The following patch permits to compile last 3 test cases on
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79131
The patch was successfully bootstrapped and tested on x86-64.
Committed as rev. 244989.
Index: ChangeLog
===================================================================
--- ChangeLog (revision 244987)
+++ ChangeLog (working copy)
@@ -1,3 +1,9 @@
+2017-01-27 Vladimir Makarov <vmaka...@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.ch...@arm.com>
PR rtl-optimization/78559
Index: testsuite/ChangeLog
===================================================================
--- testsuite/ChangeLog (revision 244987)
+++ testsuite/ChangeLog (working copy)
@@ -1,3 +1,9 @@
+2017-01-27 Vladimir Makarov <vmaka...@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 <wschm...@linux.vnet.ibm.com>
PR target/65484
Index: lra-assigns.c
===================================================================
--- lra-assigns.c (revision 244942)
+++ lra-assigns.c (working copy)
@@ -564,32 +564,45 @@ find_hard_regno_for_1 (int regno, int *c
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))
Index: testsuite/gcc.target/arm/pr79131-2.c
===================================================================
--- testsuite/gcc.target/arm/pr79131-2.c (revision 0)
+++ testsuite/gcc.target/arm/pr79131-2.c (working copy)
@@ -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);
+}
Index: testsuite/gcc.target/arm/pr79131.c
===================================================================
--- testsuite/gcc.target/arm/pr79131.c (revision 244595)
+++ testsuite/gcc.target/arm/pr79131.c (working copy)
@@ -1,16 +0,0 @@
-/* { dg-do compile } */
-/* { dg-options "-O2 -mbig-endian" } */
-
-long long a;
-enum { NILFS_SEGMENT_USAGE_ACTIVE, NILFS_SEGMENT_USAGE_DIRTY } b;
-void nilfs_sufile_mod_counter(long long p1) {
- long c = p1;
- unsigned d = __builtin_bswap64(a);
- a = __builtin_bswap64(d + c);
-}
-void nilfs_sufile_do_free() {
- int e, f;
- e = __builtin_bswap32(b) & 1 << NILFS_SEGMENT_USAGE_DIRTY;
- f = e;
- nilfs_sufile_mod_counter(f ? -1 : 0);
-}
