search for: elimant

Hi all! I¹m just implementing the Ullmann¹s algorithm for searching subgraph isomorphisms in graphNEL objects. The algorithm is running with smaller graphs, but when I¹m calling it i get an R error message saying that functions are nested too deeply in source code. I found out that the problem is in the so called refinement procedure of the algorithm which consists of 10 different functions,

On Feb 8, 2013, at 4:03 PM, Cameron Zwarich <zwarich at apple.com> wrote: > How much of the work is done here? I'd be happy to do the phi elimination part, since I basically did that for StrongPhiElimination (RIP). Any help would be appreciated. I did a bit of the easy stuff in 2-addr, it has a LIS = getAnalysisIfAvailable<LiveIntervals>() member that it sometimes updates. It

Since updating to LLVM 3.3, the system is generating attributes such as: attributes #0 = { nounwind "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf"="true" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "unsafe-fp-math"="false"

On Feb 8, 2013, at 4:20 PM, Jakob Stoklund Olesen <stoklund at 2pi.dk> wrote: > On Feb 8, 2013, at 4:03 PM, Cameron Zwarich <zwarich at apple.com> wrote: > >> How much of the work is done here? I'd be happy to do the phi elimination part, since I basically did that for StrongPhiElimination (RIP). > > Any help would be appreciated. > > I did a bit of the

Hi all, Is there a way to specify an attribute in a .ll file so that it will disable fp elim as if llc has been invoked with -disable-fp-elim on command line ? Thanks for your answers Best Regards Seb -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20120308/1d4875f1/attachment.html>

Hi, I have a function with: attributes #2 = { "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" } Yet when compiling it generates: https://gist.github.com/carlokok/7c3c98d2fd8c966671f40a5ad94f19d3 (Note how it checks fFinalizer before setting up ebp). It also has a: .loc 36 195 7 prologue_end before this happens How can I get llvm to do the frame

> On 2015-May-15, at 13:15, Teresa Johnson <tejohnson at google.com> wrote: > > What isn't clear to me is what all uses the available > externally linkage type currently - do you happen to know? It's used for the `inline` keyword in the C language. If you do a `git grep available_externally -- test/` inside a clang checkout you might find some other uses. $ cat

I just enabled a new algorithm for computing live intervals that doesn't depend on LiveVariables. The goal is to get rid of the LiveVariables analysis completely, but unfortunately PHI elimination and the two-address pass still use LiveVariables for some optimizations. They don't require it, they work just fine without it at -O0. They use it to generate better code in some cases. The

Hi, I’ve come back and updated my llvm toolset with modern code (my branch was about 1-2 years old) and now the llvm IR files produced by my front end no longer compile with llc. Here is a sample of llvm ir produced by my front end (it’s a standard version 3.1 build of swift from the swift.org open source website). ; ModuleID = 'main.ll' source_filename = "main.ll" target

How much of the work is done here? I'd be happy to do the phi elimination part, since I basically did that for StrongPhiElimination (RIP). IIRC you run into a lot of problems with NEON subregister defs, which might be fixed by your new direct LiveIntervals implementation. Cameron On Feb 8, 2013, at 3:41 PM, Jakob Stoklund Olesen <stoklund at 2pi.dk> wrote: > I just enabled a new

Hi, The RoboVM project recently upgraded from LLVM 3.3 to 3.4 and with the new version we are sometimes seeing "ran out of registers during register allocation" errors when targeting x86 32-bit that we haven't seen before. Nothing has changed in our bitcode generator. I have attached an IR file which can be used to reproduce this problem. The problem occurs with -O2 and

Caldarale, Charles R schrieb: > You have not provided us with the declaration for f(). Unless its argument is marked with the nocapture attribute, the compilation of g() cannot assume that f() has not retained a pointer to the x struct and is using it in the second call. > thanks a lot for the input. Yes, I forgot to that. The C function declaration would have been void f( struct a_b

Weird issue beyond my make-fu: When running the test-suite, this works fine: make TARGET_LLCFLAGS='-mcpu=cortex-a8 -mattr=+thumb2' TEST=nightly report But this fails: export TARGET_LLCFLAGS='-mcpu=cortex-a8 -mattr=+thumb2' make TEST=nightly report It looks like the following line from Makefile.rules is executed multiple times: TARGET_LLCFLAGS += -relocation-model=pic

Hi Mehdi, The ISO C specification does permit the math functions to modify ‘errno’, but I thought that the ‘-fno-math-errno’ option was to tell the optimiser to assume that ‘errno’ is not modified by the math functions. Explicitly providing ‘-fno-math-errno’ is not restoring the elision optimisation that was performed by LLVM v3.8, and this is really only a driver option, with ‘-fmath-errno’

That’s useful info, thanks. I think it will be useful for me to understand the connection, why this type of pointer is being emitted now. Do you have any suggestions where i can look to find the platform specific code that is making function pointers go into addrspace? Carl p.s. I am also working on passing the avr target flag to swift, but swift itself had (has?) limitations that make it

Hi everyone, We are using the llvm2cpp feature of LLVM in the VMKit project and there are some issues that I would like to point out. I made a tiny reproducible example here, to be clear: echo "int main() { return 0; };" > test.c && clang test.c -emit-llvm -c -o - | llc -march=cpp -cppgen=function -cppfor=main -o - This command is supposed to generate the C++ code to

Hi, everyone. I am new to llvm and I want to use C function “malloc" and “free" to do heap allocation, but It seems it is not a built-in function like ‘’printf” so I got an error “Unknown extern function”. I use ExecutionEngineer to run my main function and how should I do to make EE link the C library I want. Thanks.

I have this problem: google-perftools fails to detect stack for the code run under JIT called through C++ api from my program. It shows in profile like all program is one block with the name _init. I clearly do set the option NoFramePointerElim and I do see how it makes a difference in stack frame under gdb. When running some code in JIT in lli (with option -disable-fp-elim) google perftools

Hello! clang defines some AttributeSet, for example: attributes #0 = { nounwind uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf"="true" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "unsafe-fp-math"="false"

Hi LLVM developers, $ cat hello.c #include <stdio.h> void foo() { } int main(int argc, char *argv[]) {   for (int i = 0; i < 10; i++) {     printf("%d\n", i);   }   return 0; } $ /opt/llvm-svn/bin/clang --version Fedora clang version 6.0.0 (trunk 316308) (based on LLVM 6.0.0svn) Target: x86_64-redhat-linux Thread model: posix InstalledDir: /opt/llvm-svn/bin $