Add new testcase from C source

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@906 91177308-0d34-0410-b5e6-96231b3b80d8

test/fib2.c

@@ -0,0 +1,22 @@
+/* -*- mode: c -*-
+ * $Id$
+ * http://www.bagley.org/~doug/shootout/
+ */
+
+int atoi(char *);
+void printf(char *, unsigned long);
+
+unsigned long
+fib(unsigned long n) {
+    if (n < 2)
+	return(1);
+    else
+	return(fib(n-2) + fib(n-1));
+}
+
+int
+main(int argc, char *argv[]) {
+    int N = ((argc == 2) ? atoi(argv[1]) : 15);
+    printf("%ld\n", fib(N));
+    return(0);
+}

test/fib2.ll

@@ -0,0 +1,69 @@
+%__intern_LC0 = constant [sbyte] c"fib returned: "
+%__intern_LC1 = constant [sbyte] c"\0A\00"
+
+implementation
+
+declare void "__main"()
+
+declare int "atoi"(sbyte *)
+
+declare void "printVal"([sbyte] *)
+declare void "printVal"(uint)
+
+int "main"(int %argc, sbyte * * %argv)
+begin
+bb1:					;[#uses=1]
+	call void () * %__main( )
+	%cond1003 = setne int %argc, 2		; <bool>	[#uses=1]
+	br bool %cond1003, label %bb4, label %bb2
+
+bb2:					;[#uses=2]
+	%cast1006 = cast ulong 8 to sbyte * *		; <sbyte * *>	[#uses=1]
+	%reg1004 = add sbyte * * %argv, %cast1006		; <sbyte * *>	[#uses=1]
+	%reg110 = load sbyte * * %reg1004		; <sbyte *>	[#uses=1]
+	%reg109 = call int (sbyte *) * %atoi( sbyte * %reg110 )		; <int>	[#uses=1]
+	br label %bb4
+
+bb4:					;[#uses=3]
+	%reg126 = phi int [ %reg109, %bb2 ], [ 15, %bb1 ]		; <int>	[#uses=3]
+	%cast1007 = cast int %reg126 to uint		; <uint>	[#uses=1]
+	%cond1005 = setgt uint %cast1007, 1		; <bool>	[#uses=1]
+	br bool %cond1005, label %bb6, label %bb7
+
+bb6:					;[#uses=2]
+	%reg115 = add int %reg126, -2		; <int>	[#uses=1]
+	%cast1008 = cast int %reg115 to uint		; <uint>	[#uses=1]
+	%reg116 = call uint (uint) * %fib( uint %cast1008 )		; <uint>	[#uses=1]
+	%reg118 = add int %reg126, -1		; <int>	[#uses=1]
+	%cast1009 = cast int %reg118 to uint		; <uint>	[#uses=1]
+	%reg119 = call uint (uint) * %fib( uint %cast1009 )		; <uint>	[#uses=1]
+	%reg127 = add uint %reg116, %reg119		; <uint>	[#uses=1]
+	br label %bb7
+
+bb7:					;[#uses=2]
+	%reg128 = phi uint [ %reg127, %bb6 ], [ 1, %bb4 ]		; <uint>	[#uses=1]
+	call void %printVal([sbyte] * %__intern_LC0)
+	call void %printVal(uint %reg128 )
+	call void %printVal([sbyte] * %__intern_LC1)
+	ret int 0
+end
+
+uint "fib"(uint %n)
+begin
+bb1:					;[#uses=0]
+	%cond1000 = setgt uint %n, 1		; <bool>	[#uses=1]
+	br bool %cond1000, label %bb3, label %bb2
+
+bb2:					;[#uses=1]
+	ret uint 1
+
+bb3:					;[#uses=1]
+	%cast1001 = cast long -2 to uint		; <uint>	[#uses=1]
+	%reg112 = add uint %n, %cast1001		; <uint>	[#uses=1]
+	%reg113 = call uint (uint) * %fib( uint %reg112 )		; <uint>	[#uses=1]
+	%cast1002 = cast long -1 to uint		; <uint>	[#uses=1]
+	%reg115 = add uint %n, %cast1002		; <uint>	[#uses=1]
+	%reg116 = call uint (uint) * %fib( uint %reg115 )		; <uint>	[#uses=1]
+	%reg110 = add uint %reg113, %reg116		; <uint>	[#uses=1]
+	ret uint %reg110
+end