https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114415
--- Comment #6 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Vladimir Makarov <vmaka...@gcc.gnu.org>: https://gcc.gnu.org/g:a24476422ba311b83737cf8bdc5892a7fc7514eb commit r14-9793-ga24476422ba311b83737cf8bdc5892a7fc7514eb Author: Vladimir N. Makarov <vmaka...@redhat.com> Date: Thu Apr 4 16:04:04 2024 -0400 [PR114415][scheduler]: Fixing wrong code generation For the test case, the insn scheduler (working for live range shrinkage) moves insns modifying stack memory before an insn reserving the stack memory. Comments in the patch contains more details about the problem and its solution. gcc/ChangeLog: PR rtl-optimization/114415 * sched-deps.cc (add_insn_mem_dependence): Add memory check for mem argument. (sched_analyze_1): Treat stack pointer modification as memory read. (sched_analyze_2, sched_analyze_insn): Add memory guard for processing pending_read_mems. * sched-int.h (deps_desc): Add comment to pending_read_mems. gcc/testsuite/ChangeLog: PR rtl-optimization/114415 * gcc.target/i386/pr114415.c: New test.
