https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110531
Bug ID: 110531
Summary: Vect: slp_done_for_suggested_uf is not initialized in
tree-vect-loop.cc
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: hliu at amperecomputing dot com
Target Milestone: ---
This seems an obvious bug in tree-vect-loop.cc:
(1) This var is declared (but not initialized) and used in function
vect_analyze_loop_1:
bool slp_done_for_suggested_uf; <---- Warning, this is not
initialized
/* Run the main analysis. */
opt_result res = vect_analyze_loop_2 (loop_vinfo, fatal,
&suggested_unroll_factor,
slp_done_for_suggested_uf);
(2) It is used before set in function vect_analyze_loop_2:
static opt_result
vect_analyze_loop_2 (loop_vec_info loop_vinfo, bool &fatal,
unsigned *suggested_unroll_factor,
bool& slp_done_for_suggested_uf)
...
bool slp = !applying_suggested_uf || slp_done_for_suggested_uf; <--- used
without initialized
...
slp_done_for_suggested_uf = slp;
I don't know the detail logic and wonder if it should be initialized as "true"
or "false" (probably it should be "false").
