Change the instruction encoding for the bytecode

Change the encoding, so that even instructions are short ones,
odd instructions long. This implies that the lowest bit encodes
whether an instruction is short or long (1 vs 4 byte encoded).

This prepares for allowing us to extend the totoal number of
instructions beyond 128.

Change-Id: I4732e7241d3593b24ad25cd69555edc25f38d2f6
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/qml/compiler/qv4bytecodegenerator_p.h b/src/qml/compiler/qv4bytecodegenerator_p.h
index 78ce3624ea..dca5771356 100644
--- a/src/qml/compiler/qv4bytecodegenerator_p.h
+++ b/src/qml/compiler/qv4bytecodegenerator_p.h
@@ -279,7 +279,7 @@ private:
         int line;
         int offsetForJump;
         int linkedLabel;
-        char packed[sizeof(Instr) + 2]; // 2 for instruction and prefix
+        unsigned char packed[sizeof(Instr) + 2]; // 2 for instruction type
     };
 
     void compressInstructions();