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improve NonGC polyfill

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This commit is contained in:
Volker Berlin 2019-09-14 15:22:25 +02:00
parent 9293bfa9f2
commit c8e8c09a8e
3 changed files with 17 additions and 4 deletions
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15
src/de/inetsoftware/jwebassembly/module/WasmCallIndirectInstruction.java
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@ -20,10 +20,13 @@ import java.io.IOException;
import javax.annotation.Nonnull;
import de.inetsoftware.jwebassembly.javascript.JavaScriptSyntheticFunctionName;
import de.inetsoftware.jwebassembly.module.TypeManager.StructType;
import de.inetsoftware.jwebassembly.wasm.NamedStorageType;
import de.inetsoftware.jwebassembly.wasm.StructOperator;
import de.inetsoftware.jwebassembly.wasm.ValueType;
import de.inetsoftware.jwebassembly.wasm.VariableOperator;
import de.inetsoftware.jwebassembly.wasm.WasmOptions;
/**
* WasmInstruction for a function call.
@ -44,6 +47,8 @@ class WasmCallIndirectInstruction extends WasmCallInstruction {
private final LocaleVariableManager localVariables;
private final WasmOptions options;
/**
* Create an instance of a function call instruction
*
@ -59,11 +64,12 @@ class WasmCallIndirectInstruction extends WasmCallInstruction {
* @param types
* the type manager
*/
WasmCallIndirectInstruction( FunctionName name, LocaleVariableManager localVariables, int javaCodePos, int lineNumber, TypeManager types ) {
WasmCallIndirectInstruction( FunctionName name, LocaleVariableManager localVariables, int javaCodePos, int lineNumber, TypeManager types, WasmOptions options ) {
super( name, javaCodePos, lineNumber, types );
this.type = types.valueOf( name.className );
this.tempVar = localVariables.getTempVariable( type, javaCodePos, javaCodePos + 1 );
this.localVariables = localVariables;
this.options = options;
}
/**
@ -97,7 +103,12 @@ class WasmCallIndirectInstruction extends WasmCallInstruction {
writer.writeLocal( VariableOperator.tee, tempVarIdx );
writer.writeLocal( VariableOperator.get, tempVarIdx );
writer.writeStructOperator( StructOperator.GET, type, new NamedStorageType( type, "", "vtable" ), 0 ); // vtable is ever on position 0
if( options.useGC() ) {
writer.writeStructOperator( StructOperator.GET, type, new NamedStorageType( type, "", "vtable" ), 0 ); // vtable is ever on position 0
} else {
writer.writeConst( 0, ValueType.i32 ); // vtable is ever on position 0
writer.writeFunctionCall( new JavaScriptSyntheticFunctionName( "NonGC", "get_i32", () -> "(a,i) => a[i]", ValueType.anyref, ValueType.i32, null, ValueType.i32 ) );
}
writer.writeLoadI32( virtualFunctionIdx * 4 );
writer.writeVirtualFunctionCall( getFunctionName(), type );
}

2
src/de/inetsoftware/jwebassembly/module/WasmCodeBuilder.java
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@ -306,7 +306,7 @@ public abstract class WasmCodeBuilder {
* the line number in the Java source code
*/
protected void addCallVirtualInstruction( FunctionName name, int javaCodePos, int lineNumber ) {
instructions.add( new WasmCallIndirectInstruction( name, localVariables, javaCodePos, lineNumber, types ) );
instructions.add( new WasmCallIndirectInstruction( name, localVariables, javaCodePos, lineNumber, types, options ) );
}
/**

4
src/de/inetsoftware/jwebassembly/module/WasmStructInstruction.java
View File

@ -157,7 +157,9 @@ class WasmStructInstruction extends WasmInstruction {
}
}
if( functionName != null ) { // nonGC
//TODO idx
if( fieldName != null ) {
writer.writeConst( idx, ValueType.i32 );
}
writer.writeFunctionCall( functionName );
} else {
writer.writeStructOperator( op, type, fieldName, idx );