+2010-11-22 Alexander Monakov <amonakov@ispras.ru>
+
+ PR rtl-optimization/45652
+ * alias.c (get_reg_base_value): New.
+ * rtl.h (get_reg_base_value): Add prototype.
+ * sel-sched.c (init_regs_for_mode): Use it. Don't use registers with
+ non-null REG_BASE_VALUE for renaming.
2010-11-22 Jeremie Salvucci <jeremie.salvucci@free.fr>
Basile Starynkevitch <basile@starynkevitch.net>
reg_seen[regno] = 1;
}
+/* Return REG_BASE_VALUE for REGNO. Selective scheduler uses this to avoid
+ using hard registers with non-null REG_BASE_VALUE for renaming. */
+rtx
+get_reg_base_value (unsigned int regno)
+{
+ return VEC_index (rtx, reg_base_value, regno);
+}
+
/* If a value is known for REGNO, return it. */
rtx
extern rtx gen_hard_reg_clobber (enum machine_mode, unsigned int);
extern rtx get_reg_known_value (unsigned int);
extern bool get_reg_known_equiv_p (unsigned int);
+extern rtx get_reg_base_value (unsigned int);
#ifdef STACK_REGS
extern int stack_regs_mentioned (const_rtx insn);
/* Can't use regs which aren't saved by
the prologue. */
|| !TEST_HARD_REG_BIT (sel_hrd.regs_ever_used, cur_reg + i)
+ /* Can't use regs with non-null REG_BASE_VALUE, because adjusting
+ it affects aliasing globally and invalidates all AV sets. */
+ || get_reg_base_value (cur_reg + i)
#ifdef LEAF_REGISTERS
/* We can't use a non-leaf register if we're in a
leaf function. */
+2010-11-22 Alexander Monakov <amonakov@ispras.ru>
+
+ PR rtl-optimization/45652
+ * gcc.dg/pr45652.c: New.
+
2010-11-21 Richard Henderson <rth@redhat.com>
PR rtl-optimization/46571
--- /dev/null
+/* { dg-do run { target powerpc*-*-* ia64-*-* x86_64-*-* } } */
+/* { dg-options "-O2 -fselective-scheduling2" } */
+
+struct S {
+ double i[2];
+};
+
+void __attribute__ ((noinline)) checkcd (struct S x)
+{
+ if (x.i[0] != 7.0 || x.i[1] != 8.0)
+ __builtin_abort ();
+}
+
+void __attribute__ ((noinline)) testvacd (int n, ...)
+{
+ int i;
+ __builtin_va_list ap;
+ __builtin_va_start (ap, n);
+ for (i = 0; i < n; i++)
+ {
+ struct S t = __builtin_va_arg (ap, struct S);
+ checkcd (t);
+ }
+ __builtin_va_end (ap);
+}
+
+void
+testitcd (void)
+{
+ struct S x = { { 7.0, 8.0 } };
+ testvacd (2, x, x);
+}
+
+int
+main ()
+{
+ testitcd ();
+ return 0;
+}