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reload.c (maybe_memory_address_p): New function. 

gcc/
        * reload.c (maybe_memory_address_p): New function.
        (find_reloads_address): Use it instead of memory_address_p.

gcc/testsuite/
	* gcc.dg/20030123-1.c: New test.

From-SVN: r61805
This commit is contained in:
Ulrich Weigand 2003-01-25 23:57:30 +00:00 committed by Ulrich Weigand
parent 5a09edba1f
commit acf9fa5f14
4 changed files with 50 additions and 2 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2003-01-25 Ulrich Weigand <uweigand@de.ibm.com>
* reload.c (maybe_memory_address_p): New function.
(find_reloads_address): Use it instead of memory_address_p.
2003-01-25 Kaz Kojima <kkojima@gcc.gnu.org>
* final.c (shorten_branches): Align the address of code label

26
gcc/reload.c
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@ -260,6 +260,7 @@ static int alternative_allows_memconst PARAMS ((const char *, int));
static rtx find_reloads_toplev PARAMS ((rtx, int, enum reload_type, int,
int, rtx, int *));
static rtx make_memloc PARAMS ((rtx, int));
static int maybe_memory_address_p PARAMS ((enum machine_mode, rtx, rtx *));
static int find_reloads_address PARAMS ((enum machine_mode, rtx *, rtx, rtx *,
int, enum reload_type, int, rtx));
static rtx subst_reg_equivs PARAMS ((rtx, rtx));
@ -4587,6 +4588,27 @@ make_memloc (ad, regno)
return tem;
}
/* Returns true if AD could be turned into a valid memory reference
to mode MODE by reloading the part pointed to by PART into a
register. */
static int
maybe_memory_address_p (mode, ad, part)
enum machine_mode mode;
rtx ad;
rtx *part;
{
int retv;
rtx tem = *part;
rtx reg = gen_rtx_REG (GET_MODE (tem), max_reg_num ());
*part = reg;
retv = memory_address_p (mode, ad);
*part = tem;
return retv;
}
/* Record all reloads needed for handling memory address AD
which appears in *LOC in a memory reference to mode MODE
which itself is found in location *MEMREFLOC.
@ -4886,7 +4908,7 @@ find_reloads_address (mode, memrefloc, ad, loc, opnum, type, ind_levels, insn)
|| XEXP (XEXP (ad, 0), 0) == arg_pointer_rtx
#endif
|| XEXP (XEXP (ad, 0), 0) == stack_pointer_rtx)
&& ! memory_address_p (mode, ad))
&& ! maybe_memory_address_p (mode, ad, &XEXP (XEXP (ad, 0), 1)))
{
*loc = ad = gen_rtx_PLUS (GET_MODE (ad),
plus_constant (XEXP (XEXP (ad, 0), 0),
@ -4911,7 +4933,7 @@ find_reloads_address (mode, memrefloc, ad, loc, opnum, type, ind_levels, insn)
|| XEXP (XEXP (ad, 0), 1) == arg_pointer_rtx
#endif
|| XEXP (XEXP (ad, 0), 1) == stack_pointer_rtx)
&& ! memory_address_p (mode, ad))
&& ! maybe_memory_address_p (mode, ad, &XEXP (XEXP (ad, 0), 0)))
{
*loc = ad = gen_rtx_PLUS (GET_MODE (ad),
XEXP (XEXP (ad, 0), 0),

4
gcc/testsuite/ChangeLog
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@ -1,3 +1,7 @@
2003-01-25 Ulrich Weigand <uweigand@de.ibm.com>
* gcc.dg/20030123-1.c: New test.
Sat Jan 25 21:06:49 CET 2003 Jan Hubicka <jh@suse.cz>
PR opt/8492

17
gcc/testsuite/gcc.dg/20030123-1.c Normal file
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@ -0,0 +1,17 @@
/* This used to ICE due to a reload bug on s390*. */
/* { dg-do compile { target s390*-*-* } } */
/* { dg-options "-O2" } */
void func (char *p);
void test (void)
{
char *p = alloca (4096);
long idx;
asm ("" : "=r" (idx) : : "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12");
func (p + idx + 1);
}