Do not clear bb->aux in duplicate_loop_body_to_header_edge
Commit Message
duplicate_loop_body_to_header_edge clears bb->aux which is not wanted
by a new use in loop unswitching. The clearing was introduced with
r0-69110-g6580ee7781f903 and it seems accidentially so.
Bootstrapped on x86_64-unknown-linux-gnu, testing in progress.
2022-05-17 Richard Biener <rguenther@suse.de>
* cfgloopmanip.cc (duplicate_loop_body_to_header_edge): Do
not clear bb->aux of the copied blocks.
---
gcc/cfgloopmanip.cc | 1 -
1 file changed, 1 deletion(-)
@@ -1351,7 +1351,6 @@ duplicate_loop_body_to_header_edge (class loop *loop, edge e,
unsigned j;
bb = bbs[i];
- bb->aux = 0;
auto_vec<basic_block> dom_bbs = get_dominated_by (CDI_DOMINATORS, bb);
FOR_EACH_VEC_ELT (dom_bbs, j, dominated)