re PR rtl-optimization/32283 (Missed induction variable optimization)
PR rtl-optimization/32283
* tree-ssa-loop-niter.c (scev_probably_wraps_p): Use type of the base
of the induction variable to decide whether it may wrap.
* tree-ssa-loop-ivopts.c (rewrite_use_compare): Emit the initialization
of the bound before the loop.
* simplify-rtx.c (simplify_binary_operation_1): Add two simplifications
regarding AND.
(simplify_plus_minus): Only fail if no simplification is possible.
* loop-iv.c (simple_rhs_p): Consider reg + reg and reg << cst simple.