[Bug target/69827] [5 Regression] sincos not done

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69827

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
cygwin probably runs into the target hooks querying libc functionality

              switch (gimple_call_combined_fn (stmt))
                {
                CASE_CFN_COS:
                CASE_CFN_SIN:
                CASE_CFN_CEXPI:
                  /* Make sure we have either sincos or cexp.  */
                  if (!targetm.libc_has_function (function_c99_math_complex)
                      && !targetm.libc_has_function (function_sincos))
                    break;

                  arg = gimple_call_arg (stmt, 0);
                  if (TREE_CODE (arg) == SSA_NAME)
                    cfg_changed |= execute_cse_sincos_1 (arg);