src/java.base/share/classes/java/lang/invoke/InvokerBytecodeGenerator.java

rev 11011 : 8063137: Never-taken branches should be pruned when GWT LambdaForms are shared
Reviewed-by: ?

*** 626,643 ****
          mv.visitAnnotation("Ljava/lang/invoke/LambdaForm$Hidden;", true);
  
          // Mark this method as a compiled LambdaForm
          mv.visitAnnotation("Ljava/lang/invoke/LambdaForm$Compiled;", true);
  
          if (lambdaForm.forceInline) {
              // Force inlining of this invoker method.
              mv.visitAnnotation("Ljava/lang/invoke/ForceInline;", true);
          } else {
              mv.visitAnnotation("Ljava/lang/invoke/DontInline;", true);
          }
  
- 
          // iterate over the form's names, generating bytecode instructions for each
          // start iterating at the first name following the arguments
          Name onStack = null;
          for (int i = lambdaForm.arity; i < lambdaForm.names.length; i++) {
              Name name = lambdaForm.names[i];
--- 626,646 ----
          mv.visitAnnotation("Ljava/lang/invoke/LambdaForm$Hidden;", true);
  
          // Mark this method as a compiled LambdaForm
          mv.visitAnnotation("Ljava/lang/invoke/LambdaForm$Compiled;", true);
  
+         if (PROFILE_GWT && lambdaForm.isGWT) {
+             mv.visitAnnotation("Ljava/lang/invoke/LambdaForm$IgnoreProfile;", true);
+         }
+ 
          if (lambdaForm.forceInline) {
              // Force inlining of this invoker method.
              mv.visitAnnotation("Ljava/lang/invoke/ForceInline;", true);
          } else {
              mv.visitAnnotation("Ljava/lang/invoke/DontInline;", true);
          }
  
          // iterate over the form's names, generating bytecode instructions for each
          // start iterating at the first name following the arguments
          Name onStack = null;
          for (int i = lambdaForm.arity; i < lambdaForm.names.length; i++) {
              Name name = lambdaForm.names[i];
*** 1003,1012 ****
--- 1006,1020 ----
          Label L_done     = new Label();
  
          // load test result
          emitPushArgument(selectAlternativeName, 0);
  
+         if (PROFILE_GWT) {
+             emitPushArgument(selectAlternativeName, 3);
+             mv.visitMethodInsn(Opcodes.INVOKESTATIC, MHI, "profileBranch", "(Z[I)Z", false);
+         }
+ 
          // if_icmpne L_fallback
          mv.visitJumpInsn(Opcodes.IFEQ, L_fallback);
  
          // invoke selectAlternativeName.arguments[1]
          Class<?>[] preForkClasses = localClasses.clone();