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re PR tree-optimization/60895 (error: address taken, but ADDRESSABLE bit not set) 

2014-04-23  Richard Biener  <rguenther@suse.de>

	PR middle-end/60895
	* tree-inline.c (declare_return_variable): Use mark_addressable.

	* g++.dg/torture/pr60895.C: New testcase.

From-SVN: r209675
This commit is contained in:
Richard Biener 2014-04-23 08:27:00 +00:00 committed by Richard Biener
parent 92562f8869
commit 62ba699e01
4 changed files with 44 additions and 1 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2014-04-23 Richard Biener <rguenther@suse.de>
PR middle-end/60895
* tree-inline.c (declare_return_variable): Use mark_addressable.
2014-04-23 Richard Biener <rguenther@suse.de>
PR middle-end/60891

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2014-04-23 Richard Biener <rguenther@suse.de>
PR middle-end/60895
* g++.dg/torture/pr60895.C: New testcase.
2014-04-23 Richard Biener <rguenther@suse.de>
PR middle-end/60891

32
gcc/testsuite/g++.dg/torture/pr60895.C Normal file
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@ -0,0 +1,32 @@
// { dg-do compile }
struct C
{
double elems[3];
};
C
foo ()
{
C a;
double *f = a.elems;
int b;
for (; b;)
{
*f = 0;
++f;
}
return a;
}
struct J
{
C c;
__attribute__((always_inline)) J () : c (foo ()) {}
};
void
bar ()
{
J ();
}

3
gcc/tree-inline.c
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@ -3120,7 +3120,8 @@ declare_return_variable (copy_body_data *id, tree return_slot, tree modify_dest,
{
var = return_slot;
gcc_assert (TREE_CODE (var) != SSA_NAME);
TREE_ADDRESSABLE (var) |= TREE_ADDRESSABLE (result);
if (TREE_ADDRESSABLE (result))
mark_addressable (var);
}
if ((TREE_CODE (TREE_TYPE (result)) == COMPLEX_TYPE
|| TREE_CODE (TREE_TYPE (result)) == VECTOR_TYPE)