analyzer: avoid usage of TYPE_PRECISION on vector types [PR110455]

gcc/analyzer/ChangeLog:
	PR analyzer/110455
	* region-model.cc (region_model::get_gassign_result): Only check
	for bad shift counts when dealing with an integral type.

gcc/testsuite/ChangeLog:
	PR analyzer/110455
	* gcc.dg/analyzer/pr110455.c: New test.

Signed-off-by: David Malcolm <dmalcolm@redhat.com>
This commit is contained in:
David Malcolm 2023-07-20 20:24:10 -04:00
parent 7006f02bbc
commit a4913a19d2
2 changed files with 9 additions and 1 deletions

View file

@ -860,7 +860,8 @@ region_model::get_gassign_result (const gassign *assign,
or by greater than or equal to the number of bits that exist in
the operand." */
if (const tree rhs2_cst = rhs2_sval->maybe_get_constant ())
if (TREE_CODE (rhs2_cst) == INTEGER_CST)
if (TREE_CODE (rhs2_cst) == INTEGER_CST
&& INTEGRAL_TYPE_P (TREE_TYPE (rhs1)))
{
if (tree_int_cst_sgn (rhs2_cst) < 0)
ctxt->warn

View file

@ -0,0 +1,7 @@
int __attribute__((__vector_size__ (4))) v;
void
foo (void)
{
v | v << 1;
}