OpenE2K/gcc
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

re PR tree-optimization/27236 (inliner creates an INDIRECT_REF without TREE_THIS_VOLATILE set for *a)

Browse Source 
2006-04-24  Andrew Pinski  <pinskia@gcc.gnu.org>
	Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/27236
	* tree-inline.c (copy_body_r): Make sure to copy
	TREE_THIS_VOLATILE flag.

	* gcc.dg/tree-ssa/pr27236.c: New testcase.

Co-Authored-By: Richard Guenther <rguenther@suse.de>

From-SVN: r113221
This commit is contained in:
Andrew Pinski 2006-04-24 02:06:51 -07:00 committed by Richard Biener
parent 4e3bd7d561
commit d84b37b08a
4 changed files with 38 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
gcc/ChangeLog
View File

@ -1,3 +1,10 @@
2006-04-24 Andrew Pinski <pinskia@gcc.gnu.org>
Richard Guenther <rguenther@suse.de>
PR tree-optimization/27236
* tree-inline.c (copy_body_r): Make sure to copy
TREE_THIS_VOLATILE flag.
2006-04-24 Richard Guenther <rguenther@suse.de>
PR middle-end/26869

6
gcc/testsuite/ChangeLog
View File

@ -1,3 +1,9 @@
2006-04-24 Andrew Pinski <pinskia@gcc.gnu.org>
Richard Guenther <rguenther@suse.de>
PR tree-optimization/27236
* gcc.dg/tree-ssa/pr27236.c: New testcase.
2006-04-24 Volker Reichelt <reichelt@igpm.rwth-aachen.de>
PR c++/19963

19
gcc/testsuite/gcc.dg/tree-ssa/pr27236.c Normal file
View File

@ -0,0 +1,19 @@
/* { dg-do compile } */
/* { dg-options "-O2 -fdump-tree-optimized" } */
static inline int inline_read(volatile int *mem)
{
return *mem;
}
int foo_read(volatile int *mem)
{
return inline_read(mem);
}
unsigned int foo(volatile int *mem)
{
foo_read(mem);
return foo_read(mem);
}
/* { dg-final { scan-tree-dump-times "foo_read" 5 "optimized" } } */
/* { dg-final { cleanup-tree-dump "optimized" } } */

7
gcc/tree-inline.c
View File

@ -590,6 +590,7 @@ copy_body_r (tree *tp, int *walk_subtrees, void *data)
if (n)
{
tree new;
tree old;
/* If we happen to get an ADDR_EXPR in n->value, strip
it manually here as we'll eventually get ADDR_EXPRs
which lie about their types pointed to. In this case
@ -598,13 +599,17 @@ copy_body_r (tree *tp, int *walk_subtrees, void *data)
does other useful transformations, try that first, though. */
tree type = TREE_TYPE (TREE_TYPE ((tree)n->value));
new = unshare_expr ((tree)n->value);
old = *tp;
*tp = fold_indirect_ref_1 (type, new);
if (! *tp)
{
if (TREE_CODE (new) == ADDR_EXPR)
*tp = TREE_OPERAND (new, 0);
else
*tp = build1 (INDIRECT_REF, type, new);
{
*tp = build1 (INDIRECT_REF, type, new);
TREE_THIS_VOLATILE (*tp) = TREE_THIS_VOLATILE (old);
}
}
*walk_subtrees = 0;
return NULL;