diff options
Diffstat (limited to 'meta/recipes-devtools/gcc/gcc-4.9/backport/0010-i386-Use-reference-of-struct-ix86_frame-to-avoid-cop.patch')
| -rw-r--r-- | meta/recipes-devtools/gcc/gcc-4.9/backport/0010-i386-Use-reference-of-struct-ix86_frame-to-avoid-cop.patch | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/meta/recipes-devtools/gcc/gcc-4.9/backport/0010-i386-Use-reference-of-struct-ix86_frame-to-avoid-cop.patch b/meta/recipes-devtools/gcc/gcc-4.9/backport/0010-i386-Use-reference-of-struct-ix86_frame-to-avoid-cop.patch new file mode 100644 index 00000000000..61e6415c36b --- /dev/null +++ b/meta/recipes-devtools/gcc/gcc-4.9/backport/0010-i386-Use-reference-of-struct-ix86_frame-to-avoid-cop.patch @@ -0,0 +1,69 @@ +From 2015a09e332309f12de1dadfe179afa6a29368b8 Mon Sep 17 00:00:00 2001 +From: hjl <hjl@138bc75d-0d04-0410-961f-82ee72b054a4> +Date: Mon, 6 Nov 2017 23:04:15 +0000 +Subject: [PATCH 10/20] i386: 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 + 2017-11-06 H.J. Lu <hongjiu.lu@intel.com> + + * config/i386/i386.c (ix86_can_use_return_insn_p): Use reference + of struct ix86_frame. + (ix86_initial_elimination_offset): Likewise. + (ix86_expand_split_stack_prologue): Likewise. +--- + gcc/config/i386/i386.c | 8 +++----- + 1 file changed, 3 insertions(+), 5 deletions(-) + +diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c +index 154d9e6..cda35ed 100644 +--- a/gcc/config/i386/i386.c ++++ b/gcc/config/i386/i386.c +@@ -9029,7 +9029,6 @@ symbolic_reference_mentioned_p (rtx op) + bool + ix86_can_use_return_insn_p (void) + { +- struct ix86_frame frame; + + if (! reload_completed || frame_pointer_needed) + return 0; +@@ -9040,7 +9039,7 @@ ix86_can_use_return_insn_p (void) + return 0; + + ix86_compute_frame_layout (); +- frame = cfun->machine->frame; ++ struct ix86_frame &frame = cfun->machine->frame; + return (frame.stack_pointer_offset == UNITS_PER_WORD + && (frame.nregs + frame.nsseregs) == 0); + } +@@ -9434,7 +9433,7 @@ HOST_WIDE_INT + ix86_initial_elimination_offset (int from, int to) + { + ix86_compute_frame_layout (); +- struct ix86_frame frame = cfun->machine->frame; ++ struct ix86_frame &frame = cfun->machine->frame; + + if (from == ARG_POINTER_REGNUM && to == HARD_FRAME_POINTER_REGNUM) + return frame.hard_frame_pointer_offset; +@@ -11868,7 +11867,6 @@ static GTY(()) rtx split_stack_fn_large; + void + ix86_expand_split_stack_prologue (void) + { +- struct ix86_frame frame; + HOST_WIDE_INT allocate; + unsigned HOST_WIDE_INT args_size; + rtx label, limit, current, jump_insn, allocate_rtx, call_insn, call_fusage; +@@ -11880,7 +11878,7 @@ ix86_expand_split_stack_prologue (void) + + ix86_finalize_stack_realign_flags (); + ix86_compute_frame_layout (); +- frame = cfun->machine->frame; ++ struct ix86_frame &frame = cfun->machine->frame; + allocate = frame.stack_pointer_offset - INCOMING_FRAME_SP_OFFSET; + + /* This is the label we will branch to if we have enough stack +-- +2.7.4 + |