re PR target/68416 ([MPX] GCC emits a lot of redundant bndmov instructions)

gcc/

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/

2015-11-26  Ilya Enkovich  <enkovich.gnu@gmail.com>

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

From-SVN: r230938

gcc/ChangeLog

+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  Jakub Jelinek  <jakub@redhat.com>
 
 	PR tree-optimization/68128

gcc/config/i386/i386.h

@@ -1457,7 +1457,7 @@ 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:

gcc/testsuite/ChangeLog

+2015-11-26  Ilya Enkovich  <enkovich.gnu@gmail.com>
+
+	PR target/68416
+	* gcc.target/i386/mpx/pr68416.c: New test.
+
 2015-11-26  Paolo Carlini  <paolo.carlini@oracle.com>
 
 	PR c++/67313

gcc/testsuite/gcc.target/i386/mpx/pr68416.c

+/* { 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];
+}