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authorpatrick <patrick@openbsd.org>2020-08-10 21:03:40 +0000
committerpatrick <patrick@openbsd.org>2020-08-10 21:03:40 +0000
commit3cab2bb3f667058bece8e38b12449a63a9d73c4b (patch)
tree732ebd68e507f798225d97f4f2dd7ff8468d3e17 /gnu/llvm/compiler-rt/lib/builtins/paritysi2.c
parentReduce log spam. (diff)
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Import compiler-rt 10.0.1 release.
ok kettenis@
Diffstat (limited to 'gnu/llvm/compiler-rt/lib/builtins/paritysi2.c')
-rw-r--r--gnu/llvm/compiler-rt/lib/builtins/paritysi2.c23
1 files changed, 23 insertions, 0 deletions
diff --git a/gnu/llvm/compiler-rt/lib/builtins/paritysi2.c b/gnu/llvm/compiler-rt/lib/builtins/paritysi2.c
new file mode 100644
index 00000000000..3efa961f2f8
--- /dev/null
+++ b/gnu/llvm/compiler-rt/lib/builtins/paritysi2.c
@@ -0,0 +1,23 @@
+//===-- paritysi2.c - Implement __paritysi2 -------------------------------===//
+//
+// 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 __paritysi2 for the compiler_rt library.
+//
+//===----------------------------------------------------------------------===//
+
+#include "int_lib.h"
+
+// Returns: 1 if number of bits is odd else returns 0
+
+COMPILER_RT_ABI si_int __paritysi2(si_int a) {
+ su_int x = (su_int)a;
+ x ^= x >> 16;
+ x ^= x >> 8;
+ x ^= x >> 4;
+ return (0x6996 >> (x & 0xF)) & 1;
+}