PR tree-optimization/19831
gcc/
* tree-ssa-alias.c (stmt_kills_ref_p_1): Handle BUILT_IN_FREE.
gcc/testsuite/
* gcc.dg/tree-ssa/alias-25.c: New file.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@204160
138bc75d-0d04-0410-961f-
82ee72b054a4
+2013-10-29 Marc Glisse <marc.glisse@inria.fr>
+
+ PR tree-optimization/19831
+ * tree-ssa-alias.c (stmt_kills_ref_p_1): Handle BUILT_IN_FREE.
+
2013-10-29 Andrew MacLeod <amacleod@redhat.com>
* tree-outof-ssa.h: Remove include files.
+2013-10-29 Marc Glisse <marc.glisse@inria.fr>
+
+ PR tree-optimization/19831
+ * gcc.dg/tree-ssa/alias-25.c: New file.
+
2013-10-29 Richard Biener <rguenther@suse.de>
* g++.dg/vect/slp-pr56812.cc: Adjust with respect to -fvect-cost-model
--- /dev/null
+/* { dg-do compile } */
+/* { dg-options "-O1 -fdump-tree-optimized" } */
+
+void f (long *p) {
+ *p = 42;
+ p[4] = 42;
+ __builtin_free (p);
+}
+
+/* { dg-final { scan-tree-dump-not "= 42" "optimized" } } */
+/* { dg-final { cleanup-tree-dump "optimized" } } */
+
&& DECL_BUILT_IN_CLASS (callee) == BUILT_IN_NORMAL)
switch (DECL_FUNCTION_CODE (callee))
{
+ case BUILT_IN_FREE:
+ {
+ tree ptr = gimple_call_arg (stmt, 0);
+ tree base = ao_ref_base (ref);
+ if (base && TREE_CODE (base) == MEM_REF
+ && TREE_OPERAND (base, 0) == ptr)
+ return true;
+ break;
+ }
+
case BUILT_IN_MEMCPY:
case BUILT_IN_MEMPCPY:
case BUILT_IN_MEMMOVE: