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re PR target/45820 (FAIL: gcc.c-torture/compile/pr45728.c at -O1 and above) 

PR target/45820
	* config/pa/pa.c (pa_secondary_reload): Handle symbolic operands
	earlier.

From-SVN: r165128
This commit is contained in:
John David Anglin 2010-10-07 17:59:30 +00:00 committed by John David Anglin
parent 14cca48176
commit 4435df995a
2 changed files with 25 additions and 43 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2010-10-07 John David Anglin <dave.anglin@nrc-cnrc.gc.ca>
PR target/45820
* config/pa/pa.c (pa_secondary_reload): Handle symbolic operands
earlier.
2010-10-01 Jakub Jelinek <jakub@redhat.com>
Backport from mainline

62
gcc/config/pa/pa.c
View File

@ -5699,7 +5699,7 @@ static enum reg_class
pa_secondary_reload (bool in_p, rtx x, enum reg_class rclass,
enum machine_mode mode, secondary_reload_info *sri)
{
int is_symbolic, regno;
int regno;
/* Handle the easy stuff first. */
if (rclass == R1_REGS)
@ -5732,6 +5732,23 @@ pa_secondary_reload (bool in_p, rtx x, enum reg_class rclass,
return NO_REGS;
}
/* Secondary reloads of symbolic operands require %r1 as a scratch
register when we're generating PIC code and when the operand isn't
readonly. */
if (symbolic_expression_p (x))
{
if (GET_CODE (x) == HIGH)
x = XEXP (x, 0);
if (flag_pic || !read_only_operand (x, VOIDmode))
{
gcc_assert (mode == SImode || mode == DImode);
sri->icode = (mode == SImode ? CODE_FOR_reload_insi_r1
: CODE_FOR_reload_indi_r1);
return NO_REGS;
}
}
/* Profiling showed the PA port spends about 1.3% of its compilation
time in true_regnum from calls inside pa_secondary_reload_class. */
if (regno >= FIRST_PSEUDO_REGISTER || GET_CODE (x) == SUBREG)
@ -5790,48 +5807,7 @@ pa_secondary_reload (bool in_p, rtx x, enum reg_class rclass,
if (regno >= 0 && regno < FIRST_PSEUDO_REGISTER
&& (REGNO_REG_CLASS (regno) == SHIFT_REGS
&& FP_REG_CLASS_P (rclass)))
{
sri->icode = in_p ? reload_in_optab[mode] : reload_out_optab[mode];
return NO_REGS;
}
/* Secondary reloads of symbolic operands require %r1 as a scratch
register when we're generating PIC code and when the operand isn't
readonly. */
if (GET_CODE (x) == HIGH)
x = XEXP (x, 0);
/* Profiling has showed GCC spends about 2.6% of its compilation
time in symbolic_operand from calls inside pa_secondary_reload_class.
So, we use an inline copy to avoid useless work. */
switch (GET_CODE (x))
{
rtx op;
case SYMBOL_REF:
is_symbolic = !SYMBOL_REF_TLS_MODEL (x);
break;
case LABEL_REF:
is_symbolic = 1;
break;
case CONST:
op = XEXP (x, 0);
is_symbolic = (((GET_CODE (XEXP (op, 0)) == SYMBOL_REF
&& !SYMBOL_REF_TLS_MODEL (XEXP (op, 0)))
|| GET_CODE (XEXP (op, 0)) == LABEL_REF)
&& GET_CODE (XEXP (op, 1)) == CONST_INT);
break;
default:
is_symbolic = 0;
break;
}
if (is_symbolic && (flag_pic || !read_only_operand (x, VOIDmode)))
{
gcc_assert (mode == SImode || mode == DImode);
sri->icode = (mode == SImode ? CODE_FOR_reload_insi_r1
: CODE_FOR_reload_indi_r1);
}
sri->icode = in_p ? reload_in_optab[mode] : reload_out_optab[mode];
return NO_REGS;
}