diff options
Diffstat (limited to 'gcc/tree-ssa-loop-manip.c')
| -rw-r--r-- | gcc/tree-ssa-loop-manip.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/gcc/tree-ssa-loop-manip.c b/gcc/tree-ssa-loop-manip.c index f16ec3f..ff8f899 100644 --- a/gcc/tree-ssa-loop-manip.c +++ b/gcc/tree-ssa-loop-manip.c @@ -54,6 +54,7 @@ create_iv (tree base, tree step, tree var, struct loop *loop, tree stmt, initial, step1, stmts; tree vb, va; enum tree_code incr_op = PLUS_EXPR; + edge pe = loop_preheader_edge (loop); if (!var) { @@ -92,6 +93,12 @@ create_iv (tree base, tree step, tree var, struct loop *loop, } } + /* Gimplify the step if necessary. We put the computations in front of the + loop (i.e. the step should be loop invariant). */ + step = force_gimple_operand (step, &stmts, true, var); + if (stmts) + bsi_insert_on_edge_immediate_loop (pe, stmts); + stmt = build2 (MODIFY_EXPR, void_type_node, va, build2 (incr_op, TREE_TYPE (base), vb, step)); @@ -103,11 +110,7 @@ create_iv (tree base, tree step, tree var, struct loop *loop, initial = force_gimple_operand (base, &stmts, true, var); if (stmts) - { - edge pe = loop_preheader_edge (loop); - - bsi_insert_on_edge_immediate_loop (pe, stmts); - } + bsi_insert_on_edge_immediate_loop (pe, stmts); stmt = create_phi_node (vb, loop->header); SSA_NAME_DEF_STMT (vb) = stmt; |