https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94148
Bug ID: 94148
Summary: The DF framework uses bb->aux, which is for passes
only
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: segher at gcc dot gnu.org
Target Milestone: ---
df-core.c:df_worklist_dataflow_doublequeue uses bb->aux, clobbering it,
while that field is documented as
/* Auxiliary info specific to a pass. */
PTR GTY ((skip (""))) aux;
and some passes that do use DF also use bb->aux. This gives problems
with overlapping lifetimes.
This blocks fixing PR94042 properly.
