diff options
| author | Richard Henderson <rth@redhat.com> | 2005-06-16 17:56:07 -0700 |
|---|---|---|
| committer | Richard Henderson <rth@gcc.gnu.org> | 2005-06-16 17:56:07 -0700 |
| commit | fbe7e2f5049874ae13b1366b69f79a1a6766b9b2 (patch) | |
| tree | 90d35f461b3e1c2cf5dbcd8e239a2a2aeb507817 /gcc/tree-complex.c | |
| parent | 73194ef6602284f15e4befb91a06242282ba68cd (diff) | |
| download | gcc-fbe7e2f5049874ae13b1366b69f79a1a6766b9b2.zip gcc-fbe7e2f5049874ae13b1366b69f79a1a6766b9b2.tar.gz gcc-fbe7e2f5049874ae13b1366b69f79a1a6766b9b2.tar.bz2 | |
re PR tree-optimization/22022 (ACATS ICE cxg1002 tree_split_edge, at tree-cfg.c:3025)
PR tree-opt/22022
* tree-complex.c (update_phi_components): Avoid no-op moves.
From-SVN: r101121
Diffstat (limited to 'gcc/tree-complex.c')
| -rw-r--r-- | gcc/tree-complex.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/gcc/tree-complex.c b/gcc/tree-complex.c index a4c7329..a3470b1 100644 --- a/gcc/tree-complex.c +++ b/gcc/tree-complex.c @@ -577,6 +577,12 @@ update_phi_components (basic_block bb) tree arg = PHI_ARG_DEF (phi, i); tree r, i; + /* Avoid no-op assignments. This also prevents insertting stmts + onto abnormal edges, assuming the PHI isn't already broken. */ + if (TREE_CODE (arg) == SSA_NAME + && SSA_NAME_VAR (arg) == SSA_NAME_VAR (lhs)) + continue; + r = extract_component (NULL, arg, 0, false); i = extract_component (NULL, arg, 1, false); update_complex_components_on_edge (e, NULL, lhs, r, i); |