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-rw-r--r--meta/recipes-devtools/gcc/gcc-6.4/backport/0002-i386-Use-reference-of-struct-ix86_frame-to-avoid-cop.patch74
1 files changed, 74 insertions, 0 deletions
diff --git a/meta/recipes-devtools/gcc/gcc-6.4/backport/0002-i386-Use-reference-of-struct-ix86_frame-to-avoid-cop.patch b/meta/recipes-devtools/gcc/gcc-6.4/backport/0002-i386-Use-reference-of-struct-ix86_frame-to-avoid-cop.patch
new file mode 100644
index 0000000000..df65b08f93
--- /dev/null
+++ b/meta/recipes-devtools/gcc/gcc-6.4/backport/0002-i386-Use-reference-of-struct-ix86_frame-to-avoid-cop.patch
@@ -0,0 +1,74 @@
+From fe2b3be3f4b6ec6b3a6f89c26016a3983b7cb351 Mon Sep 17 00:00:00 2001
+From: hjl <hjl@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Mon, 15 Jan 2018 11:28:44 +0000
+Subject: [PATCH 02/12] 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.
+
+Upstream-Status: Pending
+
+Signed-off-by: Juro Bystricky <juro.bystricky@intel.com>
+
+---
+ 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 a1ff32b..13ebf10 100644
+--- a/gcc/config/i386/i386.c
++++ b/gcc/config/i386/i386.c
+@@ -10887,7 +10887,6 @@ 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;
+@@ -10898,7 +10897,7 @@ 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);
+ }
+@@ -11310,7 +11309,7 @@ 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;
+@@ -13821,7 +13820,6 @@ 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_code_label *label;
+@@ -13834,7 +13832,7 @@ 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
+