Mercurial > projects > ldc
view tools/binding/llvmsample3.d @ 1318:bac742d3a72d
Make sure this testcase keeps crashing with -O3.
Recent optimization improvements made LLVM realize the store-to-null was
unavoidable, so it deleted all of main() and replaced it with 'unreachable'.
Because the body of main() no longer even contained a return instruction,
calling it caused random code to be ran instead. This happened to be the code
that links in the ModuleInfo on my machine, which then returned "successfully".
author | Frits van Bommel <fvbommel wxs.nl> |
---|---|
date | Sat, 09 May 2009 00:55:47 +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; }