Restart LLVM IR SSA generation

This is the third go and I'm going for it!

examples/test.c

@@ -0,0 +1,4 @@
+int main() {
+	float a = 0.5;
+	return 0;
+}

examples/test.ll

@@ -0,0 +1,16 @@
+define void @main() {
+entry:
+	%0 = alloca i64, align 8
+	store i64 zeroinitializer, i64* %0
+	store i64 137, i64* %0
+	%1 = load i64, i64* %0
+	add i64 1, %1
+	store i64 %2, i64* %0
+	%3 = alloca float, align 4
+	store float zeroinitializer, float* %3
+	store float 0x3f8147ae00000000, float* %3
+	%4 = load float, float* %3
+	fadd float %4, 0x3f7d70a400000000
+	store float %5, float* %3
+	ret void
+}

examples/test.odin

@@ -1,6 +1,11 @@
-type Vec2: struct { x, y: f32 }
-
-
 main :: proc() {
+	// x : string;
+	// x = "Hello";
+	x : int;
+	x = 137;
+	x = 1 + x;
 
+	y : f32;
+	y = 1.01;
+	y = y + 0.99;
 }