Lecture: resurrect LLVM-IR lesson

lecture/04-intermediate/images/func_cfg.dot

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+digraph "CFG for 'f' function" {
+	label="CFG for 'f' function";
+
+	Node0x55c39ee69b80 [shape=record,color="#b70d28ff", style=filled, fillcolor="#b70d2870",label="{bb:\l  %i = icmp sgt i64 %arg, %arg1\l  br i1 %i, label %bb2, label %bb4\l|{<s0>T|<s1>F}}"];
+	Node0x55c39ee69b80:s0 -> Node0x55c39ee69c30;
+	Node0x55c39ee69b80:s1 -> Node0x55c39ee69ca0;
+	Node0x55c39ee69c30 [shape=record,color="#3d50c3ff", style=filled, fillcolor="#f59c7d70",label="{bb2:                                              \l  %i3 = add nsw i64 1, 20\l  br label %bb6\l}"];
+	Node0x55c39ee69c30 -> Node0x55c39ee6a4b0;
+	Node0x55c39ee69ca0 [shape=record,color="#3d50c3ff", style=filled, fillcolor="#f59c7d70",label="{bb4:                                              \l  %i5 = add nsw i64 1, %arg1\l  br label %bb6\l}"];
+	Node0x55c39ee69ca0 -> Node0x55c39ee6a4b0;
+	Node0x55c39ee6a4b0 [shape=record,color="#b70d28ff", style=filled, fillcolor="#b70d2870",label="{bb6:                                              \l  %.0 = phi i64 [ %i3, %bb2 ], [ %i5, %bb4 ]\l  ret i64 %.0\l}"];
+}

lecture/04-intermediate/images/hierarchy.drawio

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lecture/04-intermediate/images/opt_chain.drawio

@@ -0,0 +1 @@
+<mxfile host="app.diagrams.net" modified="2021-11-26T15:10:46.196Z" agent="5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.164 Safari/537.36" etag="FL98ZvHm7KTgNXDTDXKF" version="15.8.6" type="device"><diagram id="Q6zoeQBmvapHs_SZyqo1" name="Page-1">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</diagram></mxfile>