gcc: remove inappropriate patch

0037-gcc-4.8-PR56797.patch was originally added as an OE backport during
4.8.0.  Upstream merged it in 4.8.1, and it was present in 4.9.0.

The original patch still applies to 4.9.1 (and presumably 4.8.2), but
now is modifying store_multiple_sequence instead of
load_multiple_sequence (the two functions are nearly identical).  It may
or may not be necessary in store_multiple_sequence, but absent a bug
report upstream supporting its application in this case, or a least an
updated comment and upstream status in the patch, I think this patch
should be dropped.

(From OE-Core rev: c89443e0f98249b9f9ea33f686c27babe35fd024)

Signed-off-by: Peter A. Bigot <pab@pabigot.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 0 insertions, 66 deletions

diff --git a/meta/recipes-devtools/gcc/gcc-4.9/0037-gcc-4.8-PR56797.patch b/meta/recipes-devtools/gcc/gcc-4.9/0037-gcc-4.8-PR56797.patch
deleted file mode 100644
index b5d7b864fd..0000000000
--- a/meta/recipes-devtools/gcc/gcc-4.9/0037-gcc-4.8-PR56797.patch
+++ /dev/null
@@ -1,66 +0,0 @@
-Upstream-Status: Backport
-Signed-off-by: Khem Raj <raj.khem@gmail.com>
-
-From patchwork Fri Apr 19 09:34:49 2013
-Content-Type: text/plain; charset="utf-8"
-MIME-Version: 1.0
-Content-Transfer-Encoding: 7bit
-Subject: [ARM] Fix PR56797
-Date: Thu, 18 Apr 2013 23:34:49 -0000
-From: Greta Yorsh <Greta.Yorsh@arm.com>
-X-Patchwork-Id: 237891
-Message-Id: <000801ce3ce1$23fbdd60$6bf39820$@yorsh@arm.com>
-To: "GCC Patches" <gcc-patches@gcc.gnu.org>
-Cc: <raj.khem@gmail.com>, "Richard Earnshaw" <Richard.Earnshaw@arm.com>,
- "Ramana Radhakrishnan" <Ramana.Radhakrishnan@arm.com>
-
-Fix PR56797
-http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56797
-
-The problem is that peephole optimizer thinks it can generate an ldm, but
-the pattern for ldm no longer matches, because after r188738 it requires
-that if one of the destination registers is SP then the base register must
-be SP, and it's not SP in the test case. 
-
-The test case fails on armv5t but doesn't fail on armv6t2 or armv7-a because
-peephole doesn't trigger there (because there is a different epilogue
-sequence). It looks like a latent problem for other architecture or CPUs.
-
-This patch adds this condition to the peephole optimizer.
-
-No regression on qemu for arm-none-eabi and fixes the test reported in the
-PR. I couldn't minimize the test sufficiently to include it in the
-testsuite. 
-
-Ok for trunk?
-
-Thanks,
-Greta
-
-gcc/ 
-
-2013-04-18  Greta Yorsh  <Greta.Yorsh@arm.com>
-        
-        PR target/56797
-        * config/arm/arm.c (load_multiple_sequence): Require SP
-        as base register for loads if SP is in the register list.
-
-
-diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c
-index d00849c..60fef78 100644
---- a/gcc/config/arm/arm.c
-+++ b/gcc/config/arm/arm.c
-@@ -10347,6 +10347,13 @@ load_multiple_sequence (rtx *operands, int nops, int *regs, int *saved_order,
-              || (i != nops - 1 && unsorted_regs[i] == base_reg))
-            return 0;
- 
-+          /* Don't allow SP to be loaded unless it is also the base
-+             register.  It guarantees that SP is reset correctly when
-+             an LDM instruction is interruptted.  Otherwise, we might
-+             end up with a corrupt stack.  */
-+          if (unsorted_regs[i] == SP_REGNUM && base_reg != SP_REGNUM)
-+            return 0;
-+
-          unsorted_offsets[i] = INTVAL (offset);
-          if (i == 0 || unsorted_offsets[i] < unsorted_offsets[order[0]])
-            order[0] = i;