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https://github.com/c64scene-ar/llvm-6502.git
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Add support for variable argument functions!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6044 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
parent
374344c0cc
commit
18ac3c8914
@ -11,6 +11,7 @@
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#include "llvm/Instructions.h"
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#include "llvm/Pass.h"
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#include "llvm/SymbolTable.h"
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#include "llvm/Intrinsics.h"
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#include "llvm/SlotCalculator.h"
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#include "llvm/Analysis/FindUsedTypes.h"
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#include "llvm/Analysis/ConstantsScanner.h"
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@ -117,6 +118,7 @@ namespace {
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void visitLoadInst (LoadInst &I);
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void visitStoreInst (StoreInst &I);
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void visitGetElementPtrInst(GetElementPtrInst &I);
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void visitVarArgInst(VarArgInst &I);
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void visitInstruction(Instruction &I) {
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std::cerr << "C Writer does not know about " << I;
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@ -530,12 +532,10 @@ void CWriter::printModule(Module *M) {
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FoundNames.insert(I->getName()); // Otherwise, keep track of name
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}
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// printing stdlib inclusion
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//Out << "#include <stdlib.h>\n";
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// get declaration for alloca
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Out << "/* Provide Declarations */\n";
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generateAllocaDecl(Out);
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Out << "#include <stdarg.h>\n";
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// Provide a definition for null if one does not already exist,
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// and for `bool' if not compiling with a C++ compiler.
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@ -573,9 +573,10 @@ void CWriter::printModule(Module *M) {
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needsMalloc = true;
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for (Module::iterator I = M->begin(), E = M->end(); I != E; ++I) {
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// If the function is external and the name collides don't print it.
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// Sometimes the bytecode likes to have multiple "declerations" for
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// Sometimes the bytecode likes to have multiple "declarations" for
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// external functions
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if (I->hasInternalLinkage() || !MangledGlobals.count(I)){
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if ((I->hasInternalLinkage() || !MangledGlobals.count(I)) &&
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!I->getIntrinsicID()) {
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printFunctionSignature(I, true);
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Out << ";\n";
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}
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@ -1001,6 +1002,35 @@ void CWriter::visitCastInst(CastInst &I) {
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}
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void CWriter::visitCallInst(CallInst &I) {
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// Handle intrinsic function calls first...
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if (Function *F = I.getCalledFunction())
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if (LLVMIntrinsic::ID ID = (LLVMIntrinsic::ID)F->getIntrinsicID()) {
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switch (ID) {
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default: assert(0 && "Unknown LLVM intrinsic!");
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case LLVMIntrinsic::va_start:
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Out << "va_start((va_list)*";
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writeOperand(I.getOperand(1));
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Out << ", ";
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// Output the last argument to the enclosing function...
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writeOperand(&I.getParent()->getParent()->aback());
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Out << ")";
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return;
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case LLVMIntrinsic::va_end:
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Out << "va_end((va_list)*";
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writeOperand(I.getOperand(1));
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Out << ")";
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return;
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case LLVMIntrinsic::va_copy:
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Out << "va_copy((va_list)*";
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writeOperand(I.getOperand(1));
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Out << ", (va_list)";
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writeOperand(I.getOperand(2));
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Out << ")";
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return;
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}
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}
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const PointerType *PTy = cast<PointerType>(I.getCalledValue()->getType());
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const FunctionType *FTy = cast<FunctionType>(PTy->getElementType());
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const Type *RetTy = FTy->getReturnType();
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@ -1123,6 +1153,15 @@ void CWriter::visitGetElementPtrInst(GetElementPtrInst &I) {
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printIndexingExpression(I.getPointerOperand(), I.idx_begin(), I.idx_end());
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}
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void CWriter::visitVarArgInst(VarArgInst &I) {
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Out << "va_arg((va_list)*";
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writeOperand(I.getOperand(0));
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Out << ", ";
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printType(Out, I.getType(), "", /*ignoreName*/false, /*namedContext*/false);
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Out << ")";
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}
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//===----------------------------------------------------------------------===//
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// External Interface declaration
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//===----------------------------------------------------------------------===//
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@ -11,6 +11,7 @@
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#include "llvm/Instructions.h"
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#include "llvm/Pass.h"
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#include "llvm/SymbolTable.h"
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#include "llvm/Intrinsics.h"
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#include "llvm/SlotCalculator.h"
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#include "llvm/Analysis/FindUsedTypes.h"
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#include "llvm/Analysis/ConstantsScanner.h"
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@ -117,6 +118,7 @@ namespace {
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void visitLoadInst (LoadInst &I);
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void visitStoreInst (StoreInst &I);
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void visitGetElementPtrInst(GetElementPtrInst &I);
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void visitVarArgInst(VarArgInst &I);
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void visitInstruction(Instruction &I) {
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std::cerr << "C Writer does not know about " << I;
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@ -530,12 +532,10 @@ void CWriter::printModule(Module *M) {
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FoundNames.insert(I->getName()); // Otherwise, keep track of name
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}
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// printing stdlib inclusion
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//Out << "#include <stdlib.h>\n";
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// get declaration for alloca
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Out << "/* Provide Declarations */\n";
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generateAllocaDecl(Out);
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Out << "#include <stdarg.h>\n";
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// Provide a definition for null if one does not already exist,
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// and for `bool' if not compiling with a C++ compiler.
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@ -573,9 +573,10 @@ void CWriter::printModule(Module *M) {
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needsMalloc = true;
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for (Module::iterator I = M->begin(), E = M->end(); I != E; ++I) {
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// If the function is external and the name collides don't print it.
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// Sometimes the bytecode likes to have multiple "declerations" for
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// Sometimes the bytecode likes to have multiple "declarations" for
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// external functions
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if (I->hasInternalLinkage() || !MangledGlobals.count(I)){
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if ((I->hasInternalLinkage() || !MangledGlobals.count(I)) &&
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!I->getIntrinsicID()) {
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printFunctionSignature(I, true);
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Out << ";\n";
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}
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@ -1001,6 +1002,35 @@ void CWriter::visitCastInst(CastInst &I) {
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}
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void CWriter::visitCallInst(CallInst &I) {
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// Handle intrinsic function calls first...
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if (Function *F = I.getCalledFunction())
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if (LLVMIntrinsic::ID ID = (LLVMIntrinsic::ID)F->getIntrinsicID()) {
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switch (ID) {
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default: assert(0 && "Unknown LLVM intrinsic!");
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case LLVMIntrinsic::va_start:
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Out << "va_start((va_list)*";
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writeOperand(I.getOperand(1));
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Out << ", ";
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// Output the last argument to the enclosing function...
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writeOperand(&I.getParent()->getParent()->aback());
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Out << ")";
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return;
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case LLVMIntrinsic::va_end:
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Out << "va_end((va_list)*";
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writeOperand(I.getOperand(1));
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Out << ")";
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return;
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case LLVMIntrinsic::va_copy:
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Out << "va_copy((va_list)*";
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writeOperand(I.getOperand(1));
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Out << ", (va_list)";
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writeOperand(I.getOperand(2));
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Out << ")";
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return;
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}
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}
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const PointerType *PTy = cast<PointerType>(I.getCalledValue()->getType());
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const FunctionType *FTy = cast<FunctionType>(PTy->getElementType());
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const Type *RetTy = FTy->getReturnType();
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@ -1123,6 +1153,15 @@ void CWriter::visitGetElementPtrInst(GetElementPtrInst &I) {
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printIndexingExpression(I.getPointerOperand(), I.idx_begin(), I.idx_end());
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}
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void CWriter::visitVarArgInst(VarArgInst &I) {
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Out << "va_arg((va_list)*";
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writeOperand(I.getOperand(0));
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Out << ", ";
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printType(Out, I.getType(), "", /*ignoreName*/false, /*namedContext*/false);
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Out << ")";
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}
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//===----------------------------------------------------------------------===//
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// External Interface declaration
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//===----------------------------------------------------------------------===//
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