re PR debug/47881 (-fcompare-debug failure (length) with -O -fno-dce -funroll-loops...

	PR debug/47881
	* ira.c (ira): Call df_analyze again if delete_trivially_dead_insns
	removed anything.

	* gcc.dg/pr47881.c: New test.

From-SVN: r170780

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index ece9ec1638ecada4e4fc7727329dd44abfe3f2af..5e14896efa0950ce0be191085eea649ad7e81892 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,9 @@
 2011-03-08  Jakub Jelinek  <jakub@redhat.com>
 
+       PR debug/47881
+       * ira.c (ira): Call df_analyze again if delete_trivially_dead_insns
+       removed anything.
+
        PR tree-optimization/48022
        * fold-const.c (fold_comparison): Don't call fold_overflow_warning
        for EQ/NE_EXPR.

diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index df362b2953822c31b1e3d62f4b14759a1a990d2a..883175a8e33ff7ba49be7ae16b2024b90232b9e0 100644 (file)
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,5 +1,6 @@
 2011-03-08  Dodji Seketeli  <dodji@redhat.com>
 
+       PR c++/47957
        * name-lookup.c (binding_to_template_parms_of_scope_p): Only
        consider scopes of primary template definitions.  Adjust comments.
 

diff --git a/gcc/ira.c b/gcc/ira.c
index 68d47fbb2d5616d4e869ac403363664c4ec6e6af..f2b871f0251a407b4b346e17f550fa8ee092cec3 100644 (file)
--- a/gcc/ira.c
+++ b/gcc/ira.c
@@ -1,5 +1,5 @@
 /* Integrated Register Allocator (IRA) entry point.
-   Copyright (C) 2006, 2007, 2008, 2009, 2010
+   Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011
    Free Software Foundation, Inc.
    Contributed by Vladimir Makarov <vmakarov@redhat.com>.
 
@@ -3232,7 +3232,8 @@ ira (FILE *f)
     check_allocation ();
 #endif
 
-  delete_trivially_dead_insns (get_insns (), max_reg_num ());
+  if (delete_trivially_dead_insns (get_insns (), max_reg_num ()))
+    df_analyze ();
 
   init_reg_equiv_memory_loc ();
 

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index a2ed5fd398f315deb579c70265ca44e7e87bd095..d9297febc4f6ada0153d5d3c63c6a22165c476e2 100644 (file)
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,5 +1,11 @@
+2011-03-08  Jakub Jelinek  <jakub@redhat.com>
+
+       PR debug/47881
+       * gcc.dg/pr47881.c: New test.
+
 2011-03-08  Dodji Seketeli  <dodji@redhat.com>
 
+       PR c++/47957
        * g++.dg/lookup/template3.C: New test.
 
 2011-03-08  Kai Tietz  <ktietz@redhat.com>

diff --git a/gcc/testsuite/gcc.dg/pr47881.c b/gcc/testsuite/gcc.dg/pr47881.c
new file mode 100644 (file)
index 0000000..ee17073
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr47881.c
@@ -0,0 +1,24 @@
+/* PR debug/47881 */
+/* { dg-do compile } */
+/* { dg-options "-O -fcompare-debug -fno-dce -funroll-loops -fno-web" } */
+
+extern int data[];
+
+int
+foo (int *t, int *f, int n)
+{
+  int i = 0, a, b, c, d;
+  while (data[*f] && n)
+    n--;
+  for (; i < n; i += 4)
+    {
+      a = data[*(f++) & 0x7f];
+      c = data[*(f++) & 0x7f];
+      c = data[*(f++) & 0x7f];
+      d = data[*(f++) & 0x7f];
+      if ((a & 0x80) || (b & 0x80) || (c & 0x80) || (d & 0x80))
+       return 1;
+      *(t++) = 16;
+    }
+  return 0;
+}