Make frem.ll flush after calling printf.

Without this, the test was flaky, and FileCheck would sometimes
not detect any input on stdin.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229732 91177308-0d34-0410-b5e6-96231b3b80d8

test/ExecutionEngine/frem.ll

@@ -8,12 +8,14 @@
 @str = internal constant [18 x i8] c"Double value: %f\0A\00"
 
 declare i32 @printf(i8* nocapture, ...) nounwind
+declare i32 @fflush(i8*) nounwind
 
 define i32 @main() {
   %flt = load float* @flt
   %float2 = frem float %flt, 5.0
   %double1 = fpext float %float2 to double
   call i32 (i8*, ...)* @printf(i8* getelementptr ([18 x i8]* @str, i32 0, i64 0), double %double1)
+  call i32 @fflush(i8* null)
   ret i32 0
 }