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| author | Jakub Jelinek <jakub@redhat.com> | 2011-01-21 16:15:40 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2011-01-21 16:15:40 +0100 |
| commit | 3ffe07e16cbba3f690198801696ec4251700903a (patch) | |
| tree | 7e0bdfc118ad184dc374b008a10de7c5da9344bc /gcc/tree-eh.c | |
| parent | 1c7d0b34dcb5810c6da08a672af1ab7d1499fe1b (diff) | |
| download | gcc-3ffe07e16cbba3f690198801696ec4251700903a.zip gcc-3ffe07e16cbba3f690198801696ec4251700903a.tar.gz gcc-3ffe07e16cbba3f690198801696ec4251700903a.tar.bz2 | |
re PR tree-optimization/47355 (ICE: verify_ssa failed with -O2 -fipa-cp-clone)
PR tree-optimization/47355
* tree-eh.c (cleanup_empty_eh_merge_phis): Give up if
NOP has non-debug uses beyond PHIs in new_bb.
* g++.dg/opt/pr47355.C: New test.
From-SVN: r169094
Diffstat (limited to 'gcc/tree-eh.c')
| -rw-r--r-- | gcc/tree-eh.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/gcc/tree-eh.c b/gcc/tree-eh.c index 65d0ff2..f189b9b 100644 --- a/gcc/tree-eh.c +++ b/gcc/tree-eh.c @@ -3552,6 +3552,20 @@ cleanup_empty_eh_merge_phis (basic_block new_bb, basic_block old_bb, /* If we did find the corresponding PHI, copy those inputs. */ if (ophi) { + /* If NOP is used somewhere else beyond phis in new_bb, give up. */ + if (!has_single_use (nop)) + { + imm_use_iterator imm_iter; + use_operand_p use_p; + + FOR_EACH_IMM_USE_FAST (use_p, imm_iter, nop) + { + if (!gimple_debug_bind_p (USE_STMT (use_p)) + && (gimple_code (USE_STMT (use_p)) != GIMPLE_PHI + || gimple_bb (USE_STMT (use_p)) != new_bb)) + goto fail; + } + } bitmap_set_bit (ophi_handled, SSA_NAME_VERSION (nop)); FOR_EACH_EDGE (e, ei, old_bb->preds) { |