search for: locrecs

...t; attach to instructions? The general convention in LLVM is that > dropping metadata should not affect correctness, and if the location > record information is not best-effort or optional then metadata is > perhaps not the best way to represent it. Unfortunately not - all of our uses of locrecs are required for correctness. > > We're currently developing a scheme called "operand bundles" (more > details at [1], patches at [2]) that can be used to tag calls and > invokes with arbitrary values in a way that that they won't be dropped > by the optimizer. Th...

...onvention in LLVM is that >>> dropping metadata should not affect correctness, and if the location >>> record information is not best-effort or optional then metadata is >>> perhaps not the best way to represent it. >> >> Unfortunately not - all of our uses of locrecs are required for >> correctness. >This will need to be a function attribute or operand bundle when >upstreamed then, but that's a pretty simple change to make. I think switching from metadata to operand bundles wouldn't be a problem, assuming ³locrec² operand will have no effect...

On 9/3/15, 3:34 PM, "Mehdi Amini" <mehdi.amini at apple.com<mailto:mehdi.amini at apple.com>> wrote: Hi, On Sep 3, 2015, at 1:38 PM, Maksim Panchenko via llvm-dev <llvm-dev at lists.llvm.org<mailto:llvm-dev at lists.llvm.org>> wrote: Hi All, Our team at Hip-Hop Virtual Machine (http://hhvm.com<http://hhvm.com/>) have been experimenting with using LLVM