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convert the GOTO in a switch into "br"

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Volker Berlin 2018-05-08 22:20:33 +02:00
parent b06b368574
commit 3fa6f5670e
1 changed files with 24 additions and 12 deletions
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36
src/de/inetsoftware/jwebassembly/module/BranchManger.java
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@ -240,28 +240,40 @@ class BranchManger {
}
lastPosition = currentPosition;
blockCount++;
BranchNode node = new BranchNode( startPosition, startPosition + currentPosition, WasmBlockOperator.BLOCK, WasmBlockOperator.END );
BranchNode node = new BranchNode( startPosition, currentPosition, WasmBlockOperator.BLOCK, WasmBlockOperator.END );
node.add( blockNode );
blockNode = node;
}
}
// handle the GOTO at the end of the CASE blocks.
int endPosition = startPosition + lastPosition;
for( int i = 0; i < parsedOperations.size(); i++ ) {
ParsedBlock parsedBlock = parsedOperations.get( i );
if( parsedBlock.startPosition < endPosition ) {
if( parsedBlock.endPosition >= endPosition && parsedBlock.op == JavaBlockOperator.GOTO ) {
parsedOperations.remove( i );
endPosition = parsedBlock.endPosition;
// handle the GOTO (breaks) at the end of the CASE blocks.
blockCount = 0;
BranchNode branch = blockNode;
while( branch.size() > 0 ) {
BranchNode node = branch.get( 0 );
blockCount++;
for( int p = 0; p < parsedOperations.size(); p++ ) {
ParsedBlock parsedBlock = parsedOperations.get( p );
if( parsedBlock.startPosition < node.endPos ) {
continue;
}
if( parsedBlock.startPosition < lastPosition ) {
if( parsedBlock.endPosition >= lastPosition && parsedBlock.op == JavaBlockOperator.GOTO ) {
parsedOperations.remove( p );
lastPosition = parsedBlock.endPosition;
branch.add( new BranchNode( parsedBlock.startPosition, parsedBlock.startPosition, WasmBlockOperator.BR, null, blockCount ) );
p--;
}
} else {
break;
}
} else {
break;
}
branch = node;
}
// Create the main block around the switch
BranchNode switchNode = new BranchNode( startPosition, endPosition, WasmBlockOperator.BLOCK, WasmBlockOperator.END );
BranchNode switchNode = new BranchNode( startPosition, lastPosition , WasmBlockOperator.BLOCK, WasmBlockOperator.END );
switchNode.add( blockNode );
parent.add( switchNode );