diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 2ccafe18338674f81957e45f4d03fbda0c6a2cbb..275d476343f2f9b6866719dbd2506ca2dc25763e 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,10 @@
 2010-11-03  Jakub Jelinek  <jakub@redhat.com>
 
+	PR debug/46252
+	* reload1.c (delete_dead_insn): Use prev_active_insn instead of
+	prev_real_insn.
+	* gcse.c (insert_insn_end_basic_block): Likewise.
+
 	PR rtl-optimization/46034
 	PR rtl-optimization/46212
 	PR rtl-optimization/46248
diff --git a/gcc/gcse.c b/gcc/gcse.c
index 39a5d223338ed8240c43d987e8af040a07893371..70f0fac0ed4ae94728dcce1031c1b09ccac1c8dc 100644
--- a/gcc/gcse.c
+++ b/gcc/gcse.c
@@ -3574,7 +3574,7 @@ insert_insn_end_basic_block (struct expr *expr, basic_block bb)
 	 the new instruction just before the tablejump.  */
       if (GET_CODE (PATTERN (insn)) == ADDR_VEC
 	  || GET_CODE (PATTERN (insn)) == ADDR_DIFF_VEC)
-	insn = prev_real_insn (insn);
+	insn = prev_active_insn (insn);
 
 #ifdef HAVE_cc0
       /* FIXME: 'twould be nice to call prev_cc0_setter here but it aborts
diff --git a/gcc/reload1.c b/gcc/reload1.c
index c8fd33a62a898fcd571d273e6a726bbfbc323f9a..7fd88c1f43a63194ccb84fc81b0a0e5137c7bbcb 100644
--- a/gcc/reload1.c
+++ b/gcc/reload1.c
@@ -2112,7 +2112,7 @@ spill_failure (rtx insn, enum reg_class rclass)
 static void
 delete_dead_insn (rtx insn)
 {
-  rtx prev = prev_real_insn (insn);
+  rtx prev = prev_active_insn (insn);
   rtx prev_dest;
 
   /* If the previous insn sets a register that dies in our insn, delete it
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 439dd5ccc51cfeb5942506a71264062667142c76..bb14d86f39694bfedae5c34c98296a44e795dbd8 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,5 +1,8 @@
 2010-11-03  Jakub Jelinek  <jakub@redhat.com>
 
+	PR debug/46252
+	* gcc.dg/pr46252.c: New test.
+
 	PR rtl-optimization/46034
 	PR rtl-optimization/46212
 	PR rtl-optimization/46248
diff --git a/gcc/testsuite/gcc.dg/pr46252.c b/gcc/testsuite/gcc.dg/pr46252.c
new file mode 100644
index 0000000000000000000000000000000000000000..70bf21d6c079b11104209ab04572a274bc04ed1d
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr46252.c
@@ -0,0 +1,15 @@
+/* PR debug/46252 */
+/* { dg-do compile } */
+/* { dg-options "-O -frerun-cse-after-loop -fno-tree-loop-optimize -funroll-loops -fcompare-debug" } */
+
+void
+foo (float *f)
+{
+  int i;
+  for (i = 0; i < 4; i++)
+    f[i] = i;
+  bar ();
+  for (i = 0; i < 4; i++)
+    if (f[i] != i)
+      __builtin_abort ();
+}