Upgrade libcompiler_rt from revision 117047 to 132478.

It seems there have only been a small amount to the compiler-rt source
code in the mean time. I'd rather have the code in sync as much as
possible by the time we release 9.0. Changes:

- The libcompiler_rt library is now dual licensed under both the
  University of Illinois "BSD-Like" license and the MIT license.

- Our local modifications for using .hidden instead of .private_extern
  have been upstreamed, meaning our changes to lib/assembly.h can now be
  reverted.

- A possible endless recursion in __modsi3() has been fixed.

- Support for ARM EABI has been added, but it has no effect on FreeBSD
  (yet).

- The functions __udivmodsi4 and __divmodsi4 have been added.

Requested by:	many, including bf@ and Pedro Giffuni

1 files changed, 29 insertions, 0 deletions

diff --git a/contrib/compiler-rt/lib/subsf3.c b/contrib/compiler-rt/lib/subsf3.c
new file mode 100644
index 0000000..625376a
--- /dev/null
+++ b/contrib/compiler-rt/lib/subsf3.c
@@ -0,0 +1,29 @@
+//===-- lib/subsf3.c - Single-precision subtraction ---------------*- C -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements single-precision soft-float subtraction with the
+// IEEE-754 default rounding (to nearest, ties to even).
+//
+//===----------------------------------------------------------------------===//
+#include "abi.h"
+
+#define SINGLE_PRECISION
+#include "fp_lib.h"
+
+fp_t COMPILER_RT_ABI __addsf3(fp_t a, fp_t b);
+
+ARM_EABI_FNALIAS(fsub, subsf3);
+
+// Subtraction; flip the sign bit of b and add.
+COMPILER_RT_ABI fp_t
+__subsf3(fp_t a, fp_t b) {
+    return __addsf3(a, fromRep(toRep(b) ^ signBit));
+}
+
+/* FIXME: rsub for ARM EABI */