2010-01-13 Richard Guenther <rguenther@suse.de>
PR middle-end/42716
* fold-const.c (fold_unary_loc): Fold INDIRECT_REFs.
* gcc.c-torture/compile/pr42716.c: New testcase.
From-SVN: r155859
+2010-01-13 Richard Guenther <rguenther@suse.de>
+
+ PR middle-end/42716
+ * fold-const.c (fold_unary_loc): Fold INDIRECT_REFs.
+
2010-01-13 Jakub Jelinek <jakub@redhat.com>
PR debug/41371
}
return NULL_TREE;
+ case INDIRECT_REF:
+ /* Fold *&X to X if X is an lvalue. */
+ if (TREE_CODE (op0) == ADDR_EXPR)
+ {
+ tree op00 = TREE_OPERAND (op0, 0);
+ if ((TREE_CODE (op00) == VAR_DECL
+ || TREE_CODE (op00) == PARM_DECL
+ || TREE_CODE (op00) == RESULT_DECL)
+ && !TREE_READONLY (op00))
+ return op00;
+ }
+ return NULL_TREE;
+
default:
return NULL_TREE;
} /* switch (code) */
+2010-01-13 Richard Guenther <rguenther@suse.de>
+
+ PR middle-end/42716
+ * gcc.c-torture/compile/pr42716.c: New testcase.
+
2010-01-13 Richard Guenther <rguenther@suse.de>
PR lto/42678
--- /dev/null
+static short foo (long long si1, short si2)
+{
+ return si1 > 0 && si2 > 0 || si1 < 0
+ && si2 < 0 && si1 < 1 - si2 ? : si1 + si2;
+}
+
+int g_13;
+unsigned g_17;
+
+int safe (int, int);
+
+void bar (short p_51, short * p_52)
+{
+ int *const l_55 = &g_13;
+ if (safe (*p_52, g_13 != foo (*p_52 & *l_55 == g_13 && g_17 >= 1, 0)))
+ {
+ }
+}