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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, 4 insertions, 3 deletions
diff --git a/gcc/tree-ssa-loop-niter.c b/gcc/tree-ssa-loop-niter.c index b879b9e..496b3f3 100644 --- a/gcc/tree-ssa-loop-niter.c +++ b/gcc/tree-ssa-loop-niter.c @@ -419,9 +419,10 @@ number_of_iterations_cond (tree type, tree base0, tree step0, d = EXEC_BINARY (LSHIFT_EXPR, niter_type, build_int_cst_type (niter_type, 1), bits); s = EXEC_BINARY (RSHIFT_EXPR, niter_type, step0, bits); - bound = EXEC_BINARY (RSHIFT_EXPR, niter_type, - build_int_cst (niter_type, -1), - bits); + + bound = build_low_bits_mask (niter_type, + (TYPE_PRECISION (niter_type) + - tree_low_cst (bits, 1))); assumption = fold (build2 (FLOOR_MOD_EXPR, niter_type, base1, d)); assumption = fold (build2 (EQ_EXPR, boolean_type_node, |