+2005-12-18 Ulrich Weigand <uweigand@de.ibm.com>
+
+ PR rtl-optimization/21041
+ * reload.c (find_reloads_subreg_address): Replace paradoxical
+ subreg of MEM by widened access only if the resulting memory
+ is properly aligned, even on !STRICT_ALIGNMENT targets.
+
2005-12-18 Andreas Krebbel <krebbel1@de.ibm.com>
* tree-cfg.c (tree_flow_call_edges_add): Check for empty basic blocks.
/* If this was a paradoxical subreg that we replaced, the
resulting memory must be sufficiently aligned to allow
us to widen the mode of the memory. */
- if (outer_size > inner_size && STRICT_ALIGNMENT)
+ if (outer_size > inner_size)
{
rtx base;
+2005-12-18 Ulrich Weigand <uweigand@de.ibm.com>
+
+ PR rtl-optimization/21041
+ * gcc.dg/pr21041.c: New test.
+
2005-12-18 Andreas Krebbel <krebbel1@de.ibm.com>
* gcc.dg/20051201-1.c: New test.
--- /dev/null
+
+/* { dg-do compile { target fpic } } */
+/* { dg-options "-O2 -fPIC" } */
+
+struct args
+{
+ short int matrix[8][8];
+ char **current;
+};
+
+int test (struct args *args, char *init, int a, int b)
+{
+ int i, j, k;
+
+ if (!args || a > b || a < 0)
+ return -1;
+
+ for (i = 0; i < 2; i++)
+ {
+ char *dest = *args->current;
+ char *p = dest;
+
+ for (j = 0; j < 8; j++)
+ *p++ = *init++;
+
+ for (k = 0; k < 8; k++)
+ {
+ short int *blockvals = &args->matrix[k][0];
+ dest[0] += blockvals[0];
+ dest[1] += blockvals[1];
+ dest[2] += blockvals[2];
+ dest[3] += blockvals[3];
+ dest[4] += blockvals[4];
+ dest[5] += blockvals[5];
+ dest[6] += blockvals[6];
+ dest[7] += blockvals[7];
+ }
+ }
+
+ return 1;
+}
+