* tree-vrp.c (extract_range_from_binary_expr): For POINTER_PLUS_EXPR
with -fno-delete-null-pointer-checks, set_nonnull only if the pointer
is non-NULL and offset is known to have most significant bit clear.
* vr-values.c (vr_values::vrp_stmt_computes_nonzero): For ADDR_EXPR
of MEM_EXPR, return true if the MEM_EXPR has non-zero offset with
most significant bit clear. If offset does have most significant bit
set and -fno-delete-null-pointer-checks, don't return true even if
the base pointer is non-NULL.
* gcc.dg/tree-ssa/pr88367.c: New test.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@266878 138bc75d-0d04-0410-961f-82ee72b054a4
5 files changed