diff options
| author | Vladimir Makarov <vmakarov@redhat.com> | 2018-03-09 16:00:36 +0000 |
|---|---|---|
| committer | Vladimir Makarov <vmakarov@gcc.gnu.org> | 2018-03-09 16:00:36 +0000 |
| commit | e0cd6bc00966de0a3a77b642f9507d9c83b398f1 (patch) | |
| tree | de7bad1e1e9a7a1d01900aa85dc8de1b2e98279f /gcc/lra-int.h | |
| parent | a4017ff7722614f749a0d5eab315e929b2035e8a (diff) | |
re PR target/83712 ("Unable to find a register to spill" when compiling for thumb1)
2018-03-09 Vladimir Makarov <vmakarov@redhat.com>
PR target/83712
* lra-assigns.c (assign_by_spills): Return a flag of reload
assignment failure. Do not process the reload assignment
failures. Do not spill other reload pseudos if they has the same
reg class.
(lra_assign): Add a return arg. Set up from the result of
assign_by_spills call.
(find_reload_regno_insns, lra_split_hard_reg_for): New functions.
* lra-constraints.c (split_reg): Add a new arg. Use it instead of
usage_insns if it is not NULL.
(spill_hard_reg_in_range): New function.
(split_if_necessary, inherit_in_ebb): Pass a new arg to split_reg.
* lra-int.h (spill_hard_reg_in_range, lra_split_hard_reg_for): New
function prototypes.
(lra_assign): Change prototype.
* lra.c (lra): Add code to deal with fails by splitting hard reg
live ranges.
2018-03-09 Vladimir Makarov <vmakarov@redhat.com>
PR target/83712
* gcc.target/arm/pr83712.c: New.
From-SVN: r258390
Diffstat (limited to 'gcc/lra-int.h')
| -rw-r--r-- | gcc/lra-int.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/gcc/lra-int.h b/gcc/lra-int.h index 509e29ec4b8..8a665625830 100644 --- a/gcc/lra-int.h +++ b/gcc/lra-int.h @@ -356,6 +356,7 @@ extern bool lra_constrain_insn (rtx_insn *); extern bool lra_constraints (bool); extern void lra_constraints_init (void); extern void lra_constraints_finish (void); +extern bool spill_hard_reg_in_range (int, enum reg_class, rtx_insn *, rtx_insn *); extern void lra_inheritance (void); extern bool lra_undo_inheritance (void); @@ -389,8 +390,8 @@ extern void lra_setup_reload_pseudo_preferenced_hard_reg (int, int, int); extern int lra_assignment_iter; extern int lra_assignment_iter_after_spill; extern void lra_setup_reg_renumber (int, int, bool); -extern bool lra_assign (void); - +extern bool lra_assign (bool &); +extern void lra_split_hard_reg_for (void); /* lra-coalesce.c: */ |