Christian Bruel <christian.bruel@st.com>
* fold-const.c (tree_swap_operands_p): Treat SSA_NAMEs like
DECLs but prefer SSA_NAMEs over DECLs.
* gcc.dg/strict-overflow-5.c: New testcase.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@122040
138bc75d-0d04-0410-961f-
82ee72b054a4
2007-02-16 Richard Guenther <rguenther@suse.de>
+ Christian Bruel <christian.bruel@st.com>
+
+ * fold-const.c (tree_swap_operands_p): Treat SSA_NAMEs like
+ DECLs but prefer SSA_NAMEs over DECLs.
+
+2007-02-16 Richard Guenther <rguenther@suse.de>
* tree-flow-inline.h (single_imm_use_p): Remove.
(zero_imm_uses_p): Likewise.
&& (TREE_SIDE_EFFECTS (arg0) || TREE_SIDE_EFFECTS (arg1)))
return 0;
- if (DECL_P (arg1))
- return 0;
- if (DECL_P (arg0))
- return 1;
-
/* It is preferable to swap two SSA_NAME to ensure a canonical form
for commutative and comparison operators. Ensuring a canonical
form allows the optimizers to find additional redundancies without
&& SSA_NAME_VERSION (arg0) > SSA_NAME_VERSION (arg1))
return 1;
+ /* Put SSA_NAMEs last. */
+ if (TREE_CODE (arg1) == SSA_NAME)
+ return 0;
+ if (TREE_CODE (arg0) == SSA_NAME)
+ return 1;
+
+ /* Put variables last. */
+ if (DECL_P (arg1))
+ return 0;
+ if (DECL_P (arg0))
+ return 1;
+
return 0;
}
+2007-02-16 Richard Guenther <rguenther@suse.de>
+ Christian Bruel <christian.bruel@st.com>
+
+ * gcc.dg/strict-overflow-5.c: New testcase.
+
2007-02-16 Tobias Burnus <burnus@net-b.de>
PR fortran/30793
--- /dev/null
+/* { dg-do compile } */
+/* { dg-options "-fstrict-overflow -O2 -fdump-tree-final_cleanup" } */
+
+/* We can only unroll when using strict overflow semantics. */
+
+int foo (int i)
+{
+ int index;
+ int r=0;
+
+ for (index = i; index <= i+4; index+=2)
+ r++;
+
+ return r;
+}
+
+/* { dg-final { scan-tree-dump-times "r = 3" 1 "final_cleanup" } } */
+/* { dg-final { cleanup-tree-dump "final_cleanup" } } */
+