PR rtl-optimization/51014

	* loop-unroll.c (apply_opt_in_copies): Ignore label DEBUG_INSNs
	both from bb and orig_bb.

	* g++.dg/opt/pr51014.C: New test.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@181883 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 1020e90..6a9c965 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2011-12-01  Jakub Jelinek  <jakub@redhat.com>
+
+       PR rtl-optimization/51014
+       * loop-unroll.c (apply_opt_in_copies): Ignore label DEBUG_INSNs
+       both from bb and orig_bb.
+
 2011-12-01  Joern Rennecke  <joern.rennecke@embecosm.com>
 
        PR tree-optimization/50802

diff --git a/gcc/loop-unroll.c b/gcc/loop-unroll.c
index 6deff41..378b933 100644 (file)
--- a/gcc/loop-unroll.c
+++ b/gcc/loop-unroll.c
@@ -1,5 +1,5 @@
 /* Loop unrolling and peeling.
-   Copyright (C) 2002, 2003, 2004, 2005, 2007, 2008, 2010
+   Copyright (C) 2002, 2003, 2004, 2005, 2007, 2008, 2010, 2011
    Free Software Foundation, Inc.
 
 This file is part of GCC.
@@ -2262,10 +2262,15 @@ apply_opt_in_copies (struct opt_info *opt_info,
       for (insn = BB_HEAD (bb); insn != NEXT_INSN (BB_END (bb)); insn = next)
         {
           next = NEXT_INSN (insn);
-          if (!INSN_P (insn))
+         if (!INSN_P (insn)
+             || (DEBUG_INSN_P (insn)
+                 && TREE_CODE (INSN_VAR_LOCATION_DECL (insn)) == LABEL_DECL))
             continue;
 
-          while (!INSN_P (orig_insn))
+         while (!INSN_P (orig_insn)
+                || (DEBUG_INSN_P (orig_insn)
+                    && (TREE_CODE (INSN_VAR_LOCATION_DECL (orig_insn))
+                        == LABEL_DECL)))
             orig_insn = NEXT_INSN (orig_insn);
 
           ivts_templ.insn = orig_insn;

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index db9afc1..acd23f9 100644 (file)
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2011-12-01  Jakub Jelinek  <jakub@redhat.com>
+
+       PR rtl-optimization/51014
+       * g++.dg/opt/pr51014.C: New test.
+
 2011-12-01  Paolo Carlini  <paolo.carlini@oracle.com>
 
        PR c++/51367

diff --git a/gcc/testsuite/g++.dg/opt/pr51014.C b/gcc/testsuite/g++.dg/opt/pr51014.C
new file mode 100644 (file)
index 0000000..1e5bb9f
--- /dev/null
+++ b/gcc/testsuite/g++.dg/opt/pr51014.C
@@ -0,0 +1,16 @@
+// PR rtl-optimization/51014
+// { dg-do compile }
+// { dg-options "-O2 -funroll-loops -fcompare-debug" }
+
+struct S
+{
+  ~S() { delete s; }
+  int *s;
+};
+
+void
+f (S *x, S *y)
+{
+  for (; x != y; ++x)
+    x->~S();
+}