+2015-06-30 Vladimir Makarov <vmakarov@redhat.com>
+
+ PR debug/66691
+ * lra-int.h (lra_substitute_pseudo): Add a parameter.
+ (lra_substitute_pseudo_within_insn): Ditto.
+ * lra.c (lra_substitute_pseudo): Add a parameter. Simplify subreg
+ of constant.
+ (lra_substitute_pseudo_within_insn): Add a parameter. Transfer it
+ to lra_substitute_pseudo.
+ * lra-lives.c (process_bb_lives): Add an argument to
+ lra_substitute_pseudo_within_insn call.
+ * lra-constraints.c (inherit_reload_reg, split_reg): Add an
+ argument to lra_substitute_pseudo and
+ lra_substitute_pseudo_within_insn calls.
+ (remove_inheritance_pseudos, undo_optional_reloads): Ditto.
+
2015-06-30 H.J. Lu <hongjiu.lu@intel.com>
* configure: Regenerated.
}
return false;
}
- lra_substitute_pseudo_within_insn (insn, original_regno, new_reg);
+ lra_substitute_pseudo_within_insn (insn, original_regno, new_reg, false);
lra_update_insn_regno_info (insn);
if (! def_p)
/* We now have a new usage insn for original regno. */
lra_assert (DEBUG_INSN_P (usage_insn));
next_usage_insns = XEXP (next_usage_insns, 1);
}
- lra_substitute_pseudo (&usage_insn, original_regno, new_reg);
+ lra_substitute_pseudo (&usage_insn, original_regno, new_reg, false);
lra_update_insn_regno_info (as_a <rtx_insn *> (usage_insn));
if (lra_dump_file != NULL)
{
usage_insn = XEXP (next_usage_insns, 0);
lra_assert (DEBUG_INSN_P (usage_insn));
next_usage_insns = XEXP (next_usage_insns, 1);
- lra_substitute_pseudo (&usage_insn, original_regno, new_reg);
+ lra_substitute_pseudo (&usage_insn, original_regno, new_reg, false);
lra_update_insn_regno_info (as_a <rtx_insn *> (usage_insn));
if (lra_dump_file != NULL)
{
{
if (change_p && bitmap_bit_p (remove_pseudos, regno))
{
- lra_substitute_pseudo_within_insn (
- curr_insn, regno, regno_reg_rtx[restore_regno]);
+ lra_substitute_pseudo_within_insn
+ (curr_insn, regno, regno_reg_rtx[restore_regno],
+ false);
restored_regs_p = true;
}
else
we remove the inheritance pseudo and the optional
reload. */
}
- lra_substitute_pseudo_within_insn (
- insn, regno,
- regno_reg_rtx[lra_reg_info[regno].restore_regno]);
+ lra_substitute_pseudo_within_insn
+ (insn, regno, regno_reg_rtx[lra_reg_info[regno].restore_regno],
+ false);
lra_update_insn_regno_info (insn);
if (lra_dump_file != NULL)
{
extern void lra_process_new_insns (rtx_insn *, rtx_insn *, rtx_insn *,
const char *);
-extern bool lra_substitute_pseudo (rtx *, int, rtx);
-extern bool lra_substitute_pseudo_within_insn (rtx_insn *, int, rtx);
+extern bool lra_substitute_pseudo (rtx *, int, rtx, bool);
+extern bool lra_substitute_pseudo_within_insn (rtx_insn *, int, rtx, bool);
extern lra_insn_recog_data_t lra_set_insn_recog_data (rtx_insn *);
extern lra_insn_recog_data_t lra_update_insn_recog_data (rtx_insn *);
{
insn = lra_insn_recog_data[uid]->insn;
lra_substitute_pseudo_within_insn (insn, dst_regno,
- SET_SRC (set));
+ SET_SRC (set), true);
lra_update_insn_regno_info (insn);
}
}
\f
/* Replace all references to register OLD_REGNO in *LOC with pseudo
- register NEW_REG. Return true if any change was made. */
+ register NEW_REG. Try to simplify subreg of constant if SUBREG_P.
+ Return true if any change was made. */
bool
-lra_substitute_pseudo (rtx *loc, int old_regno, rtx new_reg)
+lra_substitute_pseudo (rtx *loc, int old_regno, rtx new_reg, bool subreg_p)
{
rtx x = *loc;
bool result = false;
return false;
code = GET_CODE (x);
- if (code == REG && (int) REGNO (x) == old_regno)
+ if (code == SUBREG && subreg_p)
{
- machine_mode mode = GET_MODE (*loc);
+ rtx subst, inner = SUBREG_REG (x);
+ /* Transform subreg of constant while we still have inner mode
+ of the subreg. The subreg internal should not be an insn
+ operand. */
+ if (REG_P (inner) && (int) REGNO (inner) == old_regno
+ && CONSTANT_P (new_reg)
+ && (subst = simplify_subreg (GET_MODE (x), new_reg, GET_MODE (inner),
+ SUBREG_BYTE (x))) != NULL_RTX)
+ {
+ *loc = subst;
+ return true;
+ }
+
+ }
+ else if (code == REG && (int) REGNO (x) == old_regno)
+ {
+ machine_mode mode = GET_MODE (x);
machine_mode inner_mode = GET_MODE (new_reg);
if (mode != inner_mode
{
if (fmt[i] == 'e')
{
- if (lra_substitute_pseudo (&XEXP (x, i), old_regno, new_reg))
+ if (lra_substitute_pseudo (&XEXP (x, i), old_regno,
+ new_reg, subreg_p))
result = true;
}
else if (fmt[i] == 'E')
{
for (j = XVECLEN (x, i) - 1; j >= 0; j--)
- if (lra_substitute_pseudo (&XVECEXP (x, i, j), old_regno, new_reg))
+ if (lra_substitute_pseudo (&XVECEXP (x, i, j), old_regno,
+ new_reg, subreg_p))
result = true;
}
}
return result;
}
-/* Call lra_substitute_pseudo within an insn. This won't update the insn ptr,
- just the contents of the insn. */
+/* Call lra_substitute_pseudo within an insn. Try to simplify subreg
+ of constant if SUBREG_P. This won't update the insn ptr, just the
+ contents of the insn. */
bool
-lra_substitute_pseudo_within_insn (rtx_insn *insn, int old_regno, rtx new_reg)
+lra_substitute_pseudo_within_insn (rtx_insn *insn, int old_regno,
+ rtx new_reg, bool subreg_p)
{
rtx loc = insn;
- return lra_substitute_pseudo (&loc, old_regno, new_reg);
+ return lra_substitute_pseudo (&loc, old_regno, new_reg, subreg_p);
}
\f
+2015-06-30 Vladimir Makarov <vmakarov@redhat.com>
+
+ PR debug/66691
+ * gcc.target/i386/pr66691.c: New.
+
2015-06-30 H.J. Lu <hongjiu.lu@intel.com>
* gcc.target/i386/iamcu/abi-iamcu.exp: New file.