search for: flagset

...rkable scenarios are: (A) The brittle optimization's invariant is "impossible to [break] for standard semantic/structural reasons." Therefore no transform ever needs to know anything about it. The result is a "robust" optimization, and no need for the supported-optimizations flagset. (B) The brittle optimization's invariant is, in fact, brittle. Any transform that doesn't explicitly preserve the invariant *can and will* break the invariant. Therefore, every transform must have its own whitelist of "invariants I know I don't break." Any flag in the support...

Some answers to my questions, a first version of my script and more questions ;) Am 03.08.20 um 18:15 schrieb Ralf Becker: > Currently looking into the following questions: > > - can I get the rfc 5423 type of event somehow (obviously I can set it > on the event myself depending of the function called) event.name > - looking at the example code, it looks like it can be called for

On Mon, Dec 3, 2018 at 11:49 PM John McCall <jmccall at apple.com> wrote: > Piotr's proposal unfortunately doesn't give us a good name for the class > of optimizations that require being listed in supported_optimizations. > In earlier discussions I called them "brittle", but I can understand why > nobody wants to call their optimization that, so let's call

Hi Lang & Renato, I eventually set up a panda board with latest linaro delivery (eabi-hf). I did some experiments using my own compiler and LLVM 3.2 as back-end. I use same flagset for my compiler (front-end) and just invoke llc with and without vmlx-forwarding attribute. So base arguments to llc are: llc -march=arm -mcpu=cortex-a9 -mattr=+neon -float-abi=hard to which I added -mattr=-vmlx-forwarding to disable vmlx forwarding for cortex-a9. When I DISABLE vmlx forwarding...

Hi Sebastien, How many extra vmlas did you see in 433.milc due to disabling -vmlx-forwarding? As I mentioned earlier, I saw only two additional integer vmlx instructions when I tested. Could you send me your 433.milc compile setup? (os, flags, compiler version, etc.). I'd like to try to reproduce your results. Cheers, Lang. On Tue, Feb 12, 2013 at 9:05 AM, Renato Golin <renato.golin at

On 12 February 2013 16:56, Sebastien DELDON-GNB <sebastien.deldon at st.com>wrote: > If this helps taking your decision, there are at least two benchmarks for > which disabling vmlx-forwarding makes a significant difference. > I think Evan's worry was to base this decision on visible and comprehensible benchmarks, such as the test-suite. If I get lucky I may be able to run