https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99517
--- Comment #7 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Jakub Jelinek <ja...@gcc.gnu.org>: https://gcc.gnu.org/g:070ab283d16d8e8e8bb70f9801aca347f008cbd0 commit r11-7618-g070ab283d16d8e8e8bb70f9801aca347f008cbd0 Author: Jakub Jelinek <ja...@redhat.com> Date: Thu Mar 11 10:59:18 2021 +0100 icf: Check return type of internal fn calls [PR99517] The following testcase is miscompiled, because IPA-ICF considers the two functions identical. They aren't, the types of the .VEC_CONVERT call lhs is different. But for calls to internal functions, there is no fntype nor callee with a function type to compare, so all we compare is just the ifn, arguments and some call flags. The following patch fixes it by checking the internal fn calls like e.g. gimple assignments where the type of the lhs is checked too. 2021-03-11 Jakub Jelinek <ja...@redhat.com> PR ipa/99517 * ipa-icf-gimple.c (func_checker::compare_gimple_call): For internal function calls with lhs fail if the lhs don't have compatible types. * gcc.target/i386/avx2-pr99517-1.c: New test. * gcc.target/i386/avx2-pr99517-2.c: New test.
