From 42e0c593084784cb0b630d99b8361bc88abadb78 Mon Sep 17 00:00:00 2001
From: Damien George
Date: Sat, 14 Mar 2015 13:11:35 +0000
Subject: py: Add MICROPY_COMP_{DOUBLE,TRIPLE}_TUPLE_ASSIGN config options.

These allow to fine-tune the compiler to select whether it optimises
tuple assignments of the form a, b = c, d and a, b, c = d, e, f.
Sensible defaults are provided.
---
 py/mpconfig.h | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'py/mpconfig.h')

diff --git a/py/mpconfig.h b/py/mpconfig.h
index bfa412167..aac3ade08 100644
--- a/py/mpconfig.h
+++ b/py/mpconfig.h
@@ -175,6 +175,18 @@
 #define MICROPY_COMP_CONST (1)
 #endif
 
+// Whether to enable optimisation of: a, b = c, d
+// Costs 124 bytes (Thumb2)
+#ifndef MICROPY_COMP_DOUBLE_TUPLE_ASSIGN
+#define MICROPY_COMP_DOUBLE_TUPLE_ASSIGN (1)
+#endif
+
+// Whether to enable optimisation of: a, b, c = d, e, f
+// Cost 156 bytes (Thumb2)
+#ifndef MICROPY_COMP_TRIPLE_TUPLE_ASSIGN
+#define MICROPY_COMP_TRIPLE_TUPLE_ASSIGN (0)
+#endif
+
 /*****************************************************************************/
 /* Internal debugging stuff                                                  */
 
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