re PR debug/46756 (-fcompare-debug failure (length) with ASSIGN)

gcc/ChangeLog:
PR debug/46576
* jump.c (mark_all_labels): Skip debug insns.
gcc/testsuite/ChangeLog:
PR debug/46576
* gfortran.dg/debug/pr46576.f: New.

From-SVN: r167738

gcc/ChangeLog

 2010-12-13  Alexandre Oliva  <aoliva@redhat.com>
 
+	PR debug/46576
+	* jump.c (mark_all_labels): Skip debug insns.
+
+2010-12-13  Alexandre Oliva  <aoliva@redhat.com>
+
 	PR debug/46782
 	* cfgcleanup.c (try_forward_edges): Skip debug insns.
 

gcc/jump.c

@@ -193,7 +193,7 @@ mark_all_labels (rtx f)
   rtx prev_nonjump_insn = NULL;
 
   for (insn = f; insn; insn = NEXT_INSN (insn))
-    if (INSN_P (insn))
+    if (NONDEBUG_INSN_P (insn))
       {
 	mark_jump_label (PATTERN (insn), insn, 0);
 

gcc/testsuite/ChangeLog

 2010-12-13  Alexandre Oliva  <aoliva@redhat.com>
 
+	PR debug/46576
+	* gfortran.dg/debug/pr46576.f: New.
+
+2010-12-13  Alexandre Oliva  <aoliva@redhat.com>
+
 	PR debug/46782
 	* gcc.dg/debug/pr46782.c: New.
 

gcc/testsuite/gfortran.dg/debug/pr46576.f

+C PR debug/46576, reduced from ../20010519-1.f
+C { dg-do compile }
+C { dg-options "-O -fcompare-debug" }
+      LOGICAL QDISK,QDW,QCMPCT
+      LOGICAL LNOMA,LRAISE,LSCI,LBIG
+      ASSIGN 801 TO I800 ! { dg-warning "Deleted feature: ASSIGN" "Deleted feature: ASSIGN" }
+      GOTO 800
+ 801  CONTINUE
+      ASSIGN 761 TO I760 ! { dg-warning "Deleted feature: ASSIGN" "Deleted feature: ASSIGN" }
+ 761  CONTINUE
+      IF(LSCI) THEN
+         DO I=1,LENCM
+         ENDDO
+      ENDIF
+      DO WHILE((CVGMX.GT.TOLDIM).AND.(ITER.LT.ITMX))
+         IF(.NOT.QDW) THEN
+            ASSIGN 641 to I640 ! { dg-warning "Deleted feature: ASSIGN" "Deleted feature: ASSIGN" }
+            GOTO 640
+ 641        CONTINUE
+         ENDIF
+      ENDDO
+      GOTO 700
+ 640  CONTINUE
+      GOTO I640 ! { dg-warning "Deleted feature: Assigned" "Assigned GO TO" }
+ 700  CONTINUE
+      GOTO I760 ! { dg-warning "Deleted feature: Assigned" "Assigned GO TO" }
+ 800  CONTINUE
+      GOTO I800 ! { dg-warning "Deleted feature: Assigned" "Assigned GO TO" }
+      END