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Diffstat (limited to 'gcc/tree-ssa-loop-niter.c')
| -rw-r--r-- | gcc/tree-ssa-loop-niter.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/gcc/tree-ssa-loop-niter.c b/gcc/tree-ssa-loop-niter.c index 03588a0..f6fa2f7 100644 --- a/gcc/tree-ssa-loop-niter.c +++ b/gcc/tree-ssa-loop-niter.c @@ -2596,10 +2596,15 @@ number_of_iterations_popcount (loop_p loop, edge exit, niter->niter = iter; niter->assumptions = boolean_true_node; + if (adjust) - niter->may_be_zero = fold_build2 (EQ_EXPR, boolean_type_node, src, + { + tree may_be_zero = fold_build2 (EQ_EXPR, boolean_type_node, src, build_zero_cst (TREE_TYPE (src))); + niter->may_be_zero = + simplify_using_initial_conditions (loop, may_be_zero); + } else niter->may_be_zero = boolean_false_node; |