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| author | Tom de Vries <tom@codesourcery.com> | 2017-07-20 07:16:01 +0000 |
|---|---|---|
| committer | Tom de Vries <vries@gcc.gnu.org> | 2017-07-20 07:16:01 +0000 |
| commit | c9930ecd9c089bc2c9e82136280c9d2f494242bc (patch) | |
| tree | b2e828e725132ec617b56ff3cd925f6435ba89ae /gcc/gimple-ssa-isolate-paths.c | |
| parent | 2071f8f980cc0de02af3d7d7de201f4f189058ff (diff) | |
Fix phi arg location in find_implicit_erroneous_behavior
2017-07-20 Tom de Vries <tom@codesourcery.com>
PR tree-optimization/81489
* gimple-ssa-isolate-paths.c (find_implicit_erroneous_behavior): Move
read of phi arg location to before loop that modifies phi.
From-SVN: r250378
Diffstat (limited to 'gcc/gimple-ssa-isolate-paths.c')
| -rw-r--r-- | gcc/gimple-ssa-isolate-paths.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/gcc/gimple-ssa-isolate-paths.c b/gcc/gimple-ssa-isolate-paths.c index 7ad39b4e09b..fbc41057463 100644 --- a/gcc/gimple-ssa-isolate-paths.c +++ b/gcc/gimple-ssa-isolate-paths.c @@ -442,6 +442,8 @@ find_implicit_erroneous_behavior (void) if (!integer_zerop (op)) continue; + location_t phi_arg_loc = gimple_phi_arg_location (phi, i); + /* We've got a NULL PHI argument. Now see if the PHI's result is dereferenced within BB. */ FOR_EACH_IMM_USE_STMT (use_stmt, iter, lhs) @@ -454,7 +456,7 @@ find_implicit_erroneous_behavior (void) location_t loc = gimple_location (use_stmt) ? gimple_location (use_stmt) - : gimple_phi_arg_location (phi, i); + : phi_arg_loc; if (stmt_uses_name_in_undefined_way (use_stmt, lhs, loc)) { |