sqrt function works... finally... ;-;

ir.ll

@@ -0,0 +1,27 @@
+; ModuleID = "main"
+target triple = "x86_64-pc-windows-msvc"
+target datalayout = ""
+
+declare i32 @"printf"(i8* %".1", ...)
+
+declare double @"sqrt"(double %".1")
+
+@"true" = constant i1 1
+@"false" = constant i1 0
+define i32 @"main"()
+{
+main_entry:
+  %".2" = alloca double
+  store double 0x4010000000000000, double* %".2"
+  %".4" = call double @"sqrt"(double 0x4010000000000000)
+  %".5" = alloca double
+  store double %".4", double* %".5"
+  %".7" = load double, double* %".5"
+  %".8" = alloca [5 x i8]*
+  store [5 x i8]* @"__str_1", [5 x i8]** %".8"
+  %".10" = bitcast [5 x i8]* @"__str_1" to i8*
+  %".11" = call i32 (i8*, ...) @"printf"(i8* %".10", double %".7")
+  ret i32 0
+}
+
+@"__str_1" = internal constant [5 x i8] c"%f\0a\00\00"