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| author | Tamar Christina <tamar.christina@arm.com> | 2022-08-05 14:53:28 +0100 |
|---|---|---|
| committer | Tamar Christina <tamar.christina@arm.com> | 2022-08-05 14:53:28 +0100 |
| commit | 1878ab3650d8c646a4db364df388adaec2a29870 (patch) | |
| tree | d85b7dcab1bfe5855d7b534d2aec34bd217da440 /gcc/tree-ssa-phiopt.cc | |
| parent | 6ca948264d67d4079b5868342257aee79259e301 (diff) | |
| download | gcc-1878ab3650d8c646a4db364df388adaec2a29870.zip gcc-1878ab3650d8c646a4db364df388adaec2a29870.tar.gz gcc-1878ab3650d8c646a4db364df388adaec2a29870.tar.bz2 | |
middle-end: Guard value_replacement and store_elim from seeing diamonds.
This excludes value_replacement and store_elim from diamonds as they don't
handle the form properly.
gcc/ChangeLog:
PR middle-end/106534
* tree-ssa-phiopt.cc (tree_ssa_phiopt_worker): Guard the
value_replacement and store_elim from diamonds.
Diffstat (limited to 'gcc/tree-ssa-phiopt.cc')
| -rw-r--r-- | gcc/tree-ssa-phiopt.cc | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/gcc/tree-ssa-phiopt.cc b/gcc/tree-ssa-phiopt.cc index ef4c0b7..0191b9c 100644 --- a/gcc/tree-ssa-phiopt.cc +++ b/gcc/tree-ssa-phiopt.cc @@ -283,7 +283,7 @@ tree_ssa_phiopt_worker (bool do_store_elim, bool do_hoist_loads, bool early_p) || (e1->flags & EDGE_FALLTHRU) == 0) continue; - if (do_store_elim) + if (do_store_elim && !diamond_p) { /* Also make sure that bb1 only have one predecessor and that it is bb. */ @@ -310,7 +310,7 @@ tree_ssa_phiopt_worker (bool do_store_elim, bool do_hoist_loads, bool early_p) /* Value replacement can work with more than one PHI so try that first. */ - if (!early_p) + if (!early_p && !diamond_p) for (gsi = gsi_start (phis); !gsi_end_p (gsi); gsi_next (&gsi)) { phi = as_a <gphi *> (gsi_stmt (gsi)); |