Move last remaining code in runtime.js into parseTools.js. NFC (#19338)

This file only had one remaining function and contained inaccurate
information at the top.

Author: sbc100

src/compiler.js

@@ -94,7 +94,6 @@ if (VERBOSE) {
 load('modules.js');
 load('parseTools.js');
 load('jsifier.js');
-load('runtime.js');
 if (!STRICT) {
   load('parseTools_legacy.js');
 }

src/parseTools.js

@@ -170,7 +170,8 @@ function needsQuoting(ident) {
   return true;
 }
 
-const POINTER_SIZE = MEMORY64 ? 8 : 4;
+global.POINTER_SIZE = MEMORY64 ? 8 : 4;
+global.STACK_ALIGN = 16;
 const POINTER_BITS = POINTER_SIZE * 8;
 const POINTER_TYPE = 'u' + POINTER_BITS;
 const POINTER_JS_TYPE = MEMORY64 ? "'bigint'" : "'number'";
@@ -258,6 +259,28 @@ function indentify(text, indent) {
 
 // Correction tools
 
+function getNativeTypeSize(type) {
+  switch (type) {
+    case 'i1': case 'i8': case 'u8': return 1;
+    case 'i16': case 'u16': return 2;
+    case 'i32': case 'u32': return 4;
+    case 'i64': case 'u64': return 8;
+    case 'float': return 4;
+    case 'double': return 8;
+    default: {
+      if (type[type.length - 1] === '*') {
+        return POINTER_SIZE;
+      }
+      if (type[0] === 'i') {
+        const bits = Number(type.substr(1));
+        assert(bits % 8 === 0, 'getNativeTypeSize invalid bits ' + bits + ', type ' + type);
+        return bits / 8;
+      }
+      return 0;
+    }
+  }
+}
+
 function getHeapOffset(offset, type) {
   if (type == 'i64' && !WASM_BIGINT) {
     // We are foreced to use the 32-bit heap for 64-bit values when we don't