diff --git a/gcc/ipa-prop.c b/gcc/ipa-prop.c index 353b638..3fe60d6 100644 --- a/gcc/ipa-prop.c +++ b/gcc/ipa-prop.c @@ -1670,9 +1670,26 @@ ipa_compute_jump_functions_for_edge (struct ipa_func_body_info *fbi, if (POINTER_TYPE_P (TREE_TYPE (arg))) { - if (TREE_CODE (arg) == SSA_NAME - && param_type - && get_ptr_nonnull (arg)) + bool addr_nonzero = false; + + if (TREE_CODE (arg) == ADDR_EXPR) + { + /* See if the ADDR_EXPR is nonnull. */ + tree base = get_base_address (TREE_OPERAND (arg, 0)); + + if (TREE_CODE (base) == CONST_DECL + || TREE_CODE (base) == PARM_DECL + || TREE_CODE (base) == RESULT_DECL) + addr_nonzero = true; + else if (VAR_P (base)) + addr_nonzero = ! is_global_var (base) + || (varpool_node::get (base)->nonzero_address ()); + } + + if ((TREE_CODE (arg) == SSA_NAME + && param_type + && get_ptr_nonnull (arg)) + || addr_nonzero) { jfunc->vr_known = true; jfunc->m_vr.type = VR_ANTI_RANGE; diff --git a/gcc/testsuite/gcc.dg/ipa/vrp5.c b/gcc/testsuite/gcc.dg/ipa/vrp5.c index e69de29..571798d 100644 --- a/gcc/testsuite/gcc.dg/ipa/vrp5.c +++ b/gcc/testsuite/gcc.dg/ipa/vrp5.c @@ -0,0 +1,34 @@ +/* { dg-do compile } */ +/* { dg-options "-O2 -fdump-ipa-cp-details -fdump-tree-vrp1" } */ + +static __attribute__((noinline, noclone)) +int foo (int *p) +{ + if (!p) + return 0; + *p = 1; +} + +struct st +{ + int a; + int b; +}; + +int arr1[10]; +int a; +int bar (struct st *s) +{ + int arr2[10]; + int b; + if (!s) + return 0; + foo (&s->a); + foo (&a); + foo (&b); + foo (&arr1[1]); + foo (&arr2[1]); +} + +/* { dg-final { scan-ipa-dump "Setting nonnull for 0" "cp" } } */ +/* { dg-final { scan-tree-dump-times "if" 1 "vrp1" } } */ diff --git a/gcc/testsuite/gcc.dg/ipa/vrp6.c b/gcc/testsuite/gcc.dg/ipa/vrp6.c index e69de29..971db44 100644 --- a/gcc/testsuite/gcc.dg/ipa/vrp6.c +++ b/gcc/testsuite/gcc.dg/ipa/vrp6.c @@ -0,0 +1,34 @@ +/* { dg-do compile } */ +/* { dg-options "-O2 -fdump-ipa-cp-details -fdump-tree-vrp1" } */ + +static __attribute__((noinline, noclone)) +int foo (int *p) +{ + if (!p) + return 0; + *p = 1; +} + +struct st +{ + int a; + int b; +}; + +struct st s2; +int a; +int bar (struct st *s) +{ + struct st s3; + int b; + if (!s) + return 0; + foo (&s->a); + foo (&s2.a); + foo (&s3.a); + foo (&a); + foo (&b); +} + +/* { dg-final { scan-ipa-dump "Setting nonnull for 0" "cp" } } */ +/* { dg-final { scan-tree-dump-times "if" 1 "vrp1" } } */