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-rw-r--r--lib/builtins/ashldi3.c65
1 files changed, 29 insertions, 36 deletions
diff --git a/lib/builtins/ashldi3.c b/lib/builtins/ashldi3.c
index a5c1836006b9..7c81057a2284 100644
--- a/lib/builtins/ashldi3.c
+++ b/lib/builtins/ashldi3.c
@@ -1,45 +1,38 @@
-/* ====-- ashldi3.c - Implement __ashldi3 -----------------------------------===
- *
- * 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 __ashldi3 for the compiler_rt library.
- *
- * ===----------------------------------------------------------------------===
- */
+// ====-- ashldi3.c - Implement __ashldi3 ---------------------------------===//
+//
+// 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 __ashldi3 for the compiler_rt library.
+//
+//===----------------------------------------------------------------------===//
#include "int_lib.h"
-/* Returns: a << b */
+// Returns: a << b
-/* Precondition: 0 <= b < bits_in_dword */
+// Precondition: 0 <= b < bits_in_dword
-COMPILER_RT_ABI di_int
-__ashldi3(di_int a, si_int b)
-{
- const int bits_in_word = (int)(sizeof(si_int) * CHAR_BIT);
- dwords input;
- dwords result;
- input.all = a;
- if (b & bits_in_word) /* bits_in_word <= b < bits_in_dword */
- {
- result.s.low = 0;
- result.s.high = input.s.low << (b - bits_in_word);
- }
- else /* 0 <= b < bits_in_word */
- {
- if (b == 0)
- return a;
- result.s.low = input.s.low << b;
- result.s.high = (input.s.high << b) | (input.s.low >> (bits_in_word - b));
- }
- return result.all;
+COMPILER_RT_ABI di_int __ashldi3(di_int a, si_int b) {
+ const int bits_in_word = (int)(sizeof(si_int) * CHAR_BIT);
+ dwords input;
+ dwords result;
+ input.all = a;
+ if (b & bits_in_word) /* bits_in_word <= b < bits_in_dword */ {
+ result.s.low = 0;
+ result.s.high = input.s.low << (b - bits_in_word);
+ } else /* 0 <= b < bits_in_word */ {
+ if (b == 0)
+ return a;
+ result.s.low = input.s.low << b;
+ result.s.high = (input.s.high << b) | (input.s.low >> (bits_in_word - b));
+ }
+ return result.all;
}
#if defined(__ARM_EABI__)
-AEABI_RTABI di_int __aeabi_llsl(di_int a, si_int b) COMPILER_RT_ALIAS(__ashldi3);
+COMPILER_RT_ALIAS(__ashldi3, __aeabi_llsl)
#endif