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re PR rtl-optimization/57559 (S/390: ICE with lra) 

2013-06-08  Vladimir Makarov  <vmakarov@redhat.com>

	PR rtl-optimization/57559
	* lra-constraints.c (process_alt_operands): Don't discourage
	memory with known offset for offsetable memory constraint.
	* lra.c (lra_emit_add): Exchange y and z for 2-op add insn.

2013-06-08  Vladimir Makarov  <vmakarov@redhat.com>

	PR rtl-optimization/57559
	* gcc.target/s390/pr57559.c : New test.

From-SVN: r199859
This commit is contained in:
Vladimir Makarov 2013-06-08 18:37:40 +00:00 committed by Vladimir Makarov
parent 7b91690215
commit ed52a84e3f
5 changed files with 41 additions and 12 deletions
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7
gcc/ChangeLog
View File

@ -1,3 +1,10 @@
2013-06-08 Vladimir Makarov <vmakarov@redhat.com>
PR rtl-optimization/57559
* lra-constraints.c (process_alt_operands): Don't discourage
memory with known offset for offsetable memory constraint.
* lra.c (lra_emit_add): Exchange y and z for 2-op add insn.
2013-06-08 Eric Botcazou <ebotcazou@adacore.com>
* varasm.c (struct oc_local_state): Reorder fields.

11
gcc/lra-constraints.c
View File

@ -1997,15 +1997,8 @@ process_alt_operands (int only_alternative)
(op, this_alternative) == NO_REGS))))
reject += LRA_MAX_REJECT;
if (MEM_P (op) && offmemok)
{
/* If we know offset and this non-offsetable memory,
something wrong with this memory and it is better
to try other memory possibilities. */
if (MEM_OFFSET_KNOWN_P (op))
reject += LRA_MAX_REJECT;
}
else if (! (const_to_mem && constmemok))
if (! (MEM_P (op) && offmemok)
&& ! (const_to_mem && constmemok))
{
/* We prefer to reload pseudos over reloading other
things, since such reloads may be able to be

6
gcc/lra.c
View File

@ -306,11 +306,11 @@ lra_emit_add (rtx x, rtx y, rtx z)
|| (disp != NULL_RTX && ! CONSTANT_P (disp))
|| (scale != NULL_RTX && ! CONSTANT_P (scale)))
{
/* Its is not an address generation. Probably we have no 3 op
/* It is not an address generation. Probably we have no 3 op
add. Last chance is to use 2-op add insn. */
lra_assert (x != y && x != z);
emit_move_insn (x, z);
insn = gen_add2_insn (x, y);
emit_move_insn (x, y);
insn = gen_add2_insn (x, z);
emit_insn (insn);
}
else

5
gcc/testsuite/ChangeLog
View File

@ -1,3 +1,8 @@
2013-06-08 Vladimir Makarov <vmakarov@redhat.com>
PR rtl-optimization/57559
* gcc.target/s390/pr57559.c : New test.
2013-06-08 Tobias Burnus <burnus@net-b.de>
PR fortran/37336

24
gcc/testsuite/gcc.target/s390/pr57559.c Normal file
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@ -0,0 +1,24 @@
/* PR rtl-optimization/57559 */
/* { dg-do compile } */
/* { dg-options "-march=z10 -m64 -mzarch -O1" } */
typedef int int32_t;
typedef unsigned char uint8_t;
typedef unsigned int uint32_t;
struct _IO_marker
{
};
static const int32_t mfcone = 1;
static const uint8_t *mfctop = (const uint8_t *) &mfcone;
int32_t
decContextTestEndian (uint8_t quiet)
{
int32_t res = 0;
uint32_t dle = (uint32_t) 0;
if (*(int *) 10 != 0)
{
res = (int32_t) * mfctop - dle;
}
return res;
}