From a35078a6d30c1eb5dabcf6d9c001cdd41e2b7c89 Mon Sep 17 00:00:00 2001
From: dibyendumajumdar <mobile@majumdar.org.uk>
Date: Tue, 6 Aug 2024 00:38:18 +0100
Subject: #92 Update readmes

---
 README.md           | 14 +++++++-------
 chapter12/README.md |  4 +---
 chapter13/README.md | 47 +----------------------------------------------
 3 files changed, 9 insertions(+), 56 deletions(-)

diff --git a/README.md b/README.md
index a664dfca..1cdd4937 100644
--- a/README.md
+++ b/README.md
@@ -39,10 +39,10 @@ The simple language will be a small subset of C.
 * [Chapter 9](chapter09/README.md): Global Value Numbering. Iterative peepholes to fixpoint. Worklists.
 * [Chapter 10](chapter10/README.md): User defined Struct types. Memory effects: general memory edges in SSA. Equivalence class aliasing. Null pointer analysis. Peephole optimization around load-after-store/store-after-store.
 * [Chapter 11](chapter11/README.md): Global Code Motion - Scheduling.
-* Chapter 12: Nested references in Structs. Float type. One dimensional static length array type. Array load/store.
-* Chapter 13: Functions and calls.
-* Chapter 14: Boolean operators `&&` and `||` including short circuit.
-* Chapter 16: Code generation: perhaps to Java bytecodes.
-* Chapter 17: Code generation: to native X86 or ARM. Instruction selection, BURS. Register allocation.
-* Chapter 18: Exceptions
-* Chapter 19: Garbage Collection.
+* [Chapter 12](chapter12/README.md): Float type.
+* [Chapter 13](chapter13/README.md): Nested references in Structs.
+* Chapter 14: One dimensional static length array type. Array load/store.
+* Chapter 15: Functions and calls.
+* Chapter 16: Exception control flow.
+* Chapter 17: Garbage Collection.
+* Chapter 18: Code gen to X86-64.
diff --git a/chapter12/README.md b/chapter12/README.md
index e381f1dc..4fb18df6 100644
--- a/chapter12/README.md
+++ b/chapter12/README.md
@@ -1,9 +1,7 @@
-# Chapter 12: Floats, Arrays, Refs
+# Chapter 12: Floats
 
 ## Floats
 
-In this chapter we add a series of new types and some modest syntax.
-
 Floating point values start with the `flt` type and compute IEEE754 64-bit arithmetic.
 Integer expressions auto-widen to floats when involved in a float expression.
 
diff --git a/chapter13/README.md b/chapter13/README.md
index 892f7170..1fe2097a 100644
--- a/chapter13/README.md
+++ b/chapter13/README.md
@@ -1,49 +1,4 @@
-# Chapter 12: Floats, References and Arrays
-
-In this chapter we add a series of new types and some modest syntax.
-
-## Floats
-
-Floating point values start with the `flt` type and compute IEEE754 64-bit arithmetic.
-Integer expressions auto-widen to floats when involved in a float expression.
-
-```java
-flt f = 0.5;
-int x = 2;
-f = f+x;     // Auto-widen x to 2.0, result is 2.5
-f = f+true;  // Since bools are just synonyms for integers 0,1 they auto-widen also
-```
-
-
-Here is Newton's method to a square root:
-```java
-flt guess = arg;  // Initial guess is just argument
-while( true ) {
-    // Next guess from Newton's method
-    flt next = (arg/guess + guess)/2;
-    // Break if hit fixed point
-    if( next == guess ) break;
-    guess = next;
-}
-return guess;
-```
-When run with argument 2.0, produces 1.414213562373095.
-
-Floating point operations have their own Nodes:
-
-| Node                   | Op                   |
-|------------------------|----------------------|
-| AddF, SubF, MulF, DivF | Basic binary FP ops  |
-| MinusF                 | Unary negate         |
-| EQF, LTF, LEF          | FP compare operators |
-
-And their own section in the Type lattice:
-
-Within the Type Lattice, we now add the following domain:
-
-* Float type - Float values.  The same shape as the Integer values, but floats
-  with a TOP, BOT and constants
-
+# Chapter 13: References
 
 ## References
 
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