diff options
| -rw-r--r-- | gcc/testsuite/gcc.dg/pr106519.c | 11 | ||||
| -rw-r--r-- | gcc/tree-ssa-phiopt.cc | 6 |
2 files changed, 15 insertions, 2 deletions
diff --git a/gcc/testsuite/gcc.dg/pr106519.c b/gcc/testsuite/gcc.dg/pr106519.c new file mode 100644 index 0000000..3d4662d --- /dev/null +++ b/gcc/testsuite/gcc.dg/pr106519.c @@ -0,0 +1,11 @@ +/* { dg-do compile } */ + +int bytestart, bytemem_0_0, modlookup_l_p; + +void +modlookup_l() { + long j; + while (modlookup_l_p) + while (bytestart && j && bytemem_0_0) + j = j + 1; +} diff --git a/gcc/tree-ssa-phiopt.cc b/gcc/tree-ssa-phiopt.cc index a8e55e0..ef4c0b7 100644 --- a/gcc/tree-ssa-phiopt.cc +++ b/gcc/tree-ssa-phiopt.cc @@ -269,7 +269,10 @@ tree_ssa_phiopt_worker (bool do_store_elim, bool do_hoist_loads, bool early_p) } else if (EDGE_SUCC (bb1, 0)->dest == EDGE_SUCC (bb2, 0)->dest && !empty_block_p (bb1)) - diamond_p = true; + { + diamond_p = true; + e2 = EDGE_SUCC (bb2, 0); + } else continue; @@ -324,7 +327,6 @@ tree_ssa_phiopt_worker (bool do_store_elim, bool do_hoist_loads, bool early_p) if (!candorest) continue; - e2 = diamond_p ? EDGE_SUCC (bb2, 0) : e2; phi = single_non_singleton_phi_for_edges (phis, e1, e2); if (!phi) continue; |