From 35a7afe1ac9543bcbe7ef1b6e3431896ecc23370 Mon Sep 17 00:00:00 2001
From: Ilya Enkovich <enkovich.gnu@gmail.com>
Date: Thu, 26 Nov 2015 12:28:57 +0000
Subject: [PATCH] backport: re PR target/68416 ([MPX] GCC emits a lot of
 redundant bndmov instructions)

gcc/

	Backport from mainline r230938.
	2015-11-26  Vladimir Makarov  <vmakarov@redhat.com>

	PR target/68416
	* config/i386/i386.h (enum reg_class): Add
	bounds registers to ALL_REGS.

gcc/testsuite/

	Backport from mainline r230938.
	2015-11-26  Ilya Enkovich  <enkovich.gnu@gmail.com>

	PR target/68416
	* gcc.target/i386/mpx/pr68416.c: New test.

From-SVN: r230945
---
 gcc/ChangeLog                               | 9 +++++++++
 gcc/config/i386/i386.h                      | 2 +-
 gcc/testsuite/ChangeLog                     | 8 ++++++++
 gcc/testsuite/gcc.target/i386/mpx/pr68416.c | 9 +++++++++
 4 files changed, 27 insertions(+), 1 deletion(-)
 create mode 100644 gcc/testsuite/gcc.target/i386/mpx/pr68416.c

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 68e2787156ef..c226f1d91145 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,12 @@
+2015-11-26  Ilya Enkovich  <enkovich.gnu@gmail.com>
+
+	Backport from mainline r230938.
+	2015-11-26  Vladimir Makarov  <vmakarov@redhat.com>
+
+	PR target/68416
+	* config/i386/i386.h (enum reg_class): Add
+	bounds registers to ALL_REGS.
+
 2015-11-26  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
 
 	Backport from mainline
diff --git a/gcc/config/i386/i386.h b/gcc/config/i386/i386.h
index 9637ce3e9aed..d5a52631081f 100644
--- a/gcc/config/i386/i386.h
+++ b/gcc/config/i386/i386.h
@@ -1429,7 +1429,7 @@ enum reg_class
 { 0x1ff1ffff,0xffffffe0,   0x1f },       /* FLOAT_INT_SSE_REGS */        \
        { 0x0,       0x0, 0x1fc0 },       /* MASK_EVEX_REGS */           \
        { 0x0,       0x0, 0x1fe0 },       /* MASK_REGS */                 \
-{ 0xffffffff,0xffffffff, 0x1fff }                                        \
+{ 0xffffffff,0xffffffff,0x1ffff }                                        \
 }
 
 /* The same information, inverted:
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index c2bef9538d28..c65569aa3f4a 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,11 @@
+2015-11-26  Ilya Enkovich  <enkovich.gnu@gmail.com>
+
+	Backport from mainline r230938.
+	2015-11-26  Ilya Enkovich  <enkovich.gnu@gmail.com>
+
+	PR target/68416
+	* gcc.target/i386/mpx/pr68416.c: New test.
+
 2015-11-26  Jakub Jelinek  <jakub@redhat.com>
 
 	PR rtl-optimization/68249
diff --git a/gcc/testsuite/gcc.target/i386/mpx/pr68416.c b/gcc/testsuite/gcc.target/i386/mpx/pr68416.c
new file mode 100644
index 000000000000..10587edf251f
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/mpx/pr68416.c
@@ -0,0 +1,9 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mmpx -fcheck-pointer-bounds" } */
+/* { dg-final { scan-assembler-not "bndmov" } } */
+
+int
+foo(int **arr, int i)
+{
+  return (*arr)[i];
+}