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view tools/binding/llvmsample3.d @ 1479:4f7d50c744ed
Rewrite `StructLiteralExp::toElem` to store individual fields instead of
generating a constant to fill the entire struct with a single `store`.
This is much more efficient at compile time (fixing #320) and vastly reduces
the size of the emitted code. Since LLVM no longer needs to keep the data for
all fields in "registers" until the store happens, it should also be more
efficient at run time in cases where the fields aren't assigned with constants.
There's also some code clean-up by removing duplicated logic.
author | Frits van Bommel <fvbommel wxs.nl> |
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date | Sat, 06 Jun 2009 20:16:13 +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; }