Update SwiftShader to April code dump.
April code dump from Transgaming. Adds new shader compiler.
diff --git a/src/LLVM/lib/Analysis/DbgInfoPrinter.cpp b/src/LLVM/lib/Analysis/DbgInfoPrinter.cpp
new file mode 100644
index 0000000..cd832ab
--- /dev/null
+++ b/src/LLVM/lib/Analysis/DbgInfoPrinter.cpp
@@ -0,0 +1,224 @@
+//===- DbgInfoPrinter.cpp - Print debug info in a human readable form ------==//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements a pass that prints instructions, and associated debug
+// info:
+//
+// - source/line/col information
+// - original variable name
+// - original type name
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/Pass.h"
+#include "llvm/Function.h"
+#include "llvm/IntrinsicInst.h"
+#include "llvm/Metadata.h"
+#include "llvm/Module.h"
+#include "llvm/Assembly/Writer.h"
+#include "llvm/Analysis/DebugInfo.h"
+#include "llvm/Analysis/Passes.h"
+#include "llvm/Support/CFG.h"
+#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/raw_ostream.h"
+
+using namespace llvm;
+
+static cl::opt<bool>
+PrintDirectory("print-fullpath",
+ cl::desc("Print fullpath when printing debug info"),
+ cl::Hidden);
+
+namespace {
+ class PrintDbgInfo : public FunctionPass {
+ raw_ostream &Out;
+ void printVariableDeclaration(const Value *V);
+ public:
+ static char ID; // Pass identification
+ PrintDbgInfo() : FunctionPass(ID), Out(errs()) {
+ initializePrintDbgInfoPass(*PassRegistry::getPassRegistry());
+ }
+
+ virtual bool runOnFunction(Function &F);
+ virtual void getAnalysisUsage(AnalysisUsage &AU) const {
+ AU.setPreservesAll();
+ }
+ };
+ char PrintDbgInfo::ID = 0;
+}
+
+INITIALIZE_PASS(PrintDbgInfo, "print-dbginfo",
+ "Print debug info in human readable form", false, false)
+
+FunctionPass *llvm::createDbgInfoPrinterPass() { return new PrintDbgInfo(); }
+
+/// Find the debug info descriptor corresponding to this global variable.
+static Value *findDbgGlobalDeclare(GlobalVariable *V) {
+ const Module *M = V->getParent();
+ NamedMDNode *NMD = M->getNamedMetadata("llvm.dbg.gv");
+ if (!NMD)
+ return 0;
+
+ for (unsigned i = 0, e = NMD->getNumOperands(); i != e; ++i) {
+ DIDescriptor DIG(cast<MDNode>(NMD->getOperand(i)));
+ if (!DIG.isGlobalVariable())
+ continue;
+ if (DIGlobalVariable(DIG).getGlobal() == V)
+ return DIG;
+ }
+ return 0;
+}
+
+/// Find the debug info descriptor corresponding to this function.
+static Value *findDbgSubprogramDeclare(Function *V) {
+ const Module *M = V->getParent();
+ NamedMDNode *NMD = M->getNamedMetadata("llvm.dbg.sp");
+ if (!NMD)
+ return 0;
+
+ for (unsigned i = 0, e = NMD->getNumOperands(); i != e; ++i) {
+ DIDescriptor DIG(cast<MDNode>(NMD->getOperand(i)));
+ if (!DIG.isSubprogram())
+ continue;
+ if (DISubprogram(DIG).getFunction() == V)
+ return DIG;
+ }
+ return 0;
+}
+
+/// Finds the llvm.dbg.declare intrinsic corresponding to this value if any.
+/// It looks through pointer casts too.
+static const DbgDeclareInst *findDbgDeclare(const Value *V) {
+ V = V->stripPointerCasts();
+
+ if (!isa<Instruction>(V) && !isa<Argument>(V))
+ return 0;
+
+ const Function *F = NULL;
+ if (const Instruction *I = dyn_cast<Instruction>(V))
+ F = I->getParent()->getParent();
+ else if (const Argument *A = dyn_cast<Argument>(V))
+ F = A->getParent();
+
+ for (Function::const_iterator FI = F->begin(), FE = F->end(); FI != FE; ++FI)
+ for (BasicBlock::const_iterator BI = (*FI).begin(), BE = (*FI).end();
+ BI != BE; ++BI)
+ if (const DbgDeclareInst *DDI = dyn_cast<DbgDeclareInst>(BI))
+ if (DDI->getAddress() == V)
+ return DDI;
+
+ return 0;
+}
+
+static bool getLocationInfo(const Value *V, std::string &DisplayName,
+ std::string &Type, unsigned &LineNo,
+ std::string &File, std::string &Dir) {
+ DICompileUnit Unit;
+ DIType TypeD;
+
+ if (GlobalVariable *GV = dyn_cast<GlobalVariable>(const_cast<Value*>(V))) {
+ Value *DIGV = findDbgGlobalDeclare(GV);
+ if (!DIGV) return false;
+ DIGlobalVariable Var(cast<MDNode>(DIGV));
+
+ StringRef D = Var.getDisplayName();
+ if (!D.empty())
+ DisplayName = D;
+ LineNo = Var.getLineNumber();
+ Unit = Var.getCompileUnit();
+ TypeD = Var.getType();
+ } else if (Function *F = dyn_cast<Function>(const_cast<Value*>(V))){
+ Value *DIF = findDbgSubprogramDeclare(F);
+ if (!DIF) return false;
+ DISubprogram Var(cast<MDNode>(DIF));
+
+ StringRef D = Var.getDisplayName();
+ if (!D.empty())
+ DisplayName = D;
+ LineNo = Var.getLineNumber();
+ Unit = Var.getCompileUnit();
+ TypeD = Var.getType();
+ } else {
+ const DbgDeclareInst *DDI = findDbgDeclare(V);
+ if (!DDI) return false;
+ DIVariable Var(cast<MDNode>(DDI->getVariable()));
+
+ StringRef D = Var.getName();
+ if (!D.empty())
+ DisplayName = D;
+ LineNo = Var.getLineNumber();
+ Unit = Var.getCompileUnit();
+ TypeD = Var.getType();
+ }
+
+ StringRef T = TypeD.getName();
+ if (!T.empty())
+ Type = T;
+ StringRef F = Unit.getFilename();
+ if (!F.empty())
+ File = F;
+ StringRef D = Unit.getDirectory();
+ if (!D.empty())
+ Dir = D;
+ return true;
+}
+
+void PrintDbgInfo::printVariableDeclaration(const Value *V) {
+ std::string DisplayName, File, Directory, Type;
+ unsigned LineNo = 0;
+
+ if (!getLocationInfo(V, DisplayName, Type, LineNo, File, Directory))
+ return;
+
+ Out << "; ";
+ WriteAsOperand(Out, V, false, 0);
+ if (isa<Function>(V))
+ Out << " is function " << DisplayName
+ << " of type " << Type << " declared at ";
+ else
+ Out << " is variable " << DisplayName
+ << " of type " << Type << " declared at ";
+
+ if (PrintDirectory)
+ Out << Directory << "/";
+
+ Out << File << ":" << LineNo << "\n";
+}
+
+bool PrintDbgInfo::runOnFunction(Function &F) {
+ if (F.isDeclaration())
+ return false;
+
+ Out << "function " << F.getName() << "\n\n";
+
+ for (Function::iterator I = F.begin(), E = F.end(); I != E; ++I) {
+ BasicBlock *BB = I;
+
+ if (I != F.begin() && (pred_begin(BB) == pred_end(BB)))
+ // Skip dead blocks.
+ continue;
+
+ Out << BB->getName();
+ Out << ":";
+
+ Out << "\n";
+
+ for (BasicBlock::const_iterator i = BB->begin(), e = BB->end();
+ i != e; ++i) {
+
+ printVariableDeclaration(i);
+
+ if (const User *U = dyn_cast<User>(i)) {
+ for(unsigned i=0;i<U->getNumOperands();i++)
+ printVariableDeclaration(U->getOperand(i));
+ }
+ }
+ }
+ return false;
+}
