Creating branches/google/stable and tags/google/stable/2019-05-14 from r360103google/stable

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/branches/google/stable@360714 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 27 insertions, 31 deletions

diff --git a/lib/builtins/divsi3.c b/lib/builtins/divsi3.c
index 75aea008d..b97e11119 100644
--- a/lib/builtins/divsi3.c
+++ b/lib/builtins/divsi3.c
@@ -1,39 +1,35 @@
-/* ===-- divsi3.c - Implement __divsi3 -------------------------------------===
- *
- *                     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 __divsi3 for the compiler_rt library.
- *
- * ===----------------------------------------------------------------------===
- */
+//===-- divsi3.c - Implement __divsi3 -------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements __divsi3 for the compiler_rt library.
+//
+//===----------------------------------------------------------------------===//
 
 #include "int_lib.h"
 
-/* Returns: a / b */
+// Returns: a / b
 
-COMPILER_RT_ABI si_int
-__divsi3(si_int a, si_int b)
-{
-    const int bits_in_word_m1 = (int)(sizeof(si_int) * CHAR_BIT) - 1;
-    si_int s_a = a >> bits_in_word_m1;           /* s_a = a < 0 ? -1 : 0 */
-    si_int s_b = b >> bits_in_word_m1;           /* s_b = b < 0 ? -1 : 0 */
-    a = (a ^ s_a) - s_a;                         /* negate if s_a == -1 */
-    b = (b ^ s_b) - s_b;                         /* negate if s_b == -1 */
-    s_a ^= s_b;                                  /* sign of quotient */
-    /*
-     * On CPUs without unsigned hardware division support,
-     *  this calls __udivsi3 (notice the cast to su_int).
-     * On CPUs with unsigned hardware division support,
-     *  this uses the unsigned division instruction.
-     */
-    return ((su_int)a/(su_int)b ^ s_a) - s_a;    /* negate if s_a == -1 */
+COMPILER_RT_ABI si_int __divsi3(si_int a, si_int b) {
+  const int bits_in_word_m1 = (int)(sizeof(si_int) * CHAR_BIT) - 1;
+  si_int s_a = a >> bits_in_word_m1; // s_a = a < 0 ? -1 : 0
+  si_int s_b = b >> bits_in_word_m1; // s_b = b < 0 ? -1 : 0
+  a = (a ^ s_a) - s_a;               // negate if s_a == -1
+  b = (b ^ s_b) - s_b;               // negate if s_b == -1
+  s_a ^= s_b;                        // sign of quotient
+  //
+  // On CPUs without unsigned hardware division support,
+  //  this calls __udivsi3 (notice the cast to su_int).
+  // On CPUs with unsigned hardware division support,
+  //  this uses the unsigned division instruction.
+  //
+  return ((su_int)a / (su_int)b ^ s_a) - s_a; // negate if s_a == -1
 }
 
 #if defined(__ARM_EABI__)
-AEABI_RTABI si_int __aeabi_idiv(si_int a, si_int b) COMPILER_RT_ALIAS(__divsi3);
+COMPILER_RT_ALIAS(__divsi3, __aeabi_idiv)
 #endif