Check is_gimple_assign before gimple_assign_rhs_code.
gcc/ChangeLog:
PR target/103682
* tree-ssa-ccp.c (optimize_atomic_bit_test_and): Check
is_gimple_assign before gimple_assign_rhs_code.
gcc/testsuite/ChangeLog:
* gcc.c-torture/compile/pr103682.c: New test.
--- /dev/null
+int bug(unsigned *ready, unsigned u) {
+ return __atomic_fetch_and (ready, ~u, 0) & u;
+}
g = SSA_NAME_DEF_STMT (mask);
}
- rhs_code = gimple_assign_rhs_code (g);
- if (rhs_code != LSHIFT_EXPR
+ if (!is_gimple_assign (g)
+ || gimple_assign_rhs_code (g) != LSHIFT_EXPR
|| !integer_onep (gimple_assign_rhs1 (g)))
return;
bit = gimple_assign_rhs2 (g);