https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60473
--- Comment #2 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Roger Sayle <sa...@gcc.gnu.org>: https://gcc.gnu.org/g:76eafcc395d2bcd4147cb1ba1a8aff321571402f commit r11-2551-g76eafcc395d2bcd4147cb1ba1a8aff321571402f Author: Roger Sayle <ro...@nextmovesoftware.com> Date: Tue Aug 4 16:56:06 2020 +0100 Test case for PR rtl-optimization/60473 PR rtl-optimization/60473 is code quality regression that has been cured by improvements to register allocation. For the function in the test case, GCC 4.4, 4.5 and 4.6 generated very poor code requiring two mov instructions, and GCC 4.7 and 4.8 (when the PR was filed) produced better but still poor code with one mov instruction. Since GCC 4.9 (including current mainline), it generates optimal code with no mov instructions, matching what used to be generated in GCC 4.1. 2020-08-04 Roger Sayle <ro...@nextmovesoftware.com> gcc/testsuite/ChangeLog PR rtl-optimization/60473 * gcc.target/i386/pr60473.c: New test.
