diff options
| -rw-r--r-- | gcc/gimple-loop-jam.cc | 10 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/torture/pr106521.c | 17 |
2 files changed, 26 insertions, 1 deletions
diff --git a/gcc/gimple-loop-jam.cc b/gcc/gimple-loop-jam.cc index 8cde6c7..a8a57d3 100644 --- a/gcc/gimple-loop-jam.cc +++ b/gcc/gimple-loop-jam.cc @@ -39,6 +39,7 @@ along with GCC; see the file COPYING3. If not see #include "tree-ssa-loop-ivopts.h" #include "tree-vectorizer.h" #include "tree-ssa-sccvn.h" +#include "tree-cfgcleanup.h" /* Unroll and Jam transformation @@ -609,9 +610,16 @@ tree_loop_unroll_and_jam (void) if (todo) { + free_dominance_info (CDI_DOMINATORS); + /* We need to cleanup the CFG first since otherwise SSA form can + be not up-to-date from the VN run. */ + if (todo & TODO_cleanup_cfg) + { + cleanup_tree_cfg (); + todo &= ~TODO_cleanup_cfg; + } rewrite_into_loop_closed_ssa (NULL, 0); scev_reset (); - free_dominance_info (CDI_DOMINATORS); } return todo; } diff --git a/gcc/testsuite/gcc.dg/torture/pr106521.c b/gcc/testsuite/gcc.dg/torture/pr106521.c new file mode 100644 index 0000000..05c8ce5 --- /dev/null +++ b/gcc/testsuite/gcc.dg/torture/pr106521.c @@ -0,0 +1,17 @@ +/* { dg-do compile } */ +/* { dg-additional-options "-floop-unroll-and-jam --param unroll-jam-min-percent=0" } */ + +short a, b, e; +volatile long c; +long d; +int main() { + for (; d; d++) { + long g = a = 1; + for (; a; a++) { + g++; + c; + } + g && (b = e); + } + return 0; +} |