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s390.c (s390_delegitimize_address): Handle PLTOFF and PLT unspecs.

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2011-03-22  Andreas Krebbel  <Andreas.Krebbel@de.ibm.com>

	* config/s390/s390.c (s390_delegitimize_address): Handle PLTOFF
	and PLT unspecs.

From-SVN: r171279
This commit is contained in:
Andreas Krebbel 2011-03-22 07:29:53 +00:00 committed by Andreas Krebbel
parent 7f2acfca7d
commit 01841ac091
2 changed files with 24 additions and 3 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2011-03-22 Andreas Krebbel <Andreas.Krebbel@de.ibm.com>
* config/s390/s390.c (s390_delegitimize_address): Handle PLTOFF
and PLT unspecs.
2011-03-21 Richard Sandiford <richard.sandiford@linaro.org>
* expr.h (prepare_operand): Move to...

22
gcc/config/s390/s390.c
View File

@ -5019,7 +5019,12 @@ s390_delegitimize_address (rtx orig_x)
/* Extract the symbol ref from:
(plus:SI (reg:SI 12 %r12)
(const:SI (unspec:SI [(symbol_ref/f:SI ("*.LC0"))]
UNSPEC_GOTOFF))) */
UNSPEC_GOTOFF/PLTOFF)))
and
(plus:SI (reg:SI 12 %r12)
(const:SI (plus:SI (unspec:SI [(symbol_ref:SI ("L"))]
UNSPEC_GOTOFF/PLTOFF)
(const_int 4 [0x4])))) */
if (GET_CODE (x) == PLUS
&& REG_P (XEXP (x, 0))
&& REGNO (XEXP (x, 0)) == PIC_OFFSET_TABLE_REGNUM
@ -5027,8 +5032,14 @@ s390_delegitimize_address (rtx orig_x)
{
/* The const operand. */
y = XEXP (XEXP (x, 1), 0);
if (GET_CODE (y) == PLUS
&& GET_CODE (XEXP (y, 1)) == CONST_INT)
y = XEXP (y, 0);
if (GET_CODE (y) == UNSPEC
&& XINT (y, 1) == UNSPEC_GOTOFF)
&& (XINT (y, 1) == UNSPEC_GOTOFF
|| XINT (y, 1) == UNSPEC_PLTOFF))
return XVECEXP (y, 0, 0);
}
@ -5050,9 +5061,14 @@ s390_delegitimize_address (rtx orig_x)
}
else if (GET_CODE (x) == CONST)
{
/* Extract the symbol ref from:
(mem:QI (const:DI (unspec:DI [(symbol_ref:DI ("foo"))]
UNSPEC_PLT/GOTENT))) */
y = XEXP (x, 0);
if (GET_CODE (y) == UNSPEC
&& XINT (y, 1) == UNSPEC_GOTENT)
&& (XINT (y, 1) == UNSPEC_GOTENT
|| XINT (y, 1) == UNSPEC_PLT))
y = XVECEXP (y, 0, 0);
else
return orig_x;