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| author | Andrew Pinski <andrew.pinski@oss.qualcomm.com> | 2025-12-06 01:11:29 -0800 |
|---|---|---|
| committer | Andrew Pinski <andrew.pinski@oss.qualcomm.com> | 2025-12-08 14:22:25 -0800 |
| commit | fae0c626250563c1619cc10c6af18a0c4cae5a97 (patch) | |
| tree | eccf369a57e057ddc6f4a1296b3386aba6c00df4 /gcc/ada/rtinit.c | |
| parent | 8e9d923a932e691030d0a0e0adbc0574d5b18350 (diff) | |
| download | gcc-fae0c626250563c1619cc10c6af18a0c4cae5a97.zip gcc-fae0c626250563c1619cc10c6af18a0c4cae5a97.tar.gz gcc-fae0c626250563c1619cc10c6af18a0c4cae5a97.tar.bz2 | |
final_cleanup: Call make_forwarders_with_degenerate_phis [PR46555]
This fixes a regression introduced with r16-5258-g1d8e2d51e5c5cb.
With GCC 12+, we would not merge forwarders (with phis, vops included),
this meant that after the last cddce, degenerate phis would stay not
merged which allowed for better expansion. Now after my patch, the forwarder
block would be removed and get worse expansion. This fixes the problem
by creating the forwarder blocks in "optimized" and no other cleanupcfg
is called afterwards.
Oh this also fixes the problem at -O1 which was missed because the agressive
version of dce was not done at -O1.
Bootstrapped and tested on x86_64-linux-gnu.
PR tree-optimization/46555
gcc/ChangeLog:
* tree-cfgcleanup.cc (execute_cleanup_cfg_post_optimizing):
Don't set todo to include cleanupcfg; do it manually.
Call make_forwarders_with_degenerate_phis if optimizing.
gcc/testsuite/ChangeLog:
* gcc.dg/tree-ssa/pr46555.c: New test.
Signed-off-by: Andrew Pinski <andrew.pinski@oss.qualcomm.com>
Diffstat (limited to 'gcc/ada/rtinit.c')
0 files changed, 0 insertions, 0 deletions