A program may consist of multiple compilation units, and multiple array
access operations may exist within the program.
In SIMPLE_IPA_PASS, I want to check whether the index is consistent during
two array accesses: During the first pass through all functions, traverse
all gimples, record each array access operation, and store its
corresponding {Function *, index} into a hash_set. During the second pass
through all functions, when encountering the array access operation we wish
to process, search for {Function *, index} in the hash_set.
Converting SIMPLE_IPA_PASS to IPA_PASS presents challenges.
Since Function * is a pointer, direct transfer is meaningless. index is an
ssa_name, so direct transfer is also impossible. My question is: Since the
above approach fails, if I encounter an array access operation during the
wpa phase, how should I determine whether there exists another array access
operation within the same function that shares the same index?
Thanks.ywgrit. Richard Biener <[email protected]> 于2025年10月13日周一 14:42写道： > On Sat, Oct 11, 2025 at 10:32 AM ywgrit via Gcc <[email protected]> wrote: > > > > I used the functions stream_write_tree/stream_read_tree in lto. If tree > > contains ssa_name, then stream_read_tree will generate ice: cfun is null > in > > wpa, so (*SSANAMES (cfun))[ix] will break the program. How to write/read > > tree contains ssa_name in lto, e.g., wpa phase? > > You shouldn't - you have to abstract from this somehow as during WPA phase > a SSA name doesn't make "sense". That said, you have to elaborate a bit on > what you are trying to do. > > Richard. > > > Thanks. > > > > ywgrit. >
