diff options
Diffstat (limited to 'compiler-rt/lib/builtins/clzdi2.c')
| -rw-r--r-- | compiler-rt/lib/builtins/clzdi2.c | 33 |
1 files changed, 16 insertions, 17 deletions
diff --git a/compiler-rt/lib/builtins/clzdi2.c b/compiler-rt/lib/builtins/clzdi2.c index 0ad2abc09bc..a0bacb2ae39 100644 --- a/compiler-rt/lib/builtins/clzdi2.c +++ b/compiler-rt/lib/builtins/clzdi2.c @@ -1,31 +1,30 @@ -/* ===-- clzdi2.c - Implement __clzdi2 -------------------------------------=== - * - * 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 __clzdi2 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- clzdi2.c - Implement __clzdi2 -------------------------------------===// +// +// 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 __clzdi2 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" -/* Returns: the number of leading 0-bits */ +// Returns: the number of leading 0-bits #if !defined(__clang__) && \ ((defined(__sparc__) && defined(__arch64__)) || defined(__mips64) || \ (defined(__riscv) && __SIZEOF_POINTER__ >= 8)) -/* On 64-bit architectures with neither a native clz instruction nor a native - * ctz instruction, gcc resolves __builtin_clz to __clzdi2 rather than - * __clzsi2, leading to infinite recursion. */ +// On 64-bit architectures with neither a native clz instruction nor a native +// ctz instruction, gcc resolves __builtin_clz to __clzdi2 rather than +// __clzsi2, leading to infinite recursion. #define __builtin_clz(a) __clzsi2(a) extern si_int __clzsi2(si_int); #endif -/* Precondition: a != 0 */ +// Precondition: a != 0 COMPILER_RT_ABI si_int __clzdi2(di_int a) { dwords x; |
