Code style and Readability fixes. Credit to Craig van Vliet.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@78403 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/popcountsi2.c b/lib/popcountsi2.c
index 68220ae..4f092ee 100644
--- a/lib/popcountsi2.c
+++ b/lib/popcountsi2.c
@@ -1,32 +1,33 @@
-//===-- popcountsi2.c - Implement __popcountsi2 ---------------------------===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file implements __popcountsi2 for the compiler_rt library.
-//
-//===----------------------------------------------------------------------===//
+/* ===-- popcountsi2.c - Implement __popcountsi2 ---------------------------===
+ *
+ * The LLVM Compiler Infrastructure
+ *
+ * This file is distributed under the University of Illinois Open Source
+ * License. See LICENSE.TXT for details.
+ *
+ * ===----------------------------------------------------------------------===
+ *
+ * This file implements __popcountsi2 for the compiler_rt library.
+ *
+ * ===----------------------------------------------------------------------===
+ */
#include "int_lib.h"
-// Returns: count of 1 bits
+/* Returns: count of 1 bits */
si_int
__popcountsi2(si_int a)
{
su_int x = (su_int)a;
x = x - ((x >> 1) & 0x55555555);
- // Every 2 bits holds the sum of every pair of bits
+ /* Every 2 bits holds the sum of every pair of bits */
x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
- // Every 4 bits holds the sum of every 4-set of bits (3 significant bits)
+ /* Every 4 bits holds the sum of every 4-set of bits (3 significant bits) */
x = (x + (x >> 4)) & 0x0F0F0F0F;
- // Every 8 bits holds the sum of every 8-set of bits (4 significant bits)
+ /* Every 8 bits holds the sum of every 8-set of bits (4 significant bits) */
x = (x + (x >> 16));
- // The lower 16 bits hold two 8 bit sums (5 significant bits).
- // Upper 16 bits are garbage
- return (x + (x >> 8)) & 0x0000003F; // (6 significant bits)
+ /* The lower 16 bits hold two 8 bit sums (5 significant bits).*/
+ /* Upper 16 bits are garbage */
+ return (x + (x >> 8)) & 0x0000003F; /* (6 significant bits) */
}