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re PR target/79131 (ICE: in extract_constrain_insn, at recog.c:2213, big-endian ARM)

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2017-01-27  Vladimir Makarov  <vmakarov@redhat.com>

	PR target/79131
	* lra-assigns.c (find_hard_regno_for_1): Take endianess for into
	account to calculate conflict_set.

2017-01-27  Vladimir Makarov  <vmakarov@redhat.com>

	PR target/79131
	* gcc.target/arm/pr79131.c: Rename to gcc.target/arm/pr79131-1.c.
	* gcc.target/arm/pr79131-2.c: New.

From-SVN: r244989
This commit is contained in:
Vladimir Makarov 2017-01-27 16:50:11 +00:00 committed by Vladimir Makarov
parent 20f058d098
commit 9eb7045b54
5 changed files with 68 additions and 26 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2017-01-27 Vladimir Makarov <vmakarov@redhat.com>
PR target/79131
* lra-assigns.c (find_hard_regno_for_1): Take endianess for into
account to calculate conflict_set.
2017-01-27 Bin Cheng <bin.cheng@arm.com>
PR rtl-optimization/78559

65
gcc/lra-assigns.c
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@ -564,32 +564,45 @@ find_hard_regno_for_1 (int regno, int *cost, int try_only_hard_regno,
offset = lra_reg_info[regno].offset;
CLEAR_HARD_REG_SET (impossible_start_hard_regs);
EXECUTE_IF_SET_IN_SPARSESET (live_range_hard_reg_pseudos, conflict_regno)
if (lra_reg_val_equal_p (conflict_regno, val, offset))
{
conflict_hr = live_pseudos_reg_renumber[conflict_regno];
nregs = (hard_regno_nregs[conflict_hr]
[lra_reg_info[conflict_regno].biggest_mode]);
/* Remember about multi-register pseudos. For example, 2 hard
register pseudos can start on the same hard register but can
not start on HR and HR+1/HR-1. */
for (hr = conflict_hr + 1;
hr < FIRST_PSEUDO_REGISTER && hr < conflict_hr + nregs;
hr++)
SET_HARD_REG_BIT (impossible_start_hard_regs, hr);
for (hr = conflict_hr - 1;
hr >= 0 && hr + hard_regno_nregs[hr][biggest_mode] > conflict_hr;
hr--)
SET_HARD_REG_BIT (impossible_start_hard_regs, hr);
}
else
{
add_to_hard_reg_set (&conflict_set,
lra_reg_info[conflict_regno].biggest_mode,
live_pseudos_reg_renumber[conflict_regno]);
if (hard_reg_set_subset_p (reg_class_contents[rclass],
conflict_set))
return -1;
}
{
conflict_hr = live_pseudos_reg_renumber[conflict_regno];
if (lra_reg_val_equal_p (conflict_regno, val, offset))
{
conflict_hr = live_pseudos_reg_renumber[conflict_regno];
nregs = (hard_regno_nregs[conflict_hr]
[lra_reg_info[conflict_regno].biggest_mode]);
/* Remember about multi-register pseudos. For example, 2
hard register pseudos can start on the same hard register
but can not start on HR and HR+1/HR-1. */
for (hr = conflict_hr + 1;
hr < FIRST_PSEUDO_REGISTER && hr < conflict_hr + nregs;
hr++)
SET_HARD_REG_BIT (impossible_start_hard_regs, hr);
for (hr = conflict_hr - 1;
hr >= 0 && hr + hard_regno_nregs[hr][biggest_mode] > conflict_hr;
hr--)
SET_HARD_REG_BIT (impossible_start_hard_regs, hr);
}
else
{
enum machine_mode biggest_conflict_mode
= lra_reg_info[conflict_regno].biggest_mode;
int biggest_conflict_nregs
= hard_regno_nregs[conflict_hr][biggest_conflict_mode];
nregs_diff = (biggest_conflict_nregs
- (hard_regno_nregs
[conflict_hr]
[PSEUDO_REGNO_MODE (conflict_regno)]));
add_to_hard_reg_set (&conflict_set,
biggest_conflict_mode,
conflict_hr
- (WORDS_BIG_ENDIAN ? nregs_diff : 0));
if (hard_reg_set_subset_p (reg_class_contents[rclass],
conflict_set))
return -1;
}
}
EXECUTE_IF_SET_IN_SPARSESET (conflict_reload_and_inheritance_pseudos,
conflict_regno)
if (!lra_reg_val_equal_p (conflict_regno, val, offset))

6
gcc/testsuite/ChangeLog
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@ -1,3 +1,9 @@
2017-01-27 Vladimir Makarov <vmakarov@redhat.com>
PR target/79131
* gcc.target/arm/pr79131.c: Rename to gcc.target/arm/pr79131-1.c.
* gcc.target/arm/pr79131-2.c: New.
2017-01-27 Bill Schmidt <wschmidt@linux.vnet.ibm.com>
PR target/65484

0
gcc/testsuite/gcc.target/arm/pr79131.c → gcc/testsuite/gcc.target/arm/pr79131-1.c
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17
gcc/testsuite/gcc.target/arm/pr79131-2.c Normal file
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@ -0,0 +1,17 @@
/* { dg-do compile } */
/* { dg-options "-O2 -mbig-endian" } */
struct nilfs_segment_usage {
int su_flags;
} a;
enum { NILFS_SEGMENT_USAGE_ACTIVE, NILFS_SEGMENT_USAGE_DIRTY } fn1();
int b;
void fn2(int *, long long);
void fn3() {
int c, d;
struct nilfs_segment_usage e = a;
fn1();
c = e.su_flags & 1 << NILFS_SEGMENT_USAGE_DIRTY;
d = c;
fn2(&b, d ? -1 : 0);
}