From 4094f89d4a023ee13c3ed4905cab316a101b5d30 Mon Sep 17 00:00:00 2001
From: Irmen de Jong <irmen@razorvine.net>
Date: Thu, 10 Dec 2020 03:22:43 +0100
Subject: [PATCH] not a bug

---
 docs/source/todo.rst                | 2 ++
 examples/cx16/imgviewer/civiewer.p8 | 3 +--
 examples/test.p8                    | 8 --------
 3 files changed, 3 insertions(+), 10 deletions(-)

diff --git a/docs/source/todo.rst b/docs/source/todo.rst
index 34da46bf6..9590e6cb7 100644
--- a/docs/source/todo.rst
+++ b/docs/source/todo.rst
@@ -2,6 +2,8 @@
 TODO
 ====
 
+- optimize away 1 ** x into just 1 and 0 ** x into just 0
+- optimize 2 ** x into (1<<x)  if x is an integer.  where 1 is in the type of the assign target if possible
 - add minv(a,b) and maxv(a,b) functions to determine the max or min of 2 values
 - add progend() builtin function that returns the last address of the program in memory + 1 (to be able to stick dynamic data after the program easily)
 - see if we can group some errors together for instance the (now single) errors about unidentified symbols
diff --git a/examples/cx16/imgviewer/civiewer.p8 b/examples/cx16/imgviewer/civiewer.p8
index c30555128..01c3fa04b 100644
--- a/examples/cx16/imgviewer/civiewer.p8
+++ b/examples/cx16/imgviewer/civiewer.p8
@@ -75,8 +75,7 @@ main {
                         uword width = mkword(buffer[4], buffer[3])
                         uword height = mkword(buffer[6], buffer[5])
                         ubyte bpp = buffer[7]
-                        uword num_colors = 1
-                        num_colors <<= bpp  ; TODO FIX THIS:  uword num_colors = 1 << bpp
+                        uword num_colors = $0001 << bpp
                         ubyte flags = buffer[8]
                         ubyte compression = flags & %00000011
                         ubyte palette_format = (flags & %00000100) >> 2
diff --git a/examples/test.p8 b/examples/test.p8
index b3f199b43..eb0c5e457 100644
--- a/examples/test.p8
+++ b/examples/test.p8
@@ -7,14 +7,6 @@
 
 main {
     sub start() {
-        ubyte bpp = 7
-        uword num_colors = 1 << bpp     ; TODO FIX THIS
-
-        txt.chrout('\n')
-        txt.chrout('\n')
-        txt.print_uw(num_colors)
-        txt.chrout('\n')
-
 
         test_stack.test()
     }