RE: [avr-gcc-list] Code Size Causes Crash?

[Dave Hylands]

Hi Ben,

> BTW, I am surprised the compiler is dumb enough not to optimize away 
> your sequence of increments and decrements in the example program. 
> Constant and copy propagation would eliminate all of this 
> code.  Shows you what you're dealing with.

I was curious, and I found that by passing in any -O flag, a sequence of
alternating

        i += 1;
        i -= 1;

is, in fact, optimized away. I would not expect these to be optimized away if
no optimization flags were specified.

My avr-gcc reports itself as being version 3.4.1.

--
Dave Hylands
Vancouver, BC, Canada
http://www.DaveHylands.com/