[builtins] Use single line C++/C99 comment style

Use the uniform single line C++/99 style for code comments.

This is part of the cleanup proposed in "[RFC] compiler-rt builtins
cleanup and refactoring".

Differential Revision: https://reviews.llvm.org/D60352

llvm-svn: 359411

1 files changed, 16 insertions, 17 deletions

diff --git a/compiler-rt/lib/builtins/ctzdi2.c b/compiler-rt/lib/builtins/ctzdi2.c
index 3df3e2cf76f..9384aa6055a 100644
--- a/compiler-rt/lib/builtins/ctzdi2.c
+++ b/compiler-rt/lib/builtins/ctzdi2.c
@@ -1,31 +1,30 @@
-/* ===-- ctzdi2.c - Implement __ctzdi2 -------------------------------------===
- *
- * 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 __ctzdi2 for the compiler_rt library.
- *
- * ===----------------------------------------------------------------------===
- */
+//===-- ctzdi2.c - Implement __ctzdi2 -------------------------------------===//
+//
+// 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 __ctzdi2 for the compiler_rt library.
+//
+//===----------------------------------------------------------------------===//
 
 #include "int_lib.h"
 
-/* Returns: the number of trailing 0-bits  */
+// Returns: the number of trailing 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_ctz to __ctzdi2 rather than
- * __ctzsi2, leading to infinite recursion. */
+// On 64-bit architectures with neither a native clz instruction nor a native
+// ctz instruction, gcc resolves __builtin_ctz to __ctzdi2 rather than
+// __ctzsi2, leading to infinite recursion.
 #define __builtin_ctz(a) __ctzsi2(a)
 extern si_int __ctzsi2(si_int);
 #endif
 
-/* Precondition: a != 0 */
+// Precondition: a != 0
 
 COMPILER_RT_ABI si_int __ctzdi2(di_int a) {
   dwords x;