Add fast handlers

fast_call.wat

@@ -0,0 +1,10 @@
+(module
+  (import "wizeng" "puti" (func $puti (param i32)))
+  (func $f (result i32)
+	i32.const 10)
+  (func (export "main") (result i32)
+        call $f
+	call $puti
+	i32.const 0
+  )
+)

fast_call2.wat

@@ -0,0 +1,7 @@
+(module
+  (func $f (result i32)
+	i32.const 10)
+  (func (export "main") (result i32)
+        call $f
+  )
+)

fast_call_export.wat

@@ -0,0 +1,10 @@
+;; export name holds fast information, we don't modify binary ahead of time
+
+(module
+  (func $fast (export "fast:foo") (result i32)
+    (i32.const 2)
+  )
+  (func (export "main") (result i32)
+    (call $fast)
+  )
+)

fast_call_nop.wat

@@ -0,0 +1,10 @@
+(module
+  (func $f)
+  (func $g)
+  (func (export "main") (result i32)
+  	i64.const 11
+	drop
+        call $g
+	i32.const 0
+  )
+)

fast_call_param.wat

@@ -0,0 +1,18 @@
+(module
+  (import "wizeng" "puti" (func $puti (param i32)))
+  (func $f (param i32) (result i32)
+    local.get 0
+    if (result i32)
+      i32.const 999
+    else
+      i32.const -216
+    end
+  )
+  (func (export "main") (result i32)
+        (call $f (i32.const 1))
+	call $puti
+        (call $f (i32.const 0))
+	call $puti
+	i32.const 0
+  )
+)

int/Export

@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+S=${BASH_SOURCE[0]}
+while [ -h "$S" ]; do
+  DIR=$(cd -P $(dirname "$S") >/dev/null 2>&1 && pwd)
+  S=$(readlink "$S")
+  [[ $S != /* ]] && S=$DIR/$S
+done
+DIR=$(cd -P $(dirname "$S") >/dev/null 2>&1 && pwd)
+wizeng $DIR/Export.wasm "$@"

int/Export.v3

@@ -0,0 +1,12 @@
+export "fast:foo" def foo(x: int, y: int) -> int {
+	var val = y;
+	for (i < x) {
+		val += i * y;
+	}
+	return val;
+}
+
+export "main" def main() -> int {
+	System.puts(Strings.format1("%d\n", foo(11, 2)));
+	return 0;
+}

int/Interpreter

@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+S=${BASH_SOURCE[0]}
+while [ -h "$S" ]; do
+  DIR=$(cd -P $(dirname "$S") >/dev/null 2>&1 && pwd)
+  S=$(readlink "$S")
+  [[ $S != /* ]] && S=$DIR/$S
+done
+DIR=$(cd -P $(dirname "$S") >/dev/null 2>&1 && pwd)
+wizeng $DIR/Interpreter.wasm "$@"