Import libcompiler_rt into HEAD and add Makefiles.

Obtained from:	user/ed/compiler-rt

1 files changed, 38 insertions, 0 deletions

diff --git a/contrib/compiler-rt/lib/cmpdi2.c b/contrib/compiler-rt/lib/cmpdi2.c
new file mode 100644
index 0000000..0b87352
--- /dev/null
+++ b/contrib/compiler-rt/lib/cmpdi2.c
@@ -0,0 +1,38 @@
+/* ===-- cmpdi2.c - Implement __cmpdi2 -------------------------------------===
+ *
+ *                     The LLVM Compiler Infrastructure
+ *
+ * This file is distributed under the University of Illinois Open Source
+ * License. See LICENSE.TXT for details.
+ *
+ * ===----------------------------------------------------------------------===
+ * 
+ * This file implements __cmpdi2 for the compiler_rt library.
+ *
+ * ===----------------------------------------------------------------------===
+ */
+
+#include "int_lib.h"
+
+/* Returns:  if (a <  b) returns 0
+*           if (a == b) returns 1
+*           if (a >  b) returns 2
+*/
+
+si_int
+__cmpdi2(di_int a, di_int b)
+{
+    dwords x;
+    x.all = a;
+    dwords y;
+    y.all = b;
+    if (x.s.high < y.s.high)
+        return 0;
+    if (x.s.high > y.s.high)
+        return 2;
+    if (x.s.low < y.s.low)
+        return 0;
+    if (x.s.low > y.s.low)
+        return 2;
+    return 1;
+}