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

contrib/compiler-rt/CREDITS.TXT

@@ -19,3 +19,6 @@ W: http://www.auroraux.org
 D: CMake'ify Compiler-RT build system
 D: Maintain Solaris & AuroraUX ports of Compiler-RT
 
+N: Howard Hinnant
+E: [email protected]
+D: Architect and primary author of compiler-rt

contrib/compiler-rt/LICENSE.TXT

@@ -1,10 +1,21 @@
 ==============================================================================
-LLVM Release License
+compiler_rt License
 ==============================================================================
+
+The compiler_rt library is dual licensed under both the University of Illinois
+"BSD-Like" license and the MIT license.  As a user of this code you may choose
+to use it under either license.  As a contributor, you agree to allow your code
+to be used under both.
+
+Full text of the relevant licenses is included below.
+
+==============================================================================
+
 University of Illinois/NCSA
 Open Source License
 
-Copyright (c) 2003-2009 University of Illinois at Urbana-Champaign.
+Copyright (c) 2009-2010 by the contributors listed in CREDITS.TXT
+
 All rights reserved.
 
 Developed by:
@@ -43,21 +54,23 @@ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS WITH THE
 SOFTWARE.
 
 ==============================================================================
-Copyrights and Licenses for Third Party Software Distributed with LLVM:
-==============================================================================
-The LLVM software contains code written by third parties.  Such software will
-have its own individual LICENSE.TXT file in the directory in which it appears.
-This file will describe the copyrights, license, and restrictions which apply
-to that code.
-
-The disclaimer of warranty in the University of Illinois Open Source License
-applies to all code in the LLVM Distribution, and nothing in any of the
-other licenses gives permission to use the names of the LLVM Team or the
-University of Illinois to endorse or promote products derived from this
-Software.
-
-The following pieces of software have additional or alternate copyrights,
-licenses, and/or restrictions:
-
-Program             Directory
--------             ---------
+
+Copyright (c) 2009-2010 by the contributors listed in CREDITS.TXT
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

contrib/compiler-rt/README.txt

@@ -77,8 +77,12 @@ ti_int __modti3    (ti_int a, ti_int b);               // a % b   signed
 su_int __umodsi3   (su_int a, su_int b);               // a % b   unsigned
 du_int __umoddi3   (du_int a, du_int b);               // a % b   unsigned
 tu_int __umodti3   (tu_int a, tu_int b);               // a % b   unsigned
-du_int __udivmoddi4(du_int a, du_int b, du_int* rem);  // a / b, *rem = a % b
-tu_int __udivmodti4(tu_int a, tu_int b, tu_int* rem);  // a / b, *rem = a % b
+du_int __udivmoddi4(du_int a, du_int b, du_int* rem);  // a / b, *rem = a % b  unsigned
+tu_int __udivmodti4(tu_int a, tu_int b, tu_int* rem);  // a / b, *rem = a % b  unsigned
+su_int __udivmodsi4(su_int a, su_int b, su_int* rem);  // a / b, *rem = a % b  unsigned
+si_int __divmodsi4(si_int a, si_int b, si_int* rem);   // a / b, *rem = a % b  signed
+
+
 
 //  Integral arithmetic with trapping overflow
 

contrib/compiler-rt/lib/abi.h

@@ -0,0 +1,23 @@
+/* ===------ abi.h - configuration header for compiler-rt  -----------------===
+ *
+ *                     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 is a configuration header for compiler-rt.
+ * This file is not part of the interface of this library.
+ *
+ * ===----------------------------------------------------------------------===
+ */
+
+#if __ARM_EABI__
+# define ARM_EABI_FNALIAS(aeabi_name, name)         \
+  void __aeabi_##aeabi_name() __attribute__((alias("__" #name)));
+# define COMPILER_RT_ABI __attribute__((pcs("aapcs")))
+#else
+# define ARM_EABI_FNALIAS(aeabi_name, name)
+# define COMPILER_RT_ABI
+#endif

contrib/compiler-rt/lib/absvdi2.c

@@ -2,15 +2,16 @@
  *
  *                     The LLVM Compiler Infrastructure
  *
- * This file is distributed under the University of Illinois Open Source
- * License. See LICENSE.TXT for details.
+ * This file is dual licensed under the MIT and the University of Illinois Open
+ * Source Licenses. See LICENSE.TXT for details.
  *
  *===----------------------------------------------------------------------===
  *
  * This file implements __absvdi2 for the compiler_rt library.
  *
  *===----------------------------------------------------------------------===
  */
+#include "abi.h"
 
 #include "int_lib.h"
 #include <stdlib.h>
@@ -19,7 +20,7 @@
 
 /* Effects: aborts if abs(x) < 0 */
 
-di_int
+COMPILER_RT_ABI di_int
 __absvdi2(di_int a)
 {
     const int N = (int)(sizeof(di_int) * CHAR_BIT);

contrib/compiler-rt/lib/absvsi2.c

@@ -2,15 +2,16 @@
  *
  *                     The LLVM Compiler Infrastructure
  *
- * This file is distributed under the University of Illinois Open Source
- * License. See LICENSE.TXT for details.
+ * This file is dual licensed under the MIT and the University of Illinois Open
+ * Source Licenses. See LICENSE.TXT for details.
  *
  * ===----------------------------------------------------------------------===
  *
  * This file implements __absvsi2 for the compiler_rt library.
  *
  * ===----------------------------------------------------------------------===
- */ 
+ */
+#include "abi.h"
 
 #include "int_lib.h"
 #include <stdlib.h>
@@ -19,7 +20,7 @@
 
 /* Effects: aborts if abs(x) < 0 */
 
-si_int
+COMPILER_RT_ABI si_int
 __absvsi2(si_int a)
 {
     const int N = (int)(sizeof(si_int) * CHAR_BIT);

contrib/compiler-rt/lib/absvti2.c

@@ -2,8 +2,8 @@
  *
  *                     The LLVM Compiler Infrastructure
  *
- * This file is distributed under the University of Illinois Open Source
- * License. See LICENSE.TXT for details.
+ * This file is dual licensed under the MIT and the University of Illinois Open
+ * Source Licenses. See LICENSE.TXT for details.
  *
  * ===----------------------------------------------------------------------===
  *

contrib/compiler-rt/lib/adddf3.c

@@ -1,21 +1,26 @@
-//===-- lib/adddf3.c - Double-precision addition and subtraction --*- C -*-===//
+//===-- lib/adddf3.c - Double-precision addition ------------------*- C -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
-// This file implements double-precision soft-float addition and subtraction
-// with the IEEE-754 default rounding (to nearest, ties to even).
+// This file implements double-precision soft-float addition with the IEEE-754
+// default rounding (to nearest, ties to even).
 //
 //===----------------------------------------------------------------------===//
 
+#include "abi.h"
+
 #define DOUBLE_PRECISION
 #include "fp_lib.h"
 
-fp_t __adddf3(fp_t a, fp_t b) {
+ARM_EABI_FNALIAS(dadd, adddf3);
+
+COMPILER_RT_ABI fp_t
+__adddf3(fp_t a, fp_t b) {
 
     rep_t aRep = toRep(a);
     rep_t bRep = toRep(b);
@@ -147,8 +152,3 @@ fp_t __adddf3(fp_t a, fp_t b) {
     if (roundGuardSticky == 0x4) result += result & 1;
     return fromRep(result);
 }
-
-// Subtraction; flip the sign bit of b and add.
-fp_t __subdf3(fp_t a, fp_t b) {
-    return __adddf3(a, fromRep(toRep(b) ^ signBit));
-}

contrib/compiler-rt/lib/addsf3.c

@@ -1,20 +1,24 @@
-//===-- lib/addsf3.c - Single-precision addition and subtraction --*- C -*-===//
+//===-- lib/addsf3.c - Single-precision addition ------------------*- C -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// 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 addition and subtraction
-// with the IEEE-754 default rounding (to nearest, ties to even).
+// This file implements single-precision soft-float addition with the IEEE-754
+// default rounding (to nearest, ties to even).
 //
 //===----------------------------------------------------------------------===//
 
+#include "abi.h"
+
 #define SINGLE_PRECISION
 #include "fp_lib.h"
 
+ARM_EABI_FNALIAS(fadd, addsf3);
+
 fp_t __addsf3(fp_t a, fp_t b) {
 
     rep_t aRep = toRep(a);
@@ -147,18 +151,3 @@ fp_t __addsf3(fp_t a, fp_t b) {
     if (roundGuardSticky == 0x4) result += result & 1;
     return fromRep(result);
 }
-
-// Subtraction; flip the sign bit of b and add.
-fp_t __subsf3(fp_t a, fp_t b) {
-    return __addsf3(a, fromRep(toRep(b) ^ signBit));
-}
-
-
-
-
-
-
-
-
-
-

contrib/compiler-rt/lib/addvdi3.c

@@ -2,15 +2,16 @@
  *
  *                     The LLVM Compiler Infrastructure
  *
- * This file is distributed under the University of Illinois Open Source
- * License. See LICENSE.TXT for details.
+ * This file is dual licensed under the MIT and the University of Illinois Open
+ * Source Licenses. See LICENSE.TXT for details.
  *
  * ===----------------------------------------------------------------------===
  *
  * This file implements __addvdi3 for the compiler_rt library.
  *
  * ===----------------------------------------------------------------------===
  */
+#include "abi.h"
 
 #include "int_lib.h"
 #include <stdlib.h>
@@ -19,7 +20,7 @@
 
 /* Effects: aborts if a + b overflows */
 
-di_int
+COMPILER_RT_ABI di_int
 __addvdi3(di_int a, di_int b)
 {
     di_int s = a + b;

contrib/compiler-rt/lib/addvsi3.c

@@ -2,15 +2,16 @@
  *
  *                    The LLVM Compiler Infrastructure
  *
- * This file is distributed under the University of Illinois Open Source
- * License. See LICENSE.TXT for details.
+ * This file is dual licensed under the MIT and the University of Illinois Open
+ * Source Licenses. See LICENSE.TXT for details.
  *
  * ===----------------------------------------------------------------------===
  *
  * This file implements __addvsi3 for the compiler_rt library.
  *
  * ===----------------------------------------------------------------------===
  */
+#include "abi.h"
 
 #include "int_lib.h"
 #include <stdlib.h>
@@ -19,7 +20,7 @@
 
 /* Effects: aborts if a + b overflows */
 
-si_int
+COMPILER_RT_ABI si_int
 __addvsi3(si_int a, si_int b)
 {
     si_int s = a + b;

contrib/compiler-rt/lib/addvti3.c

@@ -2,8 +2,8 @@
  *
  *                     The LLVM Compiler Infrastructure
  *
- * This file is distributed under the University of Illinois Open Source
- * License. See LICENSE.TXT for details.
+ * This file is dual licensed under the MIT and the University of Illinois Open
+ * Source Licenses. See LICENSE.TXT for details.
  *
  * ===----------------------------------------------------------------------===
  *