Add initial shaping performance test and profiler
diff --git a/perf/run.sh b/perf/run.sh
new file mode 100755
index 0000000..14a0b88
--- /dev/null
+++ b/perf/run.sh
@@ -0,0 +1,25 @@
+#!/bin/bash
+CXX=clang++
+FONT=fonts/NotoNastaliqUrdu-Regular.ttf
+TEXT=text/test-long-arabic-paragraph.txt
+
+$CXX ../util/hb-shape.cc ../util/options.cc ../src/harfbuzz.cc \
+ -lm -fno-rtti -fno-exceptions -fno-omit-frame-pointer -DHB_NO_MT \
+ -I../src $FLAGS $SOURCES \
+ -DPACKAGE_NAME='""' -DPACKAGE_VERSION='""' \
+ -DHAVE_GLIB $(pkg-config --cflags --libs glib-2.0) \
+ -o hb-shape -g -O2 # -O3 \
+ #-march=native -mtune=native \
+ #-Rpass=loop-vectorize -Rpass-missed=loop-vectorize \
+ #-Rpass-analysis=loop-vectorize -fsave-optimization-record
+
+# -march=native: enable all vector instructions current CPU can offer
+# -Rpass*: https://llvm.org/docs/Vectorizers.html#diagnostics
+
+#sudo rm capture.syscap > /dev/null
+#sysprof-cli -c "./a.out $@"
+#sysprof capture.syscap
+
+perf stat ./hb-shape -o /dev/null $FONT --text-file $TEXT --num-iterations=100 --font-funcs=ot
+#perf record -g ./hb-shape -O '' -o /dev/null $FONT --text-file $TEXT --num-iterations=100 --font-funcs=ot
+#perf report -g
