gcc-4.6.0: Bring in patches from FSF 4.6 branch

This brings in new patches from 4.6 release branch
updates the comment section of existing branch to not
contain patch numbers.

Tested build on qemu for arm ppc mips x86 and x86_64

Signed-off-by: Khem Raj <raj.khem@gmail.com>

1 files changed, 237 insertions, 0 deletions

diff --git a/meta/recipes-devtools/gcc/gcc-4.6.0/gcc-4_6-branch-backports/0376-2011-05-31-Thomas-Koenig-tkoenig-gcc.gnu.org.patch b/meta/recipes-devtools/gcc/gcc-4.6.0/gcc-4_6-branch-backports/0376-2011-05-31-Thomas-Koenig-tkoenig-gcc.gnu.org.patch
new file mode 100644
index 000000000..9948adb59
--- /dev/null
+++ b/meta/recipes-devtools/gcc/gcc-4.6.0/gcc-4_6-branch-backports/0376-2011-05-31-Thomas-Koenig-tkoenig-gcc.gnu.org.patch
@@ -0,0 +1,237 @@
+From de5792a9c6fd7c2d80640c54c9f901abf5ca56a4 Mon Sep 17 00:00:00 2001
+From: tkoenig <tkoenig@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Tue, 31 May 2011 21:37:01 +0000
+Subject: [PATCH] 2011-05-31  Thomas Koenig  <tkoenig@gcc.gnu.org>
+
+	Backport from trunk
+	PR fortran/45786
+	* interface.c (gfc_equivalent_op):  New function.
+	(gfc_check_interface):  Use gfc_equivalent_op instead
+	of switch statement.
+	* decl.c (access_attr_decl):  Also set access to an
+	equivalent operator.
+
+2011-05-31  Thomas Koenig  <tkoenig@gcc.gnu.org>
+
+	Backport from trunk
+	PR fortran/45786
+	* gfortran.dg/operator_7.f90:  New test case.
+
+
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_6-branch@174513 138bc75d-0d04-0410-961f-82ee72b054a4
+
+index 8b5f92b..80249b5 100644
+--- a/gcc/fortran/decl.c
++++ b/gcc/fortran/decl.c
+@@ -6467,8 +6467,19 @@ access_attr_decl (gfc_statement st)
+ 	case INTERFACE_INTRINSIC_OP:
+ 	  if (gfc_current_ns->operator_access[op] == ACCESS_UNKNOWN)
+ 	    {
++	      gfc_intrinsic_op other_op;
++
+ 	      gfc_current_ns->operator_access[op] =
+ 		(st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE;
++
++	      /* Handle the case if there is another op with the same
++		 function, for INTRINSIC_EQ vs. INTRINSIC_EQ_OS and so on.  */
++	      other_op = gfc_equivalent_op (op);
++
++	      if (other_op != INTRINSIC_NONE)
++		gfc_current_ns->operator_access[other_op] =
++		  (st == ST_PUBLIC) ? ACCESS_PUBLIC : ACCESS_PRIVATE;
++
+ 	    }
+ 	  else
+ 	    {
+diff --git a/gcc/fortran/gfortran.h b/gcc/fortran/gfortran.h
+index f20a29b..f3c4e8a 100644
+--- a/gcc/fortran/gfortran.h
++++ b/gcc/fortran/gfortran.h
+@@ -2816,6 +2816,7 @@ gfc_symtree* gfc_find_sym_in_symtree (gfc_symbol*);
+ bool gfc_arglist_matches_symbol (gfc_actual_arglist**, gfc_symbol*);
+ bool gfc_check_operator_interface (gfc_symbol*, gfc_intrinsic_op, locus);
+ int gfc_has_vector_subscript (gfc_expr*);
++gfc_intrinsic_op gfc_equivalent_op (gfc_intrinsic_op);
+ 
+ /* io.c */
+ extern gfc_st_label format_asterisk;
+diff --git a/gcc/fortran/interface.c b/gcc/fortran/interface.c
+index b5f77c3..18aaac1 100644
+--- a/gcc/fortran/interface.c
++++ b/gcc/fortran/interface.c
+@@ -1264,6 +1264,54 @@ check_uop_interfaces (gfc_user_op *uop)
+     }
+ }
+ 
++/* Given an intrinsic op, return an equivalent op if one exists,
++   or INTRINSIC_NONE otherwise.  */
++
++gfc_intrinsic_op
++gfc_equivalent_op (gfc_intrinsic_op op)
++{
++  switch(op)
++    {
++    case INTRINSIC_EQ:
++      return INTRINSIC_EQ_OS;
++
++    case INTRINSIC_EQ_OS:
++      return INTRINSIC_EQ;
++
++    case INTRINSIC_NE:
++      return INTRINSIC_NE_OS;
++
++    case INTRINSIC_NE_OS:
++      return INTRINSIC_NE;
++
++    case INTRINSIC_GT:
++      return INTRINSIC_GT_OS;
++
++    case INTRINSIC_GT_OS:
++      return INTRINSIC_GT;
++
++    case INTRINSIC_GE:
++      return INTRINSIC_GE_OS;
++
++    case INTRINSIC_GE_OS:
++      return INTRINSIC_GE;
++
++    case INTRINSIC_LT:
++      return INTRINSIC_LT_OS;
++
++    case INTRINSIC_LT_OS:
++      return INTRINSIC_LT;
++
++    case INTRINSIC_LE:
++      return INTRINSIC_LE_OS;
++
++    case INTRINSIC_LE_OS:
++      return INTRINSIC_LE;
++
++    default:
++      return INTRINSIC_NONE;
++    }
++}
+ 
+ /* For the namespace, check generic, user operator and intrinsic
+    operator interfaces for consistency and to remove duplicate
+@@ -1304,75 +1352,19 @@ gfc_check_interfaces (gfc_namespace *ns)
+ 
+       for (ns2 = ns; ns2; ns2 = ns2->parent)
+ 	{
++	  gfc_intrinsic_op other_op;
++	  
+ 	  if (check_interface1 (ns->op[i], ns2->op[i], 0,
+ 				interface_name, true))
+ 	    goto done;
+ 
+-	  switch (i)
+-	    {
+-	      case INTRINSIC_EQ:
+-		if (check_interface1 (ns->op[i], ns2->op[INTRINSIC_EQ_OS],
+-				      0, interface_name, true)) goto done;
+-		break;
+-
+-	      case INTRINSIC_EQ_OS:
+-		if (check_interface1 (ns->op[i], ns2->op[INTRINSIC_EQ],
+-				      0, interface_name, true)) goto done;
+-		break;
+-
+-	      case INTRINSIC_NE:
+-		if (check_interface1 (ns->op[i], ns2->op[INTRINSIC_NE_OS],
+-				      0, interface_name, true)) goto done;
+-		break;
+-
+-	      case INTRINSIC_NE_OS:
+-		if (check_interface1 (ns->op[i], ns2->op[INTRINSIC_NE],
+-				      0, interface_name, true)) goto done;
+-		break;
+-
+-	      case INTRINSIC_GT:
+-		if (check_interface1 (ns->op[i], ns2->op[INTRINSIC_GT_OS],
+-				      0, interface_name, true)) goto done;
+-		break;
+-
+-	      case INTRINSIC_GT_OS:
+-		if (check_interface1 (ns->op[i], ns2->op[INTRINSIC_GT],
+-				      0, interface_name, true)) goto done;
+-		break;
+-
+-	      case INTRINSIC_GE:
+-		if (check_interface1 (ns->op[i], ns2->op[INTRINSIC_GE_OS],
+-				      0, interface_name, true)) goto done;
+-		break;
+-
+-	      case INTRINSIC_GE_OS:
+-		if (check_interface1 (ns->op[i], ns2->op[INTRINSIC_GE],
+-				      0, interface_name, true)) goto done;
+-		break;
+-
+-	      case INTRINSIC_LT:
+-		if (check_interface1 (ns->op[i], ns2->op[INTRINSIC_LT_OS],
+-				      0, interface_name, true)) goto done;
+-		break;
+-
+-	      case INTRINSIC_LT_OS:
+-		if (check_interface1 (ns->op[i], ns2->op[INTRINSIC_LT],
+-				      0, interface_name, true)) goto done;
+-		break;
+-
+-	      case INTRINSIC_LE:
+-		if (check_interface1 (ns->op[i], ns2->op[INTRINSIC_LE_OS],
+-				      0, interface_name, true)) goto done;
+-		break;
+-
+-	      case INTRINSIC_LE_OS:
+-		if (check_interface1 (ns->op[i], ns2->op[INTRINSIC_LE],
+-				      0, interface_name, true)) goto done;
+-		break;
+-
+-	      default:
+-		break;
+-            }
++	  /* i should be gfc_intrinsic_op, but has to be int with this cast
++	     here for stupid C++ compatibility rules.  */
++	  other_op = gfc_equivalent_op ((gfc_intrinsic_op) i);
++	  if (other_op != INTRINSIC_NONE
++	    &&  check_interface1 (ns->op[i], ns2->op[other_op],
++				  0, interface_name, true))
++	    goto done;
+ 	}
+     }
+ 
+new file mode 100644
+index 0000000..66d8dd1
+--- /dev/null
++++ b/gcc/testsuite/gfortran.dg/operator_7.f90
+@@ -0,0 +1,27 @@
++! { dg-do compile }
++! PR fortran/45786 - operators were not correctly marked as public
++! if the alternative form was used.
++! Test case contributed by Neil Carlson.
++module foo_type
++  private
++  public :: foo, operator(==)
++  type :: foo
++    integer :: bar
++  end type
++  interface operator(.eq.)
++    module procedure eq_foo
++  end interface
++contains
++  logical function eq_foo (a, b)
++    type(foo), intent(in) :: a, b
++    eq_foo = (a%bar == b%bar)
++  end function
++end module
++
++ subroutine use_it (a, b)
++  use foo_type
++  type(foo) :: a, b
++  print *, a == b
++end subroutine
++
++! { dg-final { cleanup-modules "foo_type" } }
+-- 
+1.7.0.4
+