From: Jakub Jelinek <jakub@redhat.com>
Date: Wed, 7 Oct 2009 18:39:52 +0000 (+0200)
Subject: dwarf2out.c (tree_add_const_value_attribute_for_decl): Don't add DW_AT_const_value... 
X-Git-Tag: releases/gcc-4.5.0~3055
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=95a28767abe40e3b590c98275a2fca496410a59f;p=thirdparty%2Fgcc.git

dwarf2out.c (tree_add_const_value_attribute_for_decl): Don't add DW_AT_const_value if VAR_DIE already has DW_AT_abstract_origin...

	* dwarf2out.c (tree_add_const_value_attribute_for_decl): Don't add
	DW_AT_const_value if VAR_DIE already has DW_AT_abstract_origin
	refering to a DIE with DW_AT_const_value.

	* gcc.dg/debug/dwarf2/inline3.c: New test.

From-SVN: r152535
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index cf0d248f258d..b1a88a38d71c 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2009-10-07  Jakub Jelinek  <jakub@redhat.com>
+
+	* dwarf2out.c (tree_add_const_value_attribute_for_decl): Don't add
+	DW_AT_const_value if VAR_DIE already has DW_AT_abstract_origin
+	refering to a DIE with DW_AT_const_value.
+
 2009-10-07  Vladimir Makarov  <vmakarov@redhat.com>
 
 	PR middle-end/22072
diff --git a/gcc/dwarf2out.c b/gcc/dwarf2out.c
index f9304e543278..7e0d466331e1 100644
--- a/gcc/dwarf2out.c
+++ b/gcc/dwarf2out.c
@@ -15701,6 +15701,10 @@ tree_add_const_value_attribute_for_decl (dw_die_ref var_die, tree decl)
     else
       return false;
 
+  /* Don't add DW_AT_const_value if abstract origin already has one.  */
+  if (get_AT (var_die, DW_AT_const_value))
+    return false;
+
   return tree_add_const_value_attribute (var_die, DECL_INITIAL (decl));
 }
 
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 41a7a5e5969f..ea24c57348fa 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,7 @@
+2009-10-07  Jakub Jelinek  <jakub@redhat.com>
+
+	* gcc.dg/debug/dwarf2/inline3.c: New test.
+
 2009-10-07  Daniel Kraft  <d@domob.eu>
 
 	PR fortran/41615
diff --git a/gcc/testsuite/gcc.dg/debug/dwarf2/inline3.c b/gcc/testsuite/gcc.dg/debug/dwarf2/inline3.c
new file mode 100644
index 000000000000..feafb33e829d
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/debug/dwarf2/inline3.c
@@ -0,0 +1,22 @@
+/* Verify that only one DW_AT_const_value is emitted for baz,
+   not for baz abstract DIE and again inside of
+   DW_TAG_inlined_subroutine.  */
+/* { dg-options "-O2 -g -dA" } */
+/* { dg-do compile } */
+/* { dg-final { scan-assembler-times " DW_AT_const_value" 1 } } */
+
+struct A { const long i; const long j; };
+
+static inline long
+foo (void)
+{
+  const struct A baz = { .i = 2, .j = 21 };
+  asm volatile ("" : : : "memory");
+  return baz.i * baz.j;
+}
+
+int
+main ()
+{
+  return foo () - 42;
+}