diff options
| author | vmakarov <vmakarov@138bc75d-0d04-0410-961f-82ee72b054a4> | 2017-01-26 17:08:12 +0000 |
|---|---|---|
| committer | vmakarov <vmakarov@138bc75d-0d04-0410-961f-82ee72b054a4> | 2017-01-26 17:08:12 +0000 |
| commit | 9628978f9de43546af531730a7c93eca787ba6e9 (patch) | |
| tree | 3ba1dafb844c589e276e71d31cb9c17653dce0c5 /gcc/lra-assigns.c | |
| parent | 6a5947929d528b6dca296759f4097cd354f5e9f1 (diff) | |
| download | gcc-9628978f9de43546af531730a7c93eca787ba6e9.tar.gz | |
2017-01-26 Vladimir Makarov <vmakarov@redhat.com>
PR target/79131
* lra-assigns.c (setup_live_pseudos_and_spill_after_risky): Take
endianess for subregs into account.
* lra-constraints.c (lra_constraints): Do risky transformations
always on the first iteration.
* lra-lives.c (check_pseudos_live_through_calls): Add arg
last_call_used_reg_set.
(process_bb_lives): Define and use last_call_used_reg_set.
* lra.c (lra): Always continue after lra_constraints on the first
iteration.
2017-01-26 Vladimir Makarov <vmakarov@redhat.com>
PR target/79131
* gcc.target/arm/pr79131.c: New.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@244942 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/lra-assigns.c')
| -rw-r--r-- | gcc/lra-assigns.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/gcc/lra-assigns.c b/gcc/lra-assigns.c index 8e21a497f0a..74a3195c4db 100644 --- a/gcc/lra-assigns.c +++ b/gcc/lra-assigns.c @@ -1179,9 +1179,19 @@ setup_live_pseudos_and_spill_after_risky_transforms (bitmap /* If it is multi-register pseudos they should start on the same hard register. */ || hard_regno != reg_renumber[conflict_regno]) - add_to_hard_reg_set (&conflict_set, - lra_reg_info[conflict_regno].biggest_mode, - reg_renumber[conflict_regno]); + { + int conflict_hard_regno = reg_renumber[conflict_regno]; + machine_mode biggest_mode = lra_reg_info[conflict_regno].biggest_mode; + int biggest_nregs = hard_regno_nregs[conflict_hard_regno][biggest_mode]; + int nregs_diff = (biggest_nregs + - (hard_regno_nregs + [conflict_hard_regno] + [PSEUDO_REGNO_MODE (conflict_regno)])); + add_to_hard_reg_set (&conflict_set, + biggest_mode, + conflict_hard_regno + - (WORDS_BIG_ENDIAN ? nregs_diff : 0)); + } if (! overlaps_hard_reg_set_p (conflict_set, mode, hard_regno)) { update_lives (regno, false); |