similar to: [LLVMdev] Converting back to SSA form

Thanks John, The reason I want to do this is that register allocator works only on SSA form, and if you instrument regallocated code with non-regallocated machine instructions, then you cannot regallocate the result. A workaround is to assign physical registers while doing the instrumentation, which I don't think is as easy as the above. On Tue, Sep 23, 2014 at 11:01 AM, John Criswell

Thank you very much John. With an environment variable I need to take some special care, but it looks like the only way to go. On Sun, Mar 30, 2014 at 11:07 AM, John Criswell <criswell at illinois.edu>wrote: > Dear Rahman, > > I think your best option is to modify the code in libLTO so that it runs > your pass when you want it to run. I believe the file you want to modify

Hi, I am trying to test if disabling function (entry) alignment has any effect on performance. On my x86 machine, all functions seem to get aligned to 16-bytes. I know that GCC provides a flag (-fno-align-functions) to disable function alignment. However, I could not find the similar flag for clang. According to the following quote from LLVM doc, clang delegates the job to the target in case no

On Jan 12, 2015, at 2:45 PM, Rafael Espíndola <rafael.espindola at gmail.com> wrote: > On 10 January 2015 at 17:43, Rahman Lavaee <r.lavaee at gmail.com> wrote: >> Hi, >> I'm building LLVM on Mac OS 10.10 and I'm having trouble making LTO work. >> The system linker dumps the following information when I executed "ld -v" >> >>

Hi, I'm building LLVM on Mac OS 10.10 and I'm having trouble making LTO work. The system linker dumps the following information when I executed "ld -v" @(#)PROGRAM:ld PROJECT:ld64-241.9 configured to support archs: armv6 armv7 armv7s arm64 i386 x86_64 x86_64h armv6m armv7m armv7em LTO support using: LLVM version 3.4.2 which tells me that it is correctly pointing to the LLVM

I am trying to use CloneFunction to clone every IR function in a program, give the cloned versions a prefix and call the clones from the original functions (redirect the calls). Surprisingly, I see that after the LTO optimizations, the number of machine basic blocks in the two functions differ in some cases. Is this reasonable at all, given that the two functions must be exactly the same in the

James, Thanks for the detailed response. Please see my thoughts inline. On Thu, Sep 17, 2020 at 12:33 AM James Henderson < jh7370.2008 at my.bristol.ac.uk> wrote: > Hi Rahman, > > Traditionally, the ability to read sections is a feature added to > llvm-readobj/llvm-readelf. For some sections, it delegates to methods in > places like the Object library and BinaryFormat, but

Hi, I am finding it difficult to see how I can run an IR instrumentation pass after "all" IR passes. I previously used opt to run my pass after linking all the llvm bitcode files and then ran llc. I found out that llc runs some other Function passes which depend on the target. For example, tail calls are only supported in x86 under some circumstances. Then I tried lto and link time

Hi All, Following up on https://lists.llvm.org/pipermail/llvm-dev/2020-July/143512.html, and https://reviews.llvm.org/D85408, we would like to consider a design which allows external tools to read the structured contents of the .bb_addr_map section with library calls into an LLVM library. At the same time, we need to have tools/obj2yaml tests in place for bb_addr_map. So it sounds like the

Hi, I have written a code layout feedback directed optimization pass, which currently works for basic block reordering and function reordering. It very effectively improves the speedup (we could improve Python by 30%). The profiling method is window based context sensitive which is based on reference affinity (

I'm getting some odd behavior out of MBP and was hoping someone knowledge of the code might be able to give some guidance. Fair warning, I'm trying to describe a problem in code I don't really understand, so if something doesn't make sense, assume I misunderstood something. The problematic case I'm seeing is that cold blocks are being placed between the preheader and

>Exceptions >All eh pads are grouped together regardless of their coldness and are part of the original function. There are outstanding issues with splitting eh pads if they reside in separate sections in the binary. This remains as part of future work. Can you elaborate more on the outstanding issues with splitting eh pads? From my dip into the unwind map in gcc_except_table the

In addition to an IR block id or probe Id, we’ll also need to know the inline context of a probe if it comes from an inlinee. The current pseudo probe encoding is based on a DFS walk of the inline tree. A MIR BB may contain probes from different inlinees, and we may need to extend the BB-info format for encode the inline contexts there. I’m happy to work with you on a encoding format that can be

Peepz, I was looking into how script.aculo.us handles effect to write a tutorial and for a current project I wanted to make transition between PAIR effects possible. These PAIR effects are (Appear/Fade, SlideUp/SlideDown, BlindUp/BlindDown) the effect that toggle can handle. script.aculo.us calls queue.loop each 40 milliseconds, and that calls all the effect.loop for all effects in the

Dear All, How can I sort a data frame (using one of the column)? Thanks for your support. Regards. Abd. Rahman Kassim (PhD) Head Forest Ecology Branch Forest Management & Ecology Program Forestry and Conservation Division Forest Research Institute Malaysia Kepong 52109 Selangor, Malaysia ***************************************** Checked by TrendMicro Interscan Messaging Security. For any

Dear All, Need some help in polynomials transformation to get the coefficients. I have tried "poly.transform" as applied in S-plus but it does not work. Thanks in advanced for any helps. Regards. Abd. Rahman Kassim (PhD) Head Forest Ecology Branch Forest Management & Ecology Program Forestry and Conservation Division Forest Research Institute Malaysia Kepong 52109 Selangor,

Dear All, I'm trying to attach a legend outside the plot (Inside plot OK), but failed. Any help is very much appreciated. Thanks. Abd. Rahman Kassim, PhD Forest Management & Ecology Program Forestry & Conservation Division Forest Research Institute Malaysia Kepong 52109 Selangor MALAYSIA ***************************************** Checked by TrendMicro Interscan Messaging Security.

Hi, i have a problem with the the SlideDown and SlideUp effects. Since a similiar problem is also visible on the script.aculo.us homepage, i''m going to explain it this way. - Go to http://script.aculo.us/ - On the main site below "visual effects", click "Advanced options", the sub panel will scroll down. - Hit the close button, and while the panel is still

Hi, we are building couple of application that will need to communicate with each other, because there where special in what they do, I will explain it with some general application: For example, you have a projectmanagement application, where you can store messages, milestones, enc, and you have a online time registration application. Now you want to be able to setup the task for each

Dear All, I have a question on overlaying a filled.contour (e.g. on soil properties data) and contour (by elevation) in one graph. Both have the same z matrix dimension. I'm able to overlay both graph, but the plots dimension did not overlap well on the same plots. How can I have both filled.contour and contour on the same graph? The commands that I have written are as follows: