https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94724
--- Comment #3 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:bca558de2a24b2a78c6a321d6cec384e07759d77 commit r10-7921-gbca558de2a24b2a78c6a321d6cec384e07759d77 Author: Jakub Jelinek <ja...@redhat.com> Date: Thu Apr 23 21:11:36 2020 +0200 tree: Fix up get_narrower [PR94724] In the recent get_narrower change, I wanted it to be efficient and avoid recursion if there are many nested COMPOUND_EXPRs. That builds the COMPOUND_EXPR nest with the right arguments, but as build2_loc computes some flags like TREE_SIDE_EFFECTS, TREE_CONSTANT and TREE_READONLY, when it is called with something that will not be the argument in the end, those flags are computed incorrectly. So, this patch instead uses an auto_vec and builds them in the reverse order so when they are built, they are built with the correct operands. 2020-04-23 Jakub Jelinek <ja...@redhat.com> PR middle-end/94724 * tree.c (get_narrower): Instead of creating COMPOUND_EXPRs temporarily with non-final second operand and updating it later, push COMPOUND_EXPRs into a vector and process it in reverse, creating COMPOUND_EXPRs with the final operands. * gcc.c-torture/execute/pr94724.c: New test.
