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author | Anton Samokhvalov <pg83@yandex.ru> | 2022-02-10 16:45:15 +0300 |
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committer | Daniil Cherednik <dcherednik@yandex-team.ru> | 2022-02-10 16:45:15 +0300 |
commit | 72cb13b4aff9bc9cf22e49251bc8fd143f82538f (patch) | |
tree | da2c34829458c7d4e74bdfbdf85dff449e9e7fb8 /contrib/libs/cxxsupp/builtins/ashldi3.c | |
parent | 778e51ba091dc39e7b7fcab2b9cf4dbedfb6f2b5 (diff) | |
download | ydb-72cb13b4aff9bc9cf22e49251bc8fd143f82538f.tar.gz |
Restoring authorship annotation for Anton Samokhvalov <pg83@yandex.ru>. Commit 1 of 2.
Diffstat (limited to 'contrib/libs/cxxsupp/builtins/ashldi3.c')
-rw-r--r-- | contrib/libs/cxxsupp/builtins/ashldi3.c | 86 |
1 files changed, 43 insertions, 43 deletions
diff --git a/contrib/libs/cxxsupp/builtins/ashldi3.c b/contrib/libs/cxxsupp/builtins/ashldi3.c index eb4698ac51..f9f5bfe60e 100644 --- a/contrib/libs/cxxsupp/builtins/ashldi3.c +++ b/contrib/libs/cxxsupp/builtins/ashldi3.c @@ -1,43 +1,43 @@ -/* ====-- 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. - * - * ===----------------------------------------------------------------------=== - */ - -#include "int_lib.h" - -/* Returns: a << b */ - -/* Precondition: 0 <= b < bits_in_dword */ - -ARM_EABI_FNALIAS(llsl, ashldi3) - -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; -} +/* ====-- 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. + * + * ===----------------------------------------------------------------------=== + */ + +#include "int_lib.h" + +/* Returns: a << b */ + +/* Precondition: 0 <= b < bits_in_dword */ + +ARM_EABI_FNALIAS(llsl, ashldi3) + +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; +} |