From 09684c53bca7dad47d36875b359e83551f9015fd Mon Sep 17 00:00:00 2001 From: Uros Bizjak Date: Sun, 16 Feb 2025 22:01:27 +0100 Subject: middle-end: Fixup constant integers when expanding __builtin_crc [PR118288] Constant integers with MSB set have to be represented as corresponding signed integers. Use gen_int_mode to emit them in the correct way. PR middle-end/118288 gcc/ChangeLog: * builtins.cc (expand_builtin_crc_table_based): Use gen_int_mode to emit constant integers with MSB set. gcc/testsuite/ChangeLog: * gcc.dg/pr118288.c: New test. --- gcc/builtins.cc | 3 +++ 1 file changed, 3 insertions(+) (limited to 'gcc/builtins.cc') diff --git a/gcc/builtins.cc b/gcc/builtins.cc index 468bd65..c884103 100644 --- a/gcc/builtins.cc +++ b/gcc/builtins.cc @@ -7803,6 +7803,9 @@ expand_builtin_crc_table_based (internal_fn fn, scalar_mode crc_mode, gcc_assert (TREE_CODE (rhs3) == INTEGER_CST); rtx op3 = gen_int_mode (TREE_INT_CST_LOW (rhs3), crc_mode); + if (CONST_INT_P (op2)) + op2 = gen_int_mode (INTVAL (op2), crc_mode); + if (fn == IFN_CRC) expand_crc_table_based (target, op1, op2, op3, data_mode); else -- cgit v1.1