- add log for optimizeEmptyBlock

whtoo · Dec 18, 2023 · 336925e · 336925e
1 parent 61a0640
commit 336925e
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/ep20/src/main/java/org/teachfx/antlr4/ep20/ir/Prog.java b/ep20/src/main/java/org/teachfx/antlr4/ep20/ir/Prog.java
@@ -37,16 +37,19 @@ private void optimizeEmptyBlock(@NotNull LinearIRBlock linearIRBlock) {
         if (linearIRBlock.getStmts().isEmpty()){
             // Drop empty block
             if (linearIRBlock.getSuccessors().isEmpty()) {
+                logger.debug("Block %s will be removed".formatted(linearIRBlock));
                 needRemovedBlocks.add(linearIRBlock);
                 return;
             }
             // Auto-fill next block for jmp/cjmp
             var nextBlock = linearIRBlock.getSuccessors().get(0);
             for (var ref : linearIRBlock.getJmpRefMap()){
                 if (ref instanceof JMP jmp) {
+                    logger.debug(" %s is next for %s".formatted(nextBlock,linearIRBlock));
                     jmp.setNext(nextBlock);
 
                 } else if (ref instanceof CJMP cjmp) {
+                    logger.debug(" %s is else-case for %s".formatted(nextBlock,linearIRBlock));
                     cjmp.setElseBlock(nextBlock);
                 }
             }