22 Jan
2015
22 Jan
'15
4:25 p.m.
On 22 Jan 2015 at 16:17, Fletcher, John P wrote:
I am working to get the bugs out of Phoenix and have a situation where some tests are optimisation unstable - they run on Clang 3.5 with -O1 but not -O2 and on gcc 4.9.0 with -O0 but not -O1. The higher optimisation gives an erroneous return value.
I am looking for tools to work with this.
I want to try making finer grained optimization but have not succeeded yet.
I assume you've tried turning off aliasing optimisation but otherwise with optimisation on? Weird failures with O2 not seen on O1 are usually aliasing bugs in my experience. Niall -- ned Productions Limited Consulting http://www.nedproductions.biz/ http://ie.linkedin.com/in/nialldouglas/