gcc/
* ira-color.cc (update_costs_from_allocno): Check that allocno
is in the consideration_allocno_bitmap before dereferencing
ALLOCNO_COLOR_DATA (allocno).
---
This fixes the invalid memory access, but I'm not sure if that's
sufficient and there's no remaining higher level logical issue.
Regtested for target=xtensa-linux-uclibc, no new regressions.
gcc/ira-color.cc | 2 ++
1 file changed, 2 insertions(+)
diff --git a/gcc/ira-color.cc b/gcc/ira-color.cc
index 4a1a325e8e31..4527eab39bb7 100644
--- a/gcc/ira-color.cc
+++ b/gcc/ira-color.cc
@@ -1434,6 +1434,8 @@ update_costs_from_allocno (ira_allocno_t allocno, int
hard_regno,
if (another_allocno == from
|| (ALLOCNO_COLOR_DATA (another_allocno) != NULL
+ && bitmap_bit_p (consideration_allocno_bitmap,
+ ALLOCNO_NUM (allocno))
&& (ALLOCNO_COLOR_DATA (allocno)->first_thread_allocno
!= ALLOCNO_COLOR_DATA
(another_allocno)->first_thread_allocno)))
continue;
--
2.30.2
