What are /r/LLVM's favorite Products & Services?

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First you need a place to store it, assuming that's on the stack, use an alloca:

%o = alloca %Object, align 8

Now to store into the i8 in it, you have to get the element pointer (GEP) for it, and store into that like so:

%gep0 = getelementptr inbounds %Object* %o, i32 0, i32 0 store i8 97, i8* %gep0, align 1

To store into the double, that would be:

%gep4 = getelementptr inbounds %Object* %o, i32 0, i32 4 store double 1.0, double* %gep4, align 8

Loading from the i8 looks like this:

%v = load i8, i8* %gep0

You can read about GEPs here: http://llvm.org/docs/LangRef.html#getelementptr-instruction

Heres the default Hello World implementation: https://tio.run/##TY69CsIwFIX3PMWxU1My1J/BRejoGzioQ0ivErhNS3oVQXz2GKuoyxk@zh/ztUupGSViAx@EYrAM14dRbBDs5yvc4NdHuGJLzL3Bro/czg51XaiWHNtI8MsFmuEiY@nXlc745MOHdtaHUqu7Apxl/rPm1gpnEmLqKMiQH5TfOfNbrvB6Z6ZkbSbVOtdFkjdTj5Se

Take a look here: http://llvm.org/bugs/show_bug.cgi?id=11174

There is a patch; maybe you can apply it to your version.

Note: I found this by googling "G_ATOMIC_LOCK_FREE defined, but incapable of lock-free atomics" - it's a very useful first line strategy! Although I did then check this mailing list post which led me to the bug report.

There may be more to this problem - I would suggest looking at the other bugs and such referenced from that llvm bug report. I get the feeling it's something fixed in later versions though.

llvmlite.ir.Builder.if_then is a context manager, which means it's intended to be used with a `with` statement, in which you generate all the inner code inside of the `if_then` context.

The following is a minimal example that works for me:

https://repl.it/repls/HuskyJumboSoftwaresuite

import llvmlite.ir as L

module = L.Module(name="test") func = L.Function(module, L.FunctionType(L.VoidType(), ()), name="f") block = func.append_basic_block(name="entry") builder = L.IRBuilder(block)

# if x < 5 { # print(x) # }

x = builder.alloca(L.DoubleType(), name='x') less_than = builder.fcmp_ordered('<', x, L.Constant(L.DoubleType(), 5)) f_print = L.Function(module, L.FunctionType(L.VoidType(), [L.DoubleType()]), name='print')

with builder.if_then(less_than): builder.call(f_print, [builder.load(x)])

builder.ret_void()

print(module)

Figured it out. Per this Kratos guide, add this compiler option:

-- -DCMAKE_EXPORT_COMPILE_COMMANDS=ON

AFAIK there is no clang 5.1. Clang/LLVM share a source tree, the current release version will be 3.5. Your folder structures also suggests that you're trying to build a llvm-2.6 tree, this is very old.

What do you try to achieve? Do you explicitly require llvm-2.9 for your work, or is any (newer) llvm sufficient? If so, I suggest that you try building llvm/clang with this guide: http://clang.llvm.org/get_started.html