DXILRootSignature.cpp File Reference

#include "DXILRootSignature.h"
#include "DirectX.h"
#include "llvm/ADT/StringSwitch.h"
#include "llvm/ADT/Twine.h"
#include "llvm/Analysis/DXILMetadataAnalysis.h"
#include "llvm/BinaryFormat/DXContainer.h"
#include "llvm/Frontend/HLSL/RootSignatureMetadata.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/DiagnosticInfo.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/Metadata.h"
#include "llvm/IR/Module.h"
#include "llvm/InitializePasses.h"
#include "llvm/MC/DXContainerRootSignature.h"
#include "llvm/Pass.h"
#include "llvm/Support/Error.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/ScopedPrinter.h"
#include "llvm/Support/raw_ostream.h"
#include <cstdint>

Go to the source code of this file.

Functions
static std::optional< uint32_t >	extractMdIntValue (MDNode *Node, unsigned int OpId)
static bool	reportError (LLVMContext *Ctx, Twine Message, DiagnosticSeverity Severity=DS_Error)
static SmallDenseMap< const Function *, mcdxbc::RootSignatureDesc >	analyzeModule (Module &M)
	INITIALIZE_PASS_BEGIN (RootSignatureAnalysisWrapper, "dxil-root-signature-analysis", "DXIL Root Signature Analysis", true, true) INITIALIZE_PASS_END(RootSignatureAnalysisWrapper

Variables
dxil root signature	analysis
dxil root signature DXIL Root Signature	Analysis
dxil root signature DXIL Root Signature	true

Function Documentation

analyzeModule()

static SmallDenseMap< const Function *, mcdxbc::RootSignatureDesc > analyzeModule ( Module &  M )

static

Root Signature are specified as following in the metadata:

!dx.rootsignatures = !{!2} ; list of function/root signature pairs !2 = !{ ptr @main, !3 } ; function, root signature !3 = !{ !4, !5, !6, !7 } ; list of root signature elements

So for each MDNode inside dx.rootsignatures NamedMDNode (the Root parameter of this function), the parsing process needs to loop through each of its operands and process the function, signature pair.

Definition at line 53 of file DXILRootSignature.cpp.

References extractMdIntValue(), F, llvm::MDOperand::get(), llvm::ValueAsMetadata::getValue(), llvm::handleAllErrors(), llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::insert(), llvm::NamedMDNode::operands(), llvm::hlsl::rootsig::MetadataParser::ParseRootSignature(), reportError(), and llvm::Expected< T >::takeError().

Referenced by llvm::dxil::RootSignatureAnalysis::run(), and llvm::dxil::RootSignatureAnalysisWrapper::runOnModule().

extractMdIntValue()

static std::optional< uint32_t > extractMdIntValue ( MDNode *  Node, unsigned int  OpId  )

static

Definition at line 38 of file DXILRootSignature.cpp.

Referenced by analyzeModule().

INITIALIZE_PASS_BEGIN()

INITIALIZE_PASS_BEGIN	(	RootSignatureAnalysisWrapper	,
		"dxil-root-signature-analysis"	,
		"DXIL Root Signature Analysis"	,
		true	,
		true
	)

reportError()

static bool reportError ( LLVMContext *  Ctx, Twine  Message, DiagnosticSeverity  Severity = DS_Error  )

static

Definition at line 46 of file DXILRootSignature.cpp.

References llvm::LLVMContext::diagnose().

Referenced by analyzeModule().

Variable Documentation

analysis

dxil root signature analysis

Definition at line 246 of file DXILRootSignature.cpp.

Analysis

dxil root signature DXIL Root Signature Analysis

Definition at line 247 of file DXILRootSignature.cpp.

true

dxil root signature DXIL Root Signature true

Definition at line 247 of file DXILRootSignature.cpp.