From eaaf77dd85c333b116111bb1ae6c080154a4e411 Mon Sep 17 00:00:00 2001 From: Richard Biener Date: Mon, 4 Apr 2022 10:20:05 +0200 Subject: [PATCH] middle-end/105140 - fix bogus recursion in fold_convertible_p fold_convertible_p expects an operand and a type to convert to but recurses with two vector component types. Fixed by allowing types instead of an operand as well. 2022-04-04 Richard Biener PR middle-end/105140 * fold-const.cc (fold_convertible_p): Allow a TYPE_P arg. * gcc.dg/pr105140.c: New testcase. --- gcc/fold-const.cc | 5 +++-- gcc/testsuite/gcc.dg/pr105140.c | 17 +++++++++++++++++ 2 files changed, 20 insertions(+), 2 deletions(-) create mode 100644 gcc/testsuite/gcc.dg/pr105140.c diff --git a/gcc/fold-const.cc b/gcc/fold-const.cc index b647e53..fb08fa1 100644 --- a/gcc/fold-const.cc +++ b/gcc/fold-const.cc @@ -2379,12 +2379,13 @@ build_zero_vector (tree type) return build_vector_from_val (type, t); } -/* Returns true, if ARG is convertible to TYPE using a NOP_EXPR. */ +/* Returns true, if ARG, an operand or a type, is convertible to TYPE + using a NOP_EXPR. */ bool fold_convertible_p (const_tree type, const_tree arg) { - tree orig = TREE_TYPE (arg); + const_tree orig = TYPE_P (arg) ? arg : TREE_TYPE (arg); if (type == orig) return true; diff --git a/gcc/testsuite/gcc.dg/pr105140.c b/gcc/testsuite/gcc.dg/pr105140.c new file mode 100644 index 0000000..14bff2f --- /dev/null +++ b/gcc/testsuite/gcc.dg/pr105140.c @@ -0,0 +1,17 @@ +/* { dg-do compile } */ +/* { dg-options "-Os -w -Wno-psabi" } */ + +typedef char __attribute__((__vector_size__ (16 * sizeof (char)))) U; +typedef int __attribute__((__vector_size__ (16 * sizeof (int)))) V; + +void bar (); + +bar (int i, int j, int k, V v) +{ +} + +void +foo (void) +{ + bar ((V){}, (V){}, (V){}, (U){}); +} -- 2.7.4