fix: remove unused tmp local in array literal generated code (#2917)

Author: HerrCai0907

src/compiler.ts

@@ -8189,11 +8189,9 @@ export class Compiler extends DiagnosticEmitter{
 letarrayInstance=<Class>element;
 letarrayType=arrayInstance.type;
 letelementType=arrayInstance.getTypeArgumentsTo(program.arrayPrototype)![0];
-letarrayBufferInstance=assert(program.arrayBufferInstance);
 
 // block those here so compiling expressions doesn't conflict
 lettempThis=flow.getTempLocal(this.options.usizeType);
-lettempDataStart=flow.getTempLocal(arrayBufferInstance.type);
 
 // compile value expressions and find out whether all are constant
 letexpressions=expression.elementExpressions;
@@ -8269,16 +8267,6 @@ export class Compiler extends DiagnosticEmitter{
 letdataStartProperty=(<PropertyPrototype>dataStartMember).instance;
 if(!dataStartProperty)returnmodule.unreachable();
 assert(dataStartProperty.isField&&dataStartProperty.memoryOffset>=0);
-stmts.push(
-module.local_set(tempDataStart.index,
-module.load(arrayType.byteSize,false,
-module.local_get(tempThis.index,arrayTypeRef),
-arrayTypeRef,
-dataStartProperty.memoryOffset
-),
-true// ArrayBuffer
-)
-);
 for(leti=0;i<length;++i){
 // this[i] = value
 stmts.push(

tests/compiler/bindings/noExportRuntime.debug.wat

@@ -2361,8 +2361,6 @@
  (func$start:bindings/noExportRuntime
  (local$0i32)
  (local$1i32)
- (local$2i32)
- (local$3i32)
 memory.size
 i32.const16
 i32.shl