diff --git a/gcc/testsuite/gcc.dg/torture/pr106971.c b/gcc/testsuite/gcc.dg/torture/pr106971.c new file mode 100644 index 00000000000..33f21056e62 --- /dev/null +++ b/gcc/testsuite/gcc.dg/torture/pr106971.c @@ -0,0 +1,12 @@ +/* { dg-do compile } */ + +void a() +{ + int b; + int c; + int d = (__INTPTR_TYPE__)a; + _Complex float *e = (_Complex float *)a; + for (;;) { + (*e += d) / b ?: 0; + } +} diff --git a/gcc/tree-ssa-alias.cc b/gcc/tree-ssa-alias.cc index 063f1893851..b1e7a2d5afc 100644 --- a/gcc/tree-ssa-alias.cc +++ b/gcc/tree-ssa-alias.cc @@ -2397,15 +2397,6 @@ refs_may_alias_p_2 (ao_ref *ref1, ao_ref *ref2, bool tbaa_p) || CONSTANT_CLASS_P (base2)) return false; - /* We can end up referring to code via function and label decls. - As we likely do not properly track code aliases conservatively - bail out. */ - if (TREE_CODE (base1) == FUNCTION_DECL - || TREE_CODE (base1) == LABEL_DECL - || TREE_CODE (base2) == FUNCTION_DECL - || TREE_CODE (base2) == LABEL_DECL) - return true; - /* Two volatile accesses always conflict. */ if (ref1->volatile_p && ref2->volatile_p) @@ -2432,6 +2423,15 @@ refs_may_alias_p_2 (ao_ref *ref1, ao_ref *ref2, bool tbaa_p) ref2ref, base2, offset2, max_size2, ref2->size); + /* We can end up referring to code via function and label decls. + As we likely do not properly track code aliases conservatively + bail out. */ + if (TREE_CODE (base1) == FUNCTION_DECL + || TREE_CODE (base1) == LABEL_DECL + || TREE_CODE (base2) == FUNCTION_DECL + || TREE_CODE (base2) == LABEL_DECL) + return true; + /* Handle restrict based accesses. ??? ao_ref_base strips inner MEM_REF [&decl], recover from that here. */