Update compiler-rt to trunk r224034. This brings a number of new

builtins, and also the various sanitizers.  Support for these will be
added in a later commit.

1 files changed, 45 insertions, 0 deletions

diff --git a/contrib/compiler-rt/lib/builtins/fixdfti.c b/contrib/compiler-rt/lib/builtins/fixdfti.c
new file mode 100644
index 0000000..2c27f4b
--- /dev/null
+++ b/contrib/compiler-rt/lib/builtins/fixdfti.c
@@ -0,0 +1,45 @@
+/* ===-- fixdfti.c - Implement __fixdfti -----------------------------------===
+ *
+ *                     The LLVM Compiler Infrastructure
+ *
+ * This file is dual licensed under the MIT and the University of Illinois Open
+ * Source Licenses. See LICENSE.TXT for details.
+ *
+ * ===----------------------------------------------------------------------===
+ *
+ * This file implements __fixdfti for the compiler_rt library.
+ *
+ * ===----------------------------------------------------------------------===
+ */
+
+#include "int_lib.h"
+
+#ifdef CRT_HAS_128BIT
+
+/* Returns: convert a to a signed long long, rounding toward zero. */
+
+/* Assumption: double is a IEEE 64 bit floating point type 
+ *             su_int is a 32 bit integral type
+ *             value in double is representable in ti_int (no range checking performed)
+ */
+
+/* seee eeee eeee mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm */
+
+COMPILER_RT_ABI ti_int
+__fixdfti(double a)
+{
+    double_bits fb;
+    fb.f = a;
+    int e = ((fb.u.s.high & 0x7FF00000) >> 20) - 1023;
+    if (e < 0)
+        return 0;
+    ti_int s = (si_int)(fb.u.s.high & 0x80000000) >> 31;
+    ti_int r = 0x0010000000000000uLL | (0x000FFFFFFFFFFFFFuLL & fb.u.all);
+    if (e > 52)
+        r <<= (e - 52);
+    else
+        r >>= (52 - e);
+    return (r ^ s) - s;
+}
+
+#endif /* CRT_HAS_128BIT */