Initial import of compiler-rt.
-
llvm-svn: 74292
diff --git a/compiler-rt/test/Unit/clzti2_test.c b/compiler-rt/test/Unit/clzti2_test.c
new file mode 100644
index 0000000..5aa2eb7
--- /dev/null
+++ b/compiler-rt/test/Unit/clzti2_test.c
@@ -0,0 +1,88 @@
+//===-- clzti2_test.c - Test __clzti2 -------------------------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file tests __clzti2 for the compiler_rt library.
+//
+//===----------------------------------------------------------------------===//
+
+#if __x86_64
+
+#include "int_lib.h"
+#include <stdio.h>
+
+// Returns: the number of leading 0-bits
+
+// Precondition: a != 0
+
+si_int __clzti2(ti_int a);
+
+int test__clzti2(ti_int a, si_int expected)
+{
+ si_int x = __clzti2(a);
+ if (x != expected)
+ {
+ twords at;
+ at.all = a;
+ printf("error in __clzti2(0x%llX%.16llX) = %d, expected %d\n",
+ at.high, at.low, x, expected);
+ }
+ return x != expected;
+}
+
+char assumption_1[sizeof(ti_int) == 2*sizeof(di_int)] = {0};
+
+#endif
+
+int main()
+{
+#if __x86_64
+ const int N = (int)(sizeof(ti_int) * CHAR_BIT);
+
+ if (test__clzti2(0x00000001, N-1))
+ return 1;
+ if (test__clzti2(0x00000002, N-2))
+ return 1;
+ if (test__clzti2(0x00000003, N-2))
+ return 1;
+ if (test__clzti2(0x00000004, N-3))
+ return 1;
+ if (test__clzti2(0x00000005, N-3))
+ return 1;
+ if (test__clzti2(0x0000000A, N-4))
+ return 1;
+ if (test__clzti2(0x1000000A, N*3/4+3))
+ return 1;
+ if (test__clzti2(0x2000000A, N*3/4+2))
+ return 1;
+ if (test__clzti2(0x6000000A, N*3/4+1))
+ return 1;
+ if (test__clzti2(0x8000000AuLL, N*3/4))
+ return 1;
+ if (test__clzti2(0x000005008000000AuLL, 85))
+ return 1;
+ if (test__clzti2(0x020005008000000AuLL, 70))
+ return 1;
+ if (test__clzti2(0x720005008000000AuLL, 65))
+ return 1;
+ if (test__clzti2(0x820005008000000AuLL, 64))
+ return 1;
+
+ if (test__clzti2(make_ti(0x0000000080000000LL, 0x8000000800000000LL), 32))
+ return 1;
+ if (test__clzti2(make_ti(0x0000000100000000LL, 0x8000000800000000LL), 31))
+ return 1;
+ if (test__clzti2(make_ti(0x1000000100000000LL, 0x8000000800000000LL), 3))
+ return 1;
+ if (test__clzti2(make_ti(0x7000000100000000LL, 0x8000000800000000LL), 1))
+ return 1;
+ if (test__clzti2(make_ti(0x8000000100000000LL, 0x8000000800000000LL), 0))
+ return 1;
+#endif
+ return 0;
+}