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| author | Andrew Pinski <apinski@marvell.com> | 2023-04-09 22:47:50 +0000 |
|---|---|---|
| committer | Andrew Pinski <apinski@marvell.com> | 2023-04-24 08:50:07 -0700 |
| commit | a2339e0fe9dbefdeca49a8105c7a547231c02d34 (patch) | |
| tree | 98b15e9e775762052e5eba88b6bace06dc4022bb /gcc/value-range.h | |
| parent | 245753249c595af95a811ddb0fe572d93a5dae72 (diff) | |
| download | gcc-a2339e0fe9dbefdeca49a8105c7a547231c02d34.zip gcc-a2339e0fe9dbefdeca49a8105c7a547231c02d34.tar.gz gcc-a2339e0fe9dbefdeca49a8105c7a547231c02d34.tar.bz2 | |
PHIOPT: Ignore predicates for match-and-simplify phi-opt
This fixes a missed optimization where early phi-opt would
not work when there was predicates. The easiest fix is
to change empty_bb_or_one_feeding_into_p to ignore those
statements while checking for only feeding statement.
Note phi-opt-23.c and phi-opt-24.c still fail as we don't handle
diamond form in match_and_simplify phiopt yet.
OK? Bootstrapped and tested on x86_64-linux-gnu with no regressions.
gcc/ChangeLog:
* tree-ssa-phiopt.cc (empty_bb_or_one_feeding_into_p):
Instead of calling last_and_only_stmt, look for the last statement
manually.
gcc/testsuite/ChangeLog:
* gcc.dg/tree-ssa/ssa-ifcombine-13.c: Add -fno-ssa-phiopt.
Diffstat (limited to 'gcc/value-range.h')
0 files changed, 0 insertions, 0 deletions