diff options
| author | hjl <hjl@138bc75d-0d04-0410-961f-82ee72b054a4> | 2018-01-15 11:33:42 +0000 |
|---|---|---|
| committer | hjl <hjl@138bc75d-0d04-0410-961f-82ee72b054a4> | 2018-01-15 11:33:42 +0000 |
| commit | 839ca2d69157ef03c8df0ab912dacdb991738694 (patch) | |
| tree | 6864f0491f186ef0ec6417caaddd1d762b056cd6 | |
| parent | fac9a54a753ac050f0ac40569571407f765111a6 (diff) | |
i386: More use reference of struct ix86_frame to avoid copy
When there is no need to make a copy of ix86_frame, we can use reference
of struct ix86_frame to avoid copy.
Backport from mainline
* config/i386/i386.c (ix86_expand_prologue): Use reference of
struct ix86_frame.
(ix86_expand_epilogue): Likewise.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-7-branch@256695 138bc75d-0d04-0410-961f-82ee72b054a4
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/config/i386/i386.c | 6 |
2 files changed, 9 insertions, 4 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index f10940440a45..029582575d85 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,6 +1,13 @@ 2018-01-15 H.J. Lu <hongjiu.lu@intel.com> Backport from mainline + * config/i386/i386.c (ix86_expand_prologue): Use reference of + struct ix86_frame. + (ix86_expand_epilogue): Likewise. + +2018-01-15 H.J. Lu <hongjiu.lu@intel.com> + + Backport from mainline * config/i386/i386.c (ix86_can_use_return_insn_p): Use reference of struct ix86_frame. (ix86_initial_elimination_offset): Likewise. diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c index 397ef7cac26a..986e6d795841 100644 --- a/gcc/config/i386/i386.c +++ b/gcc/config/i386/i386.c @@ -13667,7 +13667,6 @@ ix86_expand_prologue (void) { struct machine_function *m = cfun->machine; rtx insn, t; - struct ix86_frame frame; HOST_WIDE_INT allocate; bool int_registers_saved; bool sse_registers_saved; @@ -13691,7 +13690,7 @@ ix86_expand_prologue (void) m->fs.sp_valid = true; ix86_compute_frame_layout (); - frame = m->frame; + struct ix86_frame &frame = cfun->machine->frame; if (!TARGET_64BIT && ix86_function_ms_hook_prologue (current_function_decl)) { @@ -14354,13 +14353,12 @@ ix86_expand_epilogue (int style) { struct machine_function *m = cfun->machine; struct machine_frame_state frame_state_save = m->fs; - struct ix86_frame frame; bool restore_regs_via_mov; bool using_drap; ix86_finalize_stack_realign_flags (); ix86_compute_frame_layout (); - frame = m->frame; + struct ix86_frame &frame = cfun->machine->frame; m->fs.sp_valid = (!frame_pointer_needed || (crtl->sp_is_unchanging |