From cde9cf2e6507bff9c81173b11061a8b120837c79 Mon Sep 17 00:00:00 2001
From: kokke <spam@rowdy.dk>
Date: Mon, 2 Jun 2014 22:35:03 +0200
Subject: Update README.md

---
 README.md | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/README.md b/README.md
index 0076869..a3dce0a 100644
--- a/README.md
+++ b/README.md
@@ -17,12 +17,25 @@ GCC size output when compiled for ARM:
     $ size aes.o
        text    data     bss     dec     hex filename
        1079       0     204    1283     503 aes.o
+       
     $ arm-none-eabi-gcc -O2 -c aes.c -o aes.o
     $ size aes.o
        text    data     bss     dec     hex filename
        1024       0     204    1228     4cc aes.o
 
 
+And if we're compiling for the Thumb ISA:
+
+    $ arm-none-eabi-gcc -O2 -c -mthumb aes.c -o aes.o
+    $ size aes.o
+       text    data     bss     dec     hex filename
+        856       0     204    1060     424 aes.o
+    $ arm-none-eabi-gcc -Os -c -mthumb aes.c -o aes.o
+    $ size aes.o
+       text    data     bss     dec     hex filename
+        867       0     204    1071     42f aes.o
+
+
 
 Somehow, -O2 is a bit smaller than -Os with this compiler. I am using Mentor Graphics ARM toolchain:
 
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