth
+
+# mode 0, no catch, only calls
+fun sub0(n: Int)
+do
+       if n < 0 then return
+       do
+               sub0(n-1)
+               sub0(n-1)
+       end
+end
+
+# mode 1, unused catches
+fun sub1(n: Int)
+do
+       if n < 0 then return
+       do
+               sub1(n-1)
+               sub1(n-1)
+       catch
+               print "dead code"
+       end
+end
+
+# mode 2, many nested catches and aborts
+fun sub2(n: Int)
+do
+       if n < 0 then abort
+       do
+               sub2(n-1)
+               sub2(n-1)
+       catch
+               if n > 0 then print "dead code"
+       end
+end
+
+
+var m = 1
+if args.length > 0 then m = args[0].to_i
+
+var n = 25
+if args.length > 1 then n = args[1].to_i
+
+if m == 0 then
+       print "mode {m} (no catch, no abort), size n={n}"
+       sub0(n)
+else if m == 1 then
+       print "mode {m} (catch, no abort), size n={n}"
+       sub1(n)
+else if m == 2 then
+       print "mode {m} (catch, abort), size n={n}"
+       sub2(n)
+else
+       abort
+end