view tools/binding/llvmsample3.d @ 1650:40bd4a0d4870

Update to work with LLVM 2.7. Removed use of dyn_cast, llvm no compiles without exceptions and rtti by default. We do need exceptions for the libconfig stuff, but rtti isn't necessary (anymore). Debug info needs to be rewritten, as in LLVM 2.7 the format has completely changed. To have something to look at while rewriting, the old code has been wrapped inside #ifndef DISABLE_DEBUG_INFO , this means that you have to define this to compile at the moment. Updated tango 0.99.9 patch to include updated EH runtime code, which is needed for LLVM 2.7 as well.
author Tomas Lindquist Olsen
date Wed, 19 May 2010 12:42:32 +0200
parents 1ba61de8796b
children
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// simple example that shows off getting D wrappers from C values.
module llvmsample3;

import llvm.c.Core;
import llvm.llvm;

void main()
{
    auto m = new Module("sample3");

    // global int32
    auto gi = m.addGlobal(Type.Int32, "myint");
    gi.initializer = ConstantInt.GetU(Type.Int32, 42);

    // this is not a cached value, it's recreated dynamically
    auto _i = gi.initializer;
    auto ci = cast(ConstantInt)_i;
    assert(ci !is null);
    ci.dump;

    // global struct
    auto st = StructType.Get([Type.Double,Type.Double,Type.Double]);
    auto gs = m.addGlobal(st, "mystruct");
    auto elems = new Constant[3];
    foreach(i,ref e; elems)
        e = ConstantReal.Get(Type.Double, i+1);
    gs.initializer = ConstantStruct.Get(elems);

    // again this is not a cached value.
    auto s = gs.initializer;
    auto cs = cast(ConstantStruct)s;
    assert(cs !is null);

    cs.dump;
}