internal WebAssemblyCodegenCompilation(
DependencyAnalyzerBase <NodeFactory> dependencyGraph,
WebAssemblyCodegenNodeFactory nodeFactory,
IEnumerable <ICompilationRootProvider> roots,
ILProvider ilProvider,
DebugInformationProvider debugInformationProvider,
Logger logger,
WebAssemblyCodegenConfigProvider options)
: base(dependencyGraph, nodeFactory, GetCompilationRoots(roots, nodeFactory), ilProvider, debugInformationProvider, null, logger)
{
NodeFactory = nodeFactory;
LLVMModuleRef m = LLVMModuleRef.CreateWithName("netscripten");
m.Target = "wasm32-unknown-emscripten";
// https://llvm.org/docs/LangRef.html#langref-datalayout
// e litte endian, mangled names
// m:e ELF mangling
// p:32:32 pointer size 32, abi 32
// i64:64 64 ints aligned 64
// n:32:64 native widths
// S128 natural alignment of stack
m.DataLayout = "e-m:e-p:32:32-i64:64-n32:64-S128";
Module = m;
TargetData = m.CreateExecutionEngine().TargetData;
Options = options;
DIBuilder = Module.CreateDIBuilder();
DebugMetadataMap = new Dictionary <string, DebugMetadata>();
}
public void SizeTest()
{
LLVMModuleRef m = LLVMModuleRef.CreateWithName("netscripten");
LLVMExecutionEngineRef engineRef = m.CreateExecutionEngine();
LLVMTargetDataRef target = engineRef.TargetData;
LLVMTypeRef testStruct = LLVMTypeRef.CreateStruct(
new[]
{
LLVMTypeRef.Int16,
LLVMTypeRef.Int32
}, true);
Assert.AreEqual(48, target.SizeOfTypeInBits(testStruct));
Assert.AreEqual(6, target.StoreSizeOfType(testStruct));
Assert.AreEqual(6, target.ABISizeOfType(testStruct));
}
public void OffsetTest()
{
LLVMModuleRef m = LLVMModuleRef.CreateWithName("netscripten");
LLVMExecutionEngineRef engineRef = m.CreateExecutionEngine();
LLVMTargetDataRef target = engineRef.TargetData;
LLVMTypeRef testStruct = LLVMTypeRef.CreateStruct(
new[]
{
LLVMTypeRef.Int16,
LLVMTypeRef.Int32
}, true);
Assert.AreEqual(0, target.OffsetOfElement(testStruct, 0));
Assert.AreEqual(2, target.OffsetOfElement(testStruct, 1));
Assert.AreEqual(target.ElementAtOffset(testStruct, 0), 0);
Assert.AreEqual(target.ElementAtOffset(testStruct, 2), 1);
}
public void AlignmentTest()
{
LLVMModuleRef m = LLVMModuleRef.CreateWithName("netscripten");
m.Target = "wasm32-unknown-unknown-wasm";
m.DataLayout = "e-m:e-p:32:32-i64:64-n32:64-S128";
LLVMExecutionEngineRef engineRef = m.CreateExecutionEngine();
LLVMTargetDataRef target = engineRef.TargetData;
LLVMTypeRef testStruct = LLVMTypeRef.CreateStruct(
new[]
{
LLVMTypeRef.Int16,
LLVMTypeRef.Int32
}, true);
Assert.AreEqual(1, target.ABIAlignmentOfType(testStruct));
Assert.AreEqual(1, target.CallFrameAlignmentOfType(testStruct));
Assert.AreEqual(8, target.PreferredAlignmentOfType(testStruct));
LLVMValueRef global = m.AddGlobal(LLVMTypeRef.CreatePointer(LLVMTypeRef.Int8, 0), "someGlobal");
Assert.AreEqual(4, target.PreferredAlignmentOfGlobal(global));
}