https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81736
--- Comment #11 from Aldy Hernandez <aldyh at gcc dot gnu.org> --- Author: aldyh Date: Wed Sep 13 16:49:48 2017 New Revision: 252388 URL: https://gcc.gnu.org/viewcvs?rev=252388&root=gcc&view=rev Log: i386: Don't use frame pointer without stack access When there is no stack access, there is no need to use frame pointer even if -fno-omit-frame-pointer is used and caller's frame pointer is unchanged. gcc/ PR target/81736 * config/i386/i386.c (ix86_finalize_stack_realign_flags): Renamed to ... (ix86_finalize_stack_frame_flags): This. Also clear frame_pointer_needed if -fno-omit-frame-pointer is used without stack access. (ix86_expand_prologue): Replace ix86_finalize_stack_realign_flags with ix86_finalize_stack_frame_flags. (ix86_expand_epilogue): Likewise. (ix86_expand_split_stack_prologue): Likewise. * doc/invoke.texi: Add a note for -fno-omit-frame-pointer. gcc/testsuite/ PR target/81736 * gcc.target/i386/pr81736-1.c: New test. * gcc.target/i386/pr81736-2.c: Likewise. * gcc.target/i386/pr81736-3.c: Likewise. * gcc.target/i386/pr81736-4.c: Likewise. * gcc.target/i386/pr81736-5.c: Likewise. * gcc.target/i386/pr81736-6.c: Likewise. * gcc.target/i386/pr81736-7.c: Likewise. Added: branches/range-gen2/gcc/testsuite/gcc.target/i386/pr81736-1.c branches/range-gen2/gcc/testsuite/gcc.target/i386/pr81736-2.c branches/range-gen2/gcc/testsuite/gcc.target/i386/pr81736-3.c branches/range-gen2/gcc/testsuite/gcc.target/i386/pr81736-4.c branches/range-gen2/gcc/testsuite/gcc.target/i386/pr81736-5.c branches/range-gen2/gcc/testsuite/gcc.target/i386/pr81736-6.c branches/range-gen2/gcc/testsuite/gcc.target/i386/pr81736-7.c Modified: branches/range-gen2/gcc/ChangeLog branches/range-gen2/gcc/config/i386/i386.c branches/range-gen2/gcc/doc/invoke.texi branches/range-gen2/gcc/testsuite/ChangeLog
