Elide findWasmBinary in -sSINGLE_FILE mode. NFC

Author: sbc100

src/preamble.js

@@ -603,8 +603,13 @@ function instrumentWasmTableWithAbort() {
 }
 #endif
 
+#if SINGLE_FILE
+// In SINGLE_FILE mode the wasm binary is encoded inline here as a data: URL.
+var wasmBinaryFile ??= '{{{ WASM_BINARY_FILE }}}';
+#else
+var wasmBinaryFile;
 function findWasmBinary() {
-#if EXPORT_ES6 && USE_ES6_IMPORT_META && !SINGLE_FILE && !AUDIO_WORKLET
+#if EXPORT_ES6 && USE_ES6_IMPORT_META && !AUDIO_WORKLET
   if (Module['locateFile']) {
 #endif
     var f = '{{{ WASM_BINARY_FILE }}}';
@@ -614,7 +619,7 @@ function findWasmBinary() {
     }
 #endif
     return f;
-#if EXPORT_ES6 && USE_ES6_IMPORT_META && !SINGLE_FILE && !AUDIO_WORKLET // In single-file mode, repeating WASM_BINARY_FILE would emit the contents again. For an Audio Worklet, we cannot use `new URL()`.
+#if EXPORT_ES6 && USE_ES6_IMPORT_META && !AUDIO_WORKLET // In single-file mode, repeating WASM_BINARY_FILE would emit the contents again. For an Audio Worklet, we cannot use `new URL()`.
   }
 #if ENVIRONMENT_MAY_BE_SHELL
   if (ENVIRONMENT_IS_SHELL)
@@ -624,8 +629,9 @@ function findWasmBinary() {
   return new URL('{{{ WASM_BINARY_FILE }}}', import.meta.url).href;
 #endif
 }
+#endif
+
 
-var wasmBinaryFile;
 
 function getBinarySync(file) {
   if (file == wasmBinaryFile && wasmBinary) {
@@ -1079,7 +1085,9 @@ function getWasmImports() {
   }
 #endif
 
-  wasmBinaryFile ??= findWasmBinary();
+#if !SINGLE_FILE
+  wasmBinaryFile = findWasmBinary();
+#endif
 
 #if WASM_ASYNC_COMPILATION
 #if RUNTIME_DEBUG

test/other/codesize/test_codesize_cxx_ctors1.gzsize

@@ -1 +1 @@
-8542
+8540

test/other/codesize/test_codesize_cxx_ctors1.jssize

@@ -1 +1 @@
-20925
+20923

test/other/codesize/test_codesize_cxx_ctors2.gzsize

@@ -1 +1 @@
-8526
+8525

test/other/codesize/test_codesize_cxx_ctors2.jssize

@@ -1 +1 @@
-20893
+20891

test/other/codesize/test_codesize_cxx_except.gzsize

@@ -1 +1 @@
-9572
+9571

test/other/codesize/test_codesize_cxx_except.jssize

@@ -1 +1 @@
-24770
+24768

test/other/codesize/test_codesize_cxx_except_wasm.gzsize

@@ -1 +1 @@
-8503
+8502

test/other/codesize/test_codesize_cxx_except_wasm.jssize

@@ -1 +1 @@
-20819
+20817

test/other/codesize/test_codesize_cxx_except_wasm_exnref.gzsize

@@ -1 +1 @@
-8503
+8502