move bench script

src/bench/stream.sh

@@ -0,0 +1,20 @@
+#!/usr/bin/env bash
+#
+# This is a trivial helper script to help run the stream benchmark.
+# You probably want to tweak this script depending on what you're
+# trying to measure.
+
+DATA="ascii"
+SIZE="25M"
+
+# Uncomment to test with an active terminal state.
+#ARGS=" --terminal"
+
+hyperfine \
+  --warmup 10 \
+  -n memcpy \
+  "./zig-out/bin/bench-stream --mode=gen-${DATA} | head -c ${SIZE} | ./zig-out/bin/bench-stream --mode=noop${ARGS}" \
+  -n scalar \
+  "./zig-out/bin/bench-stream --mode=gen-${DATA} | head -c ${SIZE} | ./zig-out/bin/bench-stream --mode=scalar${ARGS}" \
+  -n simd \
+  "./zig-out/bin/bench-stream --mode=gen-${DATA} | head -c ${SIZE} | ./zig-out/bin/bench-stream --mode=simd${ARGS}"