compiler: Don't use memcmp for equality if struct has trailing padding.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@193791 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 16 insertions, 16 deletions

diff --git a/gcc/go/gofrontend/types.h b/gcc/go/gofrontend/types.h
index cced68ddd68..a62a6cfbf97 100644
--- a/gcc/go/gofrontend/types.h
+++ b/gcc/go/gofrontend/types.h
@@ -576,7 +576,7 @@ class Type
   // identity function which gets nothing but a pointer to the value
   // and a size.
   bool
-  compare_is_identity(Gogo* gogo) const
+  compare_is_identity(Gogo* gogo)
   { return this->do_compare_is_identity(gogo); }
 
   // Return a hash code for this type for the method hash table.
@@ -950,7 +950,7 @@ class Type
   { return false; }
 
   virtual bool
-  do_compare_is_identity(Gogo*) const = 0;
+  do_compare_is_identity(Gogo*) = 0;
 
   virtual unsigned int
   do_hash_for_method(Gogo*) const;
@@ -1458,7 +1458,7 @@ class Integer_type : public Type
 
 protected:
   bool
-  do_compare_is_identity(Gogo*) const
+  do_compare_is_identity(Gogo*)
   { return true; }
 
   unsigned int
@@ -1535,7 +1535,7 @@ class Float_type : public Type
 
  protected:
   bool
-  do_compare_is_identity(Gogo*) const
+  do_compare_is_identity(Gogo*)
   { return false; }
 
   unsigned int
@@ -1604,7 +1604,7 @@ class Complex_type : public Type
 
  protected:
   bool
-  do_compare_is_identity(Gogo*) const
+  do_compare_is_identity(Gogo*)
   { return false; }
 
   unsigned int
@@ -1664,7 +1664,7 @@ class String_type : public Type
   { return true; }
 
   bool
-  do_compare_is_identity(Gogo*) const
+  do_compare_is_identity(Gogo*)
   { return false; }
 
   Btype*
@@ -1778,7 +1778,7 @@ class Function_type : public Type
   { return true; }
 
   bool
-  do_compare_is_identity(Gogo*) const
+  do_compare_is_identity(Gogo*)
   { return false; }
 
   unsigned int
@@ -1853,7 +1853,7 @@ class Pointer_type : public Type
   { return true; }
 
   bool
-  do_compare_is_identity(Gogo*) const
+  do_compare_is_identity(Gogo*)
   { return true; }
 
   unsigned int
@@ -2139,7 +2139,7 @@ class Struct_type : public Type
   do_has_pointer() const;
 
   bool
-  do_compare_is_identity(Gogo*) const;
+  do_compare_is_identity(Gogo*);
 
   unsigned int
   do_hash_for_method(Gogo*) const;
@@ -2272,7 +2272,7 @@ class Array_type : public Type
   }
 
   bool
-  do_compare_is_identity(Gogo*) const;
+  do_compare_is_identity(Gogo*);
 
   unsigned int
   do_hash_for_method(Gogo*) const;
@@ -2365,7 +2365,7 @@ class Map_type : public Type
   { return true; }
 
   bool
-  do_compare_is_identity(Gogo*) const
+  do_compare_is_identity(Gogo*)
   { return false; }
 
   unsigned int
@@ -2451,7 +2451,7 @@ class Channel_type : public Type
   { return true; }
 
   bool
-  do_compare_is_identity(Gogo*) const
+  do_compare_is_identity(Gogo*)
   { return true; }
 
   unsigned int
@@ -2582,7 +2582,7 @@ class Interface_type : public Type
   { return true; }
 
   bool
-  do_compare_is_identity(Gogo*) const
+  do_compare_is_identity(Gogo*)
   { return false; }
 
   unsigned int
@@ -2865,7 +2865,7 @@ class Named_type : public Type
   do_has_pointer() const;
 
   bool
-  do_compare_is_identity(Gogo*) const;
+  do_compare_is_identity(Gogo*);
 
   unsigned int
   do_hash_for_method(Gogo*) const;
@@ -2949,7 +2949,7 @@ class Named_type : public Type
   // function exits.
   mutable bool seen_;
   // Like seen_, but used only by do_compare_is_identity.
-  mutable bool seen_in_compare_is_identity_;
+  bool seen_in_compare_is_identity_;
   // Like seen_, but used only by do_get_backend.
   bool seen_in_get_backend_;
 };
@@ -3004,7 +3004,7 @@ class Forward_declaration_type : public Type
   { return this->real_type()->has_pointer(); }
 
   bool
-  do_compare_is_identity(Gogo* gogo) const
+  do_compare_is_identity(Gogo* gogo)
   { return this->real_type()->compare_is_identity(gogo); }
 
   unsigned int