mirror of
https://github.com/ldc-developers/ldc.git
synced 2025-05-01 07:30:43 +03:00
1958e17734
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.
1439 lines
46 KiB
C++
1439 lines
46 KiB
C++
#include "gen/llvmhelpers.h"
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#include "gen/llvm.h"
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#include "llvm/Target/TargetMachineRegistry.h"
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#include "mars.h"
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#include "init.h"
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#include "id.h"
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#include "expression.h"
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#include "template.h"
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#include "module.h"
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#include "gen/tollvm.h"
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#include "gen/irstate.h"
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#include "gen/runtime.h"
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#include "gen/logger.h"
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#include "gen/arrays.h"
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#include "gen/dvalue.h"
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#include "gen/complex.h"
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#include "gen/classes.h"
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#include "gen/functions.h"
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#include "gen/typeinf.h"
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#include "gen/todebug.h"
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#include "gen/cl_options.h"
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#include "gen/nested.h"
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#include "ir/irmodule.h"
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#include <stack>
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/****************************************************************************************/
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/*////////////////////////////////////////////////////////////////////////////////////////
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// DYNAMIC MEMORY HELPERS
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////////////////////////////////////////////////////////////////////////////////////////*/
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LLValue* DtoNew(Type* newtype)
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{
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// get runtime function
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llvm::Function* fn = LLVM_D_GetRuntimeFunction(gIR->module, "_d_allocmemoryT");
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// get type info
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LLConstant* ti = DtoTypeInfoOf(newtype);
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assert(isaPointer(ti));
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// call runtime allocator
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LLValue* mem = gIR->CreateCallOrInvoke(fn, ti, ".gc_mem").getInstruction();
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// cast
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return DtoBitCast(mem, getPtrToType(DtoType(newtype)), ".gc_mem");
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}
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void DtoDeleteMemory(LLValue* ptr)
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{
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// get runtime function
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llvm::Function* fn = LLVM_D_GetRuntimeFunction(gIR->module, "_d_delmemory");
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// build args
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LLSmallVector<LLValue*,1> arg;
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arg.push_back(DtoBitCast(ptr, getVoidPtrType(), ".tmp"));
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// call
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gIR->CreateCallOrInvoke(fn, arg.begin(), arg.end());
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}
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void DtoDeleteClass(LLValue* inst)
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{
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// get runtime function
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llvm::Function* fn = LLVM_D_GetRuntimeFunction(gIR->module, "_d_delclass");
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// build args
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LLSmallVector<LLValue*,1> arg;
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arg.push_back(DtoBitCast(inst, fn->getFunctionType()->getParamType(0), ".tmp"));
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// call
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gIR->CreateCallOrInvoke(fn, arg.begin(), arg.end());
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}
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void DtoDeleteInterface(LLValue* inst)
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{
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// get runtime function
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llvm::Function* fn = LLVM_D_GetRuntimeFunction(gIR->module, "_d_delinterface");
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// build args
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LLSmallVector<LLValue*,1> arg;
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arg.push_back(DtoBitCast(inst, fn->getFunctionType()->getParamType(0), ".tmp"));
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// call
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gIR->CreateCallOrInvoke(fn, arg.begin(), arg.end());
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}
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void DtoDeleteArray(DValue* arr)
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{
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// get runtime function
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llvm::Function* fn = LLVM_D_GetRuntimeFunction(gIR->module, "_d_delarray");
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// build args
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LLSmallVector<LLValue*,2> arg;
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arg.push_back(DtoArrayLen(arr));
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arg.push_back(DtoBitCast(DtoArrayPtr(arr), getVoidPtrType(), ".tmp"));
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// call
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gIR->CreateCallOrInvoke(fn, arg.begin(), arg.end());
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}
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/****************************************************************************************/
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/*////////////////////////////////////////////////////////////////////////////////////////
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// ALLOCA HELPERS
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////////////////////////////////////////////////////////////////////////////////////////*/
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llvm::AllocaInst* DtoAlloca(Type* type, const char* name)
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{
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const llvm::Type* lltype = DtoType(type);
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llvm::AllocaInst* ai = new llvm::AllocaInst(lltype, name, gIR->topallocapoint());
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ai->setAlignment(type->alignsize());
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return ai;
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}
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llvm::AllocaInst* DtoArrayAlloca(Type* type, unsigned arraysize, const char* name)
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{
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const llvm::Type* lltype = DtoType(type);
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llvm::AllocaInst* ai = new llvm::AllocaInst(
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lltype, DtoConstUint(arraysize), name, gIR->topallocapoint());
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ai->setAlignment(type->alignsize());
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return ai;
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}
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llvm::AllocaInst* DtoRawAlloca(const llvm::Type* lltype, size_t alignment, const char* name)
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{
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llvm::AllocaInst* ai = new llvm::AllocaInst(lltype, name, gIR->topallocapoint());
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if (alignment)
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ai->setAlignment(alignment);
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return ai;
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}
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/****************************************************************************************/
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/*////////////////////////////////////////////////////////////////////////////////////////
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// ASSERT HELPER
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////////////////////////////////////////////////////////////////////////////////////////*/
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void DtoAssert(Module* M, Loc loc, DValue* msg)
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{
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std::vector<LLValue*> args;
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// func
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const char* fname = msg ? "_d_assert_msg" : "_d_assert";
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llvm::Function* fn = LLVM_D_GetRuntimeFunction(gIR->module, fname);
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// msg param
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if (msg)
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{
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args.push_back(msg->getRVal());
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}
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// file param
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// we might be generating for an imported template function
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const char* cur_file = M->srcfile->name->toChars();
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if (loc.filename && strcmp(loc.filename, cur_file) != 0)
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{
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args.push_back(DtoConstString(loc.filename));
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}
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else
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{
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IrModule* irmod = getIrModule(M);
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args.push_back(DtoLoad(irmod->fileName));
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}
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// line param
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LLConstant* c = DtoConstUint(loc.linnum);
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args.push_back(c);
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// call
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gIR->CreateCallOrInvoke(fn, args.begin(), args.end());
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// end debug info
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if (global.params.symdebug)
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DtoDwarfFuncEnd(gIR->func()->decl);
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// after assert is always unreachable
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gIR->ir->CreateUnreachable();
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}
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/****************************************************************************************/
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/*////////////////////////////////////////////////////////////////////////////////////////
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// LABEL HELPER
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////////////////////////////////////////////////////////////////////////////////////////*/
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LabelStatement* DtoLabelStatement(Identifier* ident)
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{
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FuncDeclaration* fd = gIR->func()->decl;
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FuncDeclaration::LabelMap::iterator iter = fd->labmap.find(ident->toChars());
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if (iter == fd->labmap.end())
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{
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if (fd->returnLabel && fd->returnLabel->ident->equals(ident))
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{
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assert(fd->returnLabel->statement);
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return fd->returnLabel->statement;
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}
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return NULL;
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}
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return iter->second;
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}
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/****************************************************************************************/
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/*////////////////////////////////////////////////////////////////////////////////////////
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// GOTO HELPER
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////////////////////////////////////////////////////////////////////////////////////////*/
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void DtoGoto(Loc loc, Identifier* target, TryFinallyStatement* sourceFinally)
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{
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assert(!gIR->scopereturned());
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LabelStatement* lblstmt = DtoLabelStatement(target);
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if(!lblstmt) {
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error(loc, "the label %s does not exist", target->toChars());
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fatal();
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}
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// if the target label is inside inline asm, error
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if(lblstmt->asmLabel) {
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error(loc, "cannot goto to label %s inside an inline asm block", target->toChars());
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fatal();
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}
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// find target basic block
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std::string labelname = gIR->func()->getScopedLabelName(target->toChars());
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llvm::BasicBlock*& targetBB = gIR->func()->labelToBB[labelname];
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if (targetBB == NULL)
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targetBB = llvm::BasicBlock::Create("label_" + labelname, gIR->topfunc());
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// emit code for finallys between goto and label
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DtoEnclosingHandlers(loc, lblstmt);
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// goto into finally blocks is forbidden by the spec
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// but should work fine
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if(lblstmt->enclosingFinally != sourceFinally) {
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error(loc, "spec disallows goto into or out of finally block");
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fatal();
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}
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llvm::BranchInst::Create(targetBB, gIR->scopebb());
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}
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/****************************************************************************************/
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/*////////////////////////////////////////////////////////////////////////////////////////
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// TRY-FINALLY, VOLATILE AND SYNCHRONIZED HELPER
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////////////////////////////////////////////////////////////////////////////////////////*/
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void EnclosingSynchro::emitCode(IRState * p)
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{
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if (s->exp)
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DtoLeaveMonitor(s->exp->toElem(p)->getRVal());
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else
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DtoLeaveCritical(s->llsync);
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}
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////////////////////////////////////////////////////////////////////////////////////////
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void EnclosingVolatile::emitCode(IRState * p)
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{
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// store-load barrier
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DtoMemoryBarrier(false, false, true, false);
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}
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////////////////////////////////////////////////////////////////////////////////////////
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void EnclosingTryFinally::emitCode(IRState * p)
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{
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if (tf->finalbody)
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{
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llvm::BasicBlock* oldpad = p->func()->landingPad;
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p->func()->landingPad = landingPad;
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tf->finalbody->toIR(p);
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p->func()->landingPad = oldpad;
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}
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}
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////////////////////////////////////////////////////////////////////////////////////////
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void DtoEnclosingHandlers(Loc loc, Statement* target)
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{
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// labels are a special case: they are not required to enclose the current scope
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// for them we use the enclosing scope handler as a reference point
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LabelStatement* lblstmt = dynamic_cast<LabelStatement*>(target);
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if (lblstmt)
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target = lblstmt->enclosingScopeExit;
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// figure out up until what handler we need to emit
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IrFunction::TargetScopeVec::reverse_iterator targetit = gIR->func()->targetScopes.rbegin();
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IrFunction::TargetScopeVec::reverse_iterator it_end = gIR->func()->targetScopes.rend();
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while(targetit != it_end) {
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if (targetit->s == target) {
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break;
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}
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++targetit;
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}
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if (target && targetit == it_end) {
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if (lblstmt)
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error(loc, "cannot goto into try, volatile or synchronized statement at %s", target->loc.toChars());
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else
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error(loc, "internal error, cannot find jump path to statement at %s", target->loc.toChars());
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return;
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}
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//
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// emit code for enclosing handlers
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//
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// since the labelstatements possibly inside are private
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// and might already exist push a label scope
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gIR->func()->pushUniqueLabelScope("enclosing");
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IrFunction::TargetScopeVec::reverse_iterator it = gIR->func()->targetScopes.rbegin();
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while (it != targetit) {
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if (it->enclosinghandler)
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it->enclosinghandler->emitCode(gIR);
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++it;
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}
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gIR->func()->popLabelScope();
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}
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/****************************************************************************************/
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/*////////////////////////////////////////////////////////////////////////////////////////
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// SYNCHRONIZED SECTION HELPERS
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////////////////////////////////////////////////////////////////////////////////////////*/
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void DtoEnterCritical(LLValue* g)
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{
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LLFunction* fn = LLVM_D_GetRuntimeFunction(gIR->module, "_d_criticalenter");
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gIR->CreateCallOrInvoke(fn, g);
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}
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void DtoLeaveCritical(LLValue* g)
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{
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LLFunction* fn = LLVM_D_GetRuntimeFunction(gIR->module, "_d_criticalexit");
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gIR->CreateCallOrInvoke(fn, g);
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}
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void DtoEnterMonitor(LLValue* v)
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{
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LLFunction* fn = LLVM_D_GetRuntimeFunction(gIR->module, "_d_monitorenter");
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v = DtoBitCast(v, fn->getFunctionType()->getParamType(0));
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gIR->CreateCallOrInvoke(fn, v);
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}
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void DtoLeaveMonitor(LLValue* v)
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{
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LLFunction* fn = LLVM_D_GetRuntimeFunction(gIR->module, "_d_monitorexit");
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v = DtoBitCast(v, fn->getFunctionType()->getParamType(0));
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gIR->CreateCallOrInvoke(fn, v);
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}
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/****************************************************************************************/
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/*////////////////////////////////////////////////////////////////////////////////////////
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// ASSIGNMENT HELPER (store this in that)
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////////////////////////////////////////////////////////////////////////////////////////*/
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// is this a good approach at all ?
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void DtoAssign(Loc& loc, DValue* lhs, DValue* rhs)
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{
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Logger::println("DtoAssign(...);\n");
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LOG_SCOPE;
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Type* t = lhs->getType()->toBasetype();
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Type* t2 = rhs->getType()->toBasetype();
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if (t->ty == Tstruct) {
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if (!t->equals(t2)) {
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// FIXME: use 'rhs' for something !?!
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DtoAggrZeroInit(lhs->getLVal());
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}
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else {
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DtoAggrCopy(lhs->getLVal(), rhs->getRVal());
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}
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}
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else if (t->ty == Tarray) {
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// lhs is slice
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if (DSliceValue* s = lhs->isSlice()) {
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if (DSliceValue* s2 = rhs->isSlice()) {
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DtoArrayCopySlices(s, s2);
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}
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else if (t->nextOf()->toBasetype()->equals(t2)) {
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DtoArrayInit(loc, s, rhs);
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}
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else {
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DtoArrayCopyToSlice(s, rhs);
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}
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}
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// rhs is slice
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else if (DSliceValue* s = rhs->isSlice()) {
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assert(s->getType()->toBasetype() == lhs->getType()->toBasetype());
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DtoSetArray(lhs->getLVal(),DtoArrayLen(s),DtoArrayPtr(s));
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}
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// null
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else if (rhs->isNull()) {
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DtoSetArrayToNull(lhs->getLVal());
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}
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// reference assignment
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else if (t2->ty == Tarray) {
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DtoStore(rhs->getRVal(), lhs->getLVal());
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}
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// some implicitly converting ref assignment
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else {
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DtoSetArray(lhs->getLVal(), DtoArrayLen(rhs), DtoArrayPtr(rhs));
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}
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}
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else if (t->ty == Tsarray) {
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// T[n] = T[n]
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if (DtoType(lhs->getType()) == DtoType(rhs->getType())) {
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DtoStaticArrayCopy(lhs->getLVal(), rhs->getRVal());
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}
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// T[n] = T
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else if (t->nextOf()->toBasetype()->equals(t2)) {
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DtoArrayInit(loc, lhs, rhs);
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}
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// T[n] = T[] - generally only generated by frontend in rare cases
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else if (t2->ty == Tarray && t->nextOf()->toBasetype()->equals(t2->nextOf()->toBasetype())) {
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DtoMemCpy(lhs->getLVal(), DtoArrayPtr(rhs), DtoArrayLen(rhs));
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} else {
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assert(0 && "Unimplemented static array assign!");
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}
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}
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else if (t->ty == Tdelegate) {
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LLValue* l = lhs->getLVal();
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LLValue* r = rhs->getRVal();
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if (Logger::enabled())
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Logger::cout() << "assign\nlhs: " << *l << "rhs: " << *r << '\n';
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DtoStore(r, l);
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}
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else if (t->ty == Tclass) {
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assert(t2->ty == Tclass);
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LLValue* l = lhs->getLVal();
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LLValue* r = rhs->getRVal();
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if (Logger::enabled())
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{
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Logger::cout() << "l : " << *l << '\n';
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Logger::cout() << "r : " << *r << '\n';
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}
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r = DtoBitCast(r, l->getType()->getContainedType(0));
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DtoStore(r, l);
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}
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else if (t->iscomplex()) {
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LLValue* dst = lhs->getLVal();
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LLValue* src = DtoCast(loc, rhs, lhs->getType())->getRVal();
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DtoStore(src, dst);
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}
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else {
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LLValue* l = lhs->getLVal();
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LLValue* r = rhs->getRVal();
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if (Logger::enabled())
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Logger::cout() << "assign\nlhs: " << *l << "rhs: " << *r << '\n';
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const LLType* lit = l->getType()->getContainedType(0);
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if (r->getType() != lit) {
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r = DtoCast(loc, rhs, lhs->getType())->getRVal();
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if (Logger::enabled())
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Logger::cout() << "really assign\nlhs: " << *l << "rhs: " << *r << '\n';
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assert(r->getType() == l->getType()->getContainedType(0));
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}
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gIR->ir->CreateStore(r, l);
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}
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}
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/****************************************************************************************/
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/*////////////////////////////////////////////////////////////////////////////////////////
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// NULL VALUE HELPER
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////////////////////////////////////////////////////////////////////////////////////////*/
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DValue* DtoNullValue(Type* type)
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{
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Type* basetype = type->toBasetype();
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TY basety = basetype->ty;
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const LLType* lltype = DtoType(basetype);
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// complex, needs to be first since complex are also floating
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if (basetype->iscomplex())
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{
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const LLType* basefp = DtoComplexBaseType(basetype);
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LLValue* res = DtoAggrPair(DtoType(type), LLConstant::getNullValue(basefp), LLConstant::getNullValue(basefp));
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return new DImValue(type, res);
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}
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// integer, floating, pointer and class have no special representation
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else if (basetype->isintegral() || basetype->isfloating() || basety == Tpointer || basety == Tclass)
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{
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return new DConstValue(type, LLConstant::getNullValue(lltype));
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}
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// dynamic array
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else if (basety == Tarray)
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{
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LLValue* len = DtoConstSize_t(0);
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LLValue* ptr = getNullPtr(getPtrToType(DtoType(basetype->nextOf())));
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return new DSliceValue(type, len, ptr);
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}
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// delegate
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else if (basety == Tdelegate)
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{
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return new DNullValue(type, LLConstant::getNullValue(lltype));
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}
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// unknown
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llvm::cout << "unsupported: null value for " << type->toChars() << '\n';
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assert(0);
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return 0;
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}
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/****************************************************************************************/
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/*////////////////////////////////////////////////////////////////////////////////////////
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// CASTING HELPERS
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////////////////////////////////////////////////////////////////////////////////////////*/
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DValue* DtoCastInt(Loc& loc, DValue* val, Type* _to)
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{
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const LLType* tolltype = DtoType(_to);
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Type* to = _to->toBasetype();
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Type* from = val->getType()->toBasetype();
|
|
assert(from->isintegral());
|
|
|
|
size_t fromsz = from->size();
|
|
size_t tosz = to->size();
|
|
|
|
LLValue* rval = val->getRVal();
|
|
if (rval->getType() == tolltype) {
|
|
return new DImValue(_to, rval);
|
|
}
|
|
|
|
if (to->ty == Tbool) {
|
|
LLValue* zero = LLConstantInt::get(rval->getType(), 0, false);
|
|
rval = gIR->ir->CreateICmpNE(rval, zero, "tmp");
|
|
}
|
|
else if (to->isintegral()) {
|
|
if (fromsz < tosz || from->ty == Tbool) {
|
|
if (Logger::enabled())
|
|
Logger::cout() << "cast to: " << *tolltype << '\n';
|
|
if (from->isunsigned() || from->ty == Tbool) {
|
|
rval = new llvm::ZExtInst(rval, tolltype, "tmp", gIR->scopebb());
|
|
} else {
|
|
rval = new llvm::SExtInst(rval, tolltype, "tmp", gIR->scopebb());
|
|
}
|
|
}
|
|
else if (fromsz > tosz) {
|
|
rval = new llvm::TruncInst(rval, tolltype, "tmp", gIR->scopebb());
|
|
}
|
|
else {
|
|
rval = DtoBitCast(rval, tolltype);
|
|
}
|
|
}
|
|
else if (to->iscomplex()) {
|
|
return DtoComplex(loc, to, val);
|
|
}
|
|
else if (to->isfloating()) {
|
|
if (from->isunsigned()) {
|
|
rval = new llvm::UIToFPInst(rval, tolltype, "tmp", gIR->scopebb());
|
|
}
|
|
else {
|
|
rval = new llvm::SIToFPInst(rval, tolltype, "tmp", gIR->scopebb());
|
|
}
|
|
}
|
|
else if (to->ty == Tpointer) {
|
|
if (Logger::enabled())
|
|
Logger::cout() << "cast pointer: " << *tolltype << '\n';
|
|
rval = gIR->ir->CreateIntToPtr(rval, tolltype, "tmp");
|
|
}
|
|
else {
|
|
error(loc, "invalid cast from '%s' to '%s'", val->getType()->toChars(), _to->toChars());
|
|
fatal();
|
|
}
|
|
|
|
return new DImValue(_to, rval);
|
|
}
|
|
|
|
DValue* DtoCastPtr(Loc& loc, DValue* val, Type* to)
|
|
{
|
|
const LLType* tolltype = DtoType(to);
|
|
|
|
Type* totype = to->toBasetype();
|
|
Type* fromtype = val->getType()->toBasetype();
|
|
assert(fromtype->ty == Tpointer || fromtype->ty == Tfunction);
|
|
|
|
LLValue* rval;
|
|
|
|
if (totype->ty == Tpointer || totype->ty == Tclass) {
|
|
LLValue* src = val->getRVal();
|
|
if (Logger::enabled())
|
|
Logger::cout() << "src: " << *src << "to type: " << *tolltype << '\n';
|
|
rval = DtoBitCast(src, tolltype);
|
|
}
|
|
else if (totype->ty == Tbool) {
|
|
LLValue* src = val->getRVal();
|
|
LLValue* zero = LLConstant::getNullValue(src->getType());
|
|
rval = gIR->ir->CreateICmpNE(src, zero, "tmp");
|
|
}
|
|
else if (totype->isintegral()) {
|
|
rval = new llvm::PtrToIntInst(val->getRVal(), tolltype, "tmp", gIR->scopebb());
|
|
}
|
|
else {
|
|
error(loc, "invalid cast from '%s' to '%s'", val->getType()->toChars(), to->toChars());
|
|
fatal();
|
|
}
|
|
|
|
return new DImValue(to, rval);
|
|
}
|
|
|
|
DValue* DtoCastFloat(Loc& loc, DValue* val, Type* to)
|
|
{
|
|
if (val->getType() == to)
|
|
return val;
|
|
|
|
const LLType* tolltype = DtoType(to);
|
|
|
|
Type* totype = to->toBasetype();
|
|
Type* fromtype = val->getType()->toBasetype();
|
|
assert(fromtype->isfloating());
|
|
|
|
size_t fromsz = fromtype->size();
|
|
size_t tosz = totype->size();
|
|
|
|
LLValue* rval;
|
|
|
|
if (totype->ty == Tbool) {
|
|
rval = val->getRVal();
|
|
LLValue* zero = LLConstant::getNullValue(rval->getType());
|
|
rval = gIR->ir->CreateFCmpUNE(rval, zero, "tmp");
|
|
}
|
|
else if (totype->iscomplex()) {
|
|
return DtoComplex(loc, to, val);
|
|
}
|
|
else if (totype->isfloating()) {
|
|
if (fromsz == tosz) {
|
|
rval = val->getRVal();
|
|
assert(rval->getType() == tolltype);
|
|
}
|
|
else if (fromsz < tosz) {
|
|
rval = new llvm::FPExtInst(val->getRVal(), tolltype, "tmp", gIR->scopebb());
|
|
}
|
|
else if (fromsz > tosz) {
|
|
rval = new llvm::FPTruncInst(val->getRVal(), tolltype, "tmp", gIR->scopebb());
|
|
}
|
|
else {
|
|
error(loc, "invalid cast from '%s' to '%s'", val->getType()->toChars(), to->toChars());
|
|
fatal();
|
|
}
|
|
}
|
|
else if (totype->isintegral()) {
|
|
if (totype->isunsigned()) {
|
|
rval = new llvm::FPToUIInst(val->getRVal(), tolltype, "tmp", gIR->scopebb());
|
|
}
|
|
else {
|
|
rval = new llvm::FPToSIInst(val->getRVal(), tolltype, "tmp", gIR->scopebb());
|
|
}
|
|
}
|
|
else {
|
|
error(loc, "invalid cast from '%s' to '%s'", val->getType()->toChars(), to->toChars());
|
|
fatal();
|
|
}
|
|
|
|
return new DImValue(to, rval);
|
|
}
|
|
|
|
DValue* DtoCastDelegate(Loc& loc, DValue* val, Type* to)
|
|
{
|
|
if (to->toBasetype()->ty == Tdelegate)
|
|
{
|
|
return DtoPaintType(loc, val, to);
|
|
}
|
|
else if (to->toBasetype()->ty == Tbool)
|
|
{
|
|
return new DImValue(to, DtoDelegateEquals(TOKnotequal, val->getRVal(), NULL));
|
|
}
|
|
else
|
|
{
|
|
error(loc, "invalid cast from '%s' to '%s'", val->getType()->toChars(), to->toChars());
|
|
fatal();
|
|
}
|
|
}
|
|
|
|
DValue* DtoCast(Loc& loc, DValue* val, Type* to)
|
|
{
|
|
Type* fromtype = val->getType()->toBasetype();
|
|
Type* totype = to->toBasetype();
|
|
if (fromtype->equals(totype))
|
|
return val;
|
|
|
|
Logger::println("Casting from '%s' to '%s'", fromtype->toChars(), to->toChars());
|
|
LOG_SCOPE;
|
|
|
|
if (fromtype->isintegral()) {
|
|
return DtoCastInt(loc, val, to);
|
|
}
|
|
else if (fromtype->iscomplex()) {
|
|
return DtoCastComplex(loc, val, to);
|
|
}
|
|
else if (fromtype->isfloating()) {
|
|
return DtoCastFloat(loc, val, to);
|
|
}
|
|
else if (fromtype->ty == Tclass) {
|
|
return DtoCastClass(val, to);
|
|
}
|
|
else if (fromtype->ty == Tarray || fromtype->ty == Tsarray) {
|
|
return DtoCastArray(loc, val, to);
|
|
}
|
|
else if (fromtype->ty == Tpointer || fromtype->ty == Tfunction) {
|
|
return DtoCastPtr(loc, val, to);
|
|
}
|
|
else if (fromtype->ty == Tdelegate) {
|
|
return DtoCastDelegate(loc, val, to);
|
|
}
|
|
else {
|
|
error(loc, "invalid cast from '%s' to '%s'", val->getType()->toChars(), to->toChars());
|
|
fatal();
|
|
}
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////////////////////////
|
|
|
|
DValue* DtoPaintType(Loc& loc, DValue* val, Type* to)
|
|
{
|
|
Type* from = val->getType()->toBasetype();
|
|
Logger::println("repainting from '%s' to '%s'", from->toChars(), to->toChars());
|
|
|
|
if (from->ty == Tarray)
|
|
{
|
|
Type* at = to->toBasetype();
|
|
assert(at->ty == Tarray);
|
|
Type* elem = at->nextOf()->pointerTo();
|
|
if (DSliceValue* slice = val->isSlice())
|
|
{
|
|
return new DSliceValue(to, slice->len, DtoBitCast(slice->ptr, DtoType(elem)));
|
|
}
|
|
else if (val->isLVal())
|
|
{
|
|
LLValue* ptr = val->getLVal();
|
|
ptr = DtoBitCast(ptr, DtoType(at->pointerTo()));
|
|
return new DVarValue(to, ptr);
|
|
}
|
|
else
|
|
{
|
|
LLValue *len, *ptr;
|
|
len = DtoArrayLen(val);
|
|
ptr = DtoArrayPtr(val);
|
|
ptr = DtoBitCast(ptr, DtoType(elem));
|
|
return new DImValue(to, DtoAggrPair(len, ptr, "tmp"));
|
|
}
|
|
}
|
|
else if (from->ty == Tdelegate)
|
|
{
|
|
Type* dgty = to->toBasetype();
|
|
assert(dgty->ty == Tdelegate);
|
|
if (val->isLVal())
|
|
{
|
|
LLValue* ptr = val->getLVal();
|
|
assert(isaPointer(ptr));
|
|
ptr = DtoBitCast(ptr, getPtrToType(DtoType(dgty)));
|
|
if (Logger::enabled())
|
|
Logger::cout() << "dg ptr: " << *ptr << '\n';
|
|
return new DVarValue(to, ptr);
|
|
}
|
|
else
|
|
{
|
|
LLValue* dg = val->getRVal();
|
|
LLValue* context = gIR->ir->CreateExtractValue(dg, 0, ".context");
|
|
LLValue* funcptr = gIR->ir->CreateExtractValue(dg, 1, ".funcptr");
|
|
funcptr = DtoBitCast(funcptr, DtoType(dgty)->getContainedType(1));
|
|
LLValue* aggr = DtoAggrPair(context, funcptr, "tmp");
|
|
if (Logger::enabled())
|
|
Logger::cout() << "dg: " << *aggr << '\n';
|
|
return new DImValue(to, aggr);
|
|
}
|
|
}
|
|
else if (from->ty == Tpointer || from->ty == Tclass || from->ty == Taarray)
|
|
{
|
|
Type* b = to->toBasetype();
|
|
assert(b->ty == Tpointer || b->ty == Tclass || b->ty == Taarray);
|
|
LLValue* ptr = DtoBitCast(val->getRVal(), DtoType(b));
|
|
return new DImValue(to, ptr);
|
|
}
|
|
else
|
|
{
|
|
assert(!val->isLVal());
|
|
assert(DtoType(to) == DtoType(to));
|
|
return new DImValue(to, val->getRVal());
|
|
}
|
|
}
|
|
|
|
/****************************************************************************************/
|
|
/*////////////////////////////////////////////////////////////////////////////////////////
|
|
// TEMPLATE HELPERS
|
|
////////////////////////////////////////////////////////////////////////////////////////*/
|
|
|
|
TemplateInstance* DtoIsTemplateInstance(Dsymbol* s)
|
|
{
|
|
if (!s) return NULL;
|
|
if (s->isTemplateInstance() && !s->isTemplateMixin())
|
|
return s->isTemplateInstance();
|
|
else if (s->parent)
|
|
return DtoIsTemplateInstance(s->parent);
|
|
return NULL;
|
|
}
|
|
|
|
/****************************************************************************************/
|
|
/*////////////////////////////////////////////////////////////////////////////////////////
|
|
// PROCESSING QUEUE HELPERS
|
|
////////////////////////////////////////////////////////////////////////////////////////*/
|
|
|
|
void DtoResolveDsymbol(Dsymbol* dsym)
|
|
{
|
|
if (StructDeclaration* sd = dsym->isStructDeclaration()) {
|
|
DtoResolveStruct(sd);
|
|
}
|
|
else if (ClassDeclaration* cd = dsym->isClassDeclaration()) {
|
|
DtoResolveClass(cd);
|
|
}
|
|
else if (FuncDeclaration* fd = dsym->isFuncDeclaration()) {
|
|
DtoResolveFunction(fd);
|
|
}
|
|
else if (TypeInfoDeclaration* fd = dsym->isTypeInfoDeclaration()) {
|
|
DtoResolveTypeInfo(fd);
|
|
}
|
|
else {
|
|
error(dsym->loc, "unsupported dsymbol: %s", dsym->toChars());
|
|
assert(0 && "unsupported dsymbol for DtoResolveDsymbol");
|
|
}
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////////////////////////
|
|
|
|
void DtoConstInitGlobal(VarDeclaration* vd)
|
|
{
|
|
vd->codegen(Type::sir);
|
|
|
|
if (vd->ir.initialized) return;
|
|
vd->ir.initialized = gIR->dmodule;
|
|
|
|
Logger::println("DtoConstInitGlobal(%s) @ %s", vd->toChars(), vd->loc.toChars());
|
|
LOG_SCOPE;
|
|
|
|
Dsymbol* par = vd->toParent();
|
|
|
|
// build the initializer
|
|
LLConstant* initVal = DtoConstInitializer(vd->loc, vd->type, vd->init);
|
|
|
|
// set the initializer if appropriate
|
|
IrGlobal* glob = vd->ir.irGlobal;
|
|
llvm::GlobalVariable* gvar = llvm::cast<llvm::GlobalVariable>(glob->value);
|
|
|
|
// refine the global's opaque type to the type of the initializer
|
|
llvm::cast<LLOpaqueType>(glob->type.get())->refineAbstractTypeTo(initVal->getType());
|
|
|
|
assert(!glob->constInit);
|
|
glob->constInit = initVal;
|
|
|
|
// assign the initializer
|
|
llvm::GlobalVariable* globalvar = llvm::cast<llvm::GlobalVariable>(glob->value);
|
|
|
|
if (!(vd->storage_class & STCextern) && mustDefineSymbol(vd))
|
|
{
|
|
if (Logger::enabled())
|
|
{
|
|
Logger::println("setting initializer");
|
|
Logger::cout() << "global: " << *gvar << '\n';
|
|
#if 0
|
|
Logger::cout() << "init: " << *initVal << '\n';
|
|
#endif
|
|
}
|
|
|
|
gvar->setInitializer(initVal);
|
|
|
|
// do debug info
|
|
if (global.params.symdebug)
|
|
{
|
|
LLGlobalVariable* gv = DtoDwarfGlobalVariable(gvar, vd).getGV();
|
|
// keep a reference so GDCE doesn't delete it !
|
|
gIR->usedArray.push_back(llvm::ConstantExpr::getBitCast(gv, getVoidPtrType()));
|
|
}
|
|
}
|
|
}
|
|
|
|
/****************************************************************************************/
|
|
/*////////////////////////////////////////////////////////////////////////////////////////
|
|
// DECLARATION EXP HELPER
|
|
////////////////////////////////////////////////////////////////////////////////////////*/
|
|
DValue* DtoDeclarationExp(Dsymbol* declaration)
|
|
{
|
|
Logger::print("DtoDeclarationExp: %s\n", declaration->toChars());
|
|
LOG_SCOPE;
|
|
|
|
// variable declaration
|
|
if (VarDeclaration* vd = declaration->isVarDeclaration())
|
|
{
|
|
Logger::println("VarDeclaration");
|
|
|
|
// if aliassym is set, this VarDecl is redone as an alias to another symbol
|
|
// this seems to be done to rewrite Tuple!(...) v;
|
|
// as a TupleDecl that contains a bunch of individual VarDecls
|
|
if (vd->aliassym)
|
|
return DtoDeclarationExp(vd->aliassym);
|
|
|
|
// static
|
|
if (vd->isDataseg())
|
|
{
|
|
vd->codegen(Type::sir);
|
|
}
|
|
else
|
|
{
|
|
if (global.params.llvmAnnotate)
|
|
DtoAnnotation(declaration->toChars());
|
|
|
|
Logger::println("vdtype = %s", vd->type->toChars());
|
|
|
|
// referenced by nested delegate?
|
|
#if DMDV2
|
|
if (vd->nestedrefs.dim) {
|
|
#else
|
|
if (vd->nestedref) {
|
|
#endif
|
|
Logger::println("has nestedref set");
|
|
assert(vd->ir.irLocal);
|
|
|
|
DtoNestedInit(vd);
|
|
}
|
|
// normal stack variable, allocate storage on the stack if it has not already been done
|
|
else if(!vd->ir.irLocal) {
|
|
const LLType* lltype = DtoType(vd->type);
|
|
|
|
llvm::Value* allocainst;
|
|
if(gTargetData->getTypeSizeInBits(lltype) == 0)
|
|
allocainst = llvm::ConstantPointerNull::get(getPtrToType(lltype));
|
|
else
|
|
allocainst = DtoAlloca(vd->type, vd->toChars());
|
|
|
|
//allocainst->setAlignment(vd->type->alignsize()); // TODO
|
|
vd->ir.irLocal = new IrLocal(vd);
|
|
vd->ir.irLocal->value = allocainst;
|
|
|
|
if (global.params.symdebug)
|
|
{
|
|
DtoDwarfLocalVariable(allocainst, vd);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
assert(vd->ir.irLocal->value);
|
|
}
|
|
|
|
if (Logger::enabled())
|
|
Logger::cout() << "llvm value for decl: " << *vd->ir.irLocal->value << '\n';
|
|
DValue* ie = DtoInitializer(vd->ir.irLocal->value, vd->init);
|
|
}
|
|
|
|
return new DVarValue(vd->type, vd, vd->ir.getIrValue());
|
|
}
|
|
// struct declaration
|
|
else if (StructDeclaration* s = declaration->isStructDeclaration())
|
|
{
|
|
Logger::println("StructDeclaration");
|
|
s->codegen(Type::sir);
|
|
}
|
|
// function declaration
|
|
else if (FuncDeclaration* f = declaration->isFuncDeclaration())
|
|
{
|
|
Logger::println("FuncDeclaration");
|
|
f->codegen(Type::sir);
|
|
}
|
|
// alias declaration
|
|
else if (AliasDeclaration* a = declaration->isAliasDeclaration())
|
|
{
|
|
Logger::println("AliasDeclaration - no work");
|
|
// do nothing
|
|
}
|
|
// enum
|
|
else if (EnumDeclaration* e = declaration->isEnumDeclaration())
|
|
{
|
|
Logger::println("EnumDeclaration - no work");
|
|
// do nothing
|
|
}
|
|
// class
|
|
else if (ClassDeclaration* e = declaration->isClassDeclaration())
|
|
{
|
|
Logger::println("ClassDeclaration");
|
|
e->codegen(Type::sir);
|
|
}
|
|
// typedef
|
|
else if (TypedefDeclaration* tdef = declaration->isTypedefDeclaration())
|
|
{
|
|
Logger::println("TypedefDeclaration");
|
|
DtoTypeInfoOf(tdef->type, false);
|
|
}
|
|
// attribute declaration
|
|
else if (AttribDeclaration* a = declaration->isAttribDeclaration())
|
|
{
|
|
Logger::println("AttribDeclaration");
|
|
for (int i=0; i < a->decl->dim; ++i)
|
|
{
|
|
DtoDeclarationExp((Dsymbol*)a->decl->data[i]);
|
|
}
|
|
}
|
|
// mixin declaration
|
|
else if (TemplateMixin* m = declaration->isTemplateMixin())
|
|
{
|
|
Logger::println("TemplateMixin");
|
|
for (int i=0; i < m->members->dim; ++i)
|
|
{
|
|
Dsymbol* mdsym = (Dsymbol*)m->members->data[i];
|
|
DtoDeclarationExp(mdsym);
|
|
}
|
|
}
|
|
// tuple declaration
|
|
else if (TupleDeclaration* tupled = declaration->isTupleDeclaration())
|
|
{
|
|
Logger::println("TupleDeclaration");
|
|
if(!tupled->isexp) {
|
|
error(declaration->loc, "don't know how to handle non-expression tuple decls yet");
|
|
assert(0);
|
|
}
|
|
|
|
assert(tupled->objects);
|
|
for (int i=0; i < tupled->objects->dim; ++i)
|
|
{
|
|
DsymbolExp* exp = (DsymbolExp*)tupled->objects->data[i];
|
|
DtoDeclarationExp(exp->s);
|
|
}
|
|
}
|
|
// unsupported declaration
|
|
else
|
|
{
|
|
error(declaration->loc, "Unimplemented Declaration type for DeclarationExp. kind: %s", declaration->kind());
|
|
assert(0);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
// does pretty much the same as DtoDeclarationExp, except it doesn't initialize, and only handles var declarations
|
|
LLValue* DtoRawVarDeclaration(VarDeclaration* var, LLValue* addr)
|
|
{
|
|
// we don't handle globals with this one
|
|
assert(!var->isDataseg());
|
|
|
|
// we don't handle aliases either
|
|
assert(!var->aliassym);
|
|
|
|
// alloca if necessary
|
|
LLValue* allocaval = NULL;
|
|
if (!addr && (!var->ir.irLocal || !var->ir.irLocal->value))
|
|
{
|
|
addr = DtoAlloca(var->type, var->toChars());
|
|
|
|
// add debug info
|
|
if (global.params.symdebug)
|
|
DtoDwarfLocalVariable(addr, var);
|
|
}
|
|
|
|
// referenced by nested function?
|
|
#if DMDV2
|
|
if (var->nestedrefs.dim)
|
|
#else
|
|
if (var->nestedref)
|
|
#endif
|
|
{
|
|
assert(var->ir.irLocal);
|
|
if(!var->ir.irLocal->value)
|
|
{
|
|
assert(addr);
|
|
var->ir.irLocal->value = addr;
|
|
}
|
|
else
|
|
assert(!addr || addr == var->ir.irLocal->value);
|
|
|
|
DtoNestedInit(var);
|
|
}
|
|
// normal local variable
|
|
else
|
|
{
|
|
// if this already has storage, it must've been handled already
|
|
if (var->ir.irLocal && var->ir.irLocal->value) {
|
|
if (addr && addr != var->ir.irLocal->value) {
|
|
// This can happen, for example, in scope(exit) blocks which
|
|
// are translated to IR multiple times.
|
|
// That *should* only happen after the first one is completely done
|
|
// though, so just set the address.
|
|
IF_LOG {
|
|
Logger::println("Replacing LLVM address of %s", var->toChars());
|
|
LOG_SCOPE;
|
|
Logger::cout() << "Old val: " << *var->ir.irLocal->value << '\n';
|
|
Logger::cout() << "New val: " << *addr << '\n';
|
|
}
|
|
var->ir.irLocal->value = addr;
|
|
}
|
|
return addr;
|
|
}
|
|
|
|
assert(!var->ir.isSet());
|
|
assert(addr);
|
|
var->ir.irLocal = new IrLocal(var);
|
|
var->ir.irLocal->value = addr;
|
|
}
|
|
|
|
// return the alloca
|
|
return var->ir.irLocal->value;
|
|
}
|
|
|
|
/****************************************************************************************/
|
|
/*////////////////////////////////////////////////////////////////////////////////////////
|
|
// INITIALIZER HELPERS
|
|
////////////////////////////////////////////////////////////////////////////////////////*/
|
|
|
|
LLConstant* DtoConstInitializer(Loc loc, Type* type, Initializer* init)
|
|
{
|
|
LLConstant* _init = 0; // may return zero
|
|
if (!init)
|
|
{
|
|
Logger::println("const default initializer for %s", type->toChars());
|
|
_init = DtoConstExpInit(loc, type, type->defaultInit());
|
|
}
|
|
else if (ExpInitializer* ex = init->isExpInitializer())
|
|
{
|
|
Logger::println("const expression initializer");
|
|
_init = DtoConstExpInit(loc, type, ex->exp);;
|
|
}
|
|
else if (StructInitializer* si = init->isStructInitializer())
|
|
{
|
|
Logger::println("const struct initializer");
|
|
si->ad->codegen(Type::sir);
|
|
return si->ad->ir.irStruct->createStructInitializer(si);
|
|
}
|
|
else if (ArrayInitializer* ai = init->isArrayInitializer())
|
|
{
|
|
Logger::println("const array initializer");
|
|
_init = DtoConstArrayInitializer(ai);
|
|
}
|
|
else if (init->isVoidInitializer())
|
|
{
|
|
Logger::println("const void initializer");
|
|
const LLType* ty = DtoType(type);
|
|
_init = llvm::Constant::getNullValue(ty);
|
|
}
|
|
else {
|
|
Logger::println("unsupported const initializer: %s", init->toChars());
|
|
}
|
|
return _init;
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////////////////////////
|
|
|
|
DValue* DtoInitializer(LLValue* target, Initializer* init)
|
|
{
|
|
if (!init)
|
|
return 0;
|
|
else if (ExpInitializer* ex = init->isExpInitializer())
|
|
{
|
|
Logger::println("expression initializer");
|
|
assert(ex->exp);
|
|
return ex->exp->toElem(gIR);
|
|
}
|
|
else if (init->isVoidInitializer())
|
|
{
|
|
// do nothing
|
|
}
|
|
else {
|
|
Logger::println("unsupported initializer: %s", init->toChars());
|
|
assert(0);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////////////////////////
|
|
|
|
static LLConstant* expand_to_sarray(Type *base, Expression* exp)
|
|
{
|
|
Logger::println("building type %s from expression (%s) of type %s", base->toChars(), exp->toChars(), exp->type->toChars());
|
|
const LLType* dstTy = DtoType(base);
|
|
if (Logger::enabled())
|
|
Logger::cout() << "final llvm type requested: " << *dstTy << '\n';
|
|
|
|
LLConstant* val = exp->toConstElem(gIR);
|
|
|
|
Type* expbase = exp->type->toBasetype();
|
|
Logger::println("expbase: %s", expbase->toChars());
|
|
Type* t = base->toBasetype();
|
|
|
|
LLSmallVector<size_t, 4> dims;
|
|
|
|
while(1)
|
|
{
|
|
Logger::println("t: %s", t->toChars());
|
|
if (t->equals(expbase))
|
|
break;
|
|
assert(t->ty == Tsarray);
|
|
TypeSArray* tsa = (TypeSArray*)t;
|
|
dims.push_back(tsa->dim->toInteger());
|
|
assert(t->nextOf());
|
|
t = t->nextOf()->toBasetype();
|
|
}
|
|
|
|
size_t i = dims.size();
|
|
assert(i);
|
|
|
|
std::vector<LLConstant*> inits;
|
|
while (i--)
|
|
{
|
|
const LLArrayType* arrty = LLArrayType::get(val->getType(), dims[i]);
|
|
inits.clear();
|
|
inits.insert(inits.end(), dims[i], val);
|
|
val = LLConstantArray::get(arrty, inits);
|
|
}
|
|
|
|
return val;
|
|
}
|
|
|
|
LLConstant* DtoConstExpInit(Loc loc, Type* type, Expression* exp)
|
|
{
|
|
Type* expbase = exp->type->toBasetype();
|
|
Type* base = type->toBasetype();
|
|
|
|
// if not the same basetypes, we won't get the same llvm types either
|
|
if (!expbase->equals(base))
|
|
{
|
|
if (base->ty == Tsarray)
|
|
{
|
|
if (base->nextOf()->toBasetype()->ty == Tvoid) {
|
|
error(loc, "static arrays of voids have no default initializer");
|
|
fatal();
|
|
}
|
|
Logger::println("type is a static array, building constant array initializer to single value");
|
|
return expand_to_sarray(base, exp);
|
|
}
|
|
else
|
|
{
|
|
error("cannot yet convert default initializer %s to type %s to %s", exp->toChars(), exp->type->toChars(), type->toChars());
|
|
fatal();
|
|
}
|
|
assert(0);
|
|
}
|
|
|
|
return exp->toConstElem(gIR);
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////////////////////////
|
|
|
|
void DtoAnnotation(const char* str)
|
|
{
|
|
std::string s("CODE: ");
|
|
s.append(str);
|
|
char* p = &s[0];
|
|
while (*p)
|
|
{
|
|
if (*p == '"')
|
|
*p = '\'';
|
|
++p;
|
|
}
|
|
// create a noop with the code as the result name!
|
|
// FIXME: this is const folded and eliminated immediately ... :/
|
|
gIR->ir->CreateAnd(DtoConstSize_t(0),DtoConstSize_t(0),s.c_str());
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////////////////////////
|
|
|
|
LLConstant* DtoTypeInfoOf(Type* type, bool base)
|
|
{
|
|
#if DMDV2
|
|
// FIXME: this is probably wrong, but it makes druntime's genobj.d compile!
|
|
type = type->mutableOf()->merge(); // needed.. getTypeInfo does the same
|
|
#else
|
|
type = type->merge(); // needed.. getTypeInfo does the same
|
|
#endif
|
|
type->getTypeInfo(NULL);
|
|
TypeInfoDeclaration* tidecl = type->vtinfo;
|
|
assert(tidecl);
|
|
tidecl->codegen(Type::sir);
|
|
assert(tidecl->ir.irGlobal != NULL);
|
|
assert(tidecl->ir.irGlobal->value != NULL);
|
|
LLConstant* c = isaConstant(tidecl->ir.irGlobal->value);
|
|
assert(c != NULL);
|
|
if (base)
|
|
return llvm::ConstantExpr::getBitCast(c, DtoType(Type::typeinfo->type));
|
|
return c;
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////////////////////////
|
|
|
|
void DtoOverloadedIntrinsicName(TemplateInstance* ti, TemplateDeclaration* td, std::string& name)
|
|
{
|
|
Logger::println("DtoOverloadedIntrinsicName");
|
|
LOG_SCOPE;
|
|
|
|
Logger::println("template instance: %s", ti->toChars());
|
|
Logger::println("template declaration: %s", td->toChars());
|
|
Logger::println("intrinsic name: %s", td->intrinsicName.c_str());
|
|
|
|
// for now use the size in bits of the first template param in the instance
|
|
assert(ti->tdtypes.dim == 1);
|
|
Type* T = (Type*)ti->tdtypes.data[0];
|
|
|
|
char prefix = T->isreal() ? 'f' : T->isintegral() ? 'i' : 0;
|
|
if (!prefix) {
|
|
ti->error("has invalid template parameter for intrinsic: %s", T->toChars());
|
|
fatal(); // or LLVM asserts
|
|
}
|
|
|
|
char tmp[21]; // probably excessive, but covers a uint64_t
|
|
sprintf(tmp, "%lu", (unsigned long) gTargetData->getTypeSizeInBits(DtoType(T)));
|
|
|
|
// replace # in name with bitsize
|
|
name = td->intrinsicName;
|
|
|
|
std::string needle("#");
|
|
size_t pos;
|
|
while(std::string::npos != (pos = name.find(needle))) {
|
|
if (pos > 0 && name[pos-1] == prefix) {
|
|
// Properly prefixed, insert bitwidth.
|
|
name.replace(pos, 1, tmp);
|
|
} else {
|
|
if (pos && (name[pos-1] == 'i' || name[pos-1] == 'f')) {
|
|
// Wrong type character.
|
|
ti->error("has invalid parameter type for intrinsic %s: %s is not a%s type",
|
|
name.c_str(), T->toChars(),
|
|
(name[pos-1] == 'i' ? "n integral" : " floating-point"));
|
|
} else {
|
|
// Just plain wrong. (Error in declaration, not instantiation)
|
|
td->error("has an invalid intrinsic name: %s", name.c_str());
|
|
}
|
|
fatal(); // or LLVM asserts
|
|
}
|
|
}
|
|
|
|
Logger::println("final intrinsic name: %s", name.c_str());
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////////////////////////
|
|
|
|
bool mustDefineSymbol(Dsymbol* s)
|
|
{
|
|
if (FuncDeclaration* fd = s->isFuncDeclaration())
|
|
{
|
|
// we can't (and probably shouldn't?) define functions
|
|
// that weren't semantic3'ed
|
|
if (fd->semanticRun < 4)
|
|
return false;
|
|
|
|
if (fd->isArrayOp)
|
|
return true;
|
|
}
|
|
|
|
TemplateInstance* tinst = DtoIsTemplateInstance(s);
|
|
if (tinst)
|
|
{
|
|
if (!opts::singleObj)
|
|
return true;
|
|
|
|
if (!tinst->emittedInModule)
|
|
{
|
|
gIR->seenTemplateInstances.insert(tinst);
|
|
tinst->emittedInModule = gIR->dmodule;
|
|
}
|
|
return tinst->emittedInModule == gIR->dmodule;
|
|
}
|
|
|
|
return s->getModule() == gIR->dmodule;
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////////////////////////
|
|
|
|
bool needsTemplateLinkage(Dsymbol* s)
|
|
{
|
|
return DtoIsTemplateInstance(s) && mustDefineSymbol(s);
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////////////////////////
|
|
|
|
bool hasUnalignedFields(Type* t)
|
|
{
|
|
t = t->toBasetype();
|
|
if (t->ty == Tsarray) {
|
|
assert(t->nextOf()->size() % t->nextOf()->alignsize() == 0);
|
|
return hasUnalignedFields(t->nextOf());
|
|
} else if (t->ty != Tstruct)
|
|
return false;
|
|
|
|
TypeStruct* ts = (TypeStruct*)t;
|
|
if (ts->unaligned)
|
|
return (ts->unaligned == 2);
|
|
|
|
StructDeclaration* sym = ts->sym;
|
|
|
|
// go through all the fields and try to find something unaligned
|
|
ts->unaligned = 2;
|
|
for (int i = 0; i < sym->fields.dim; i++)
|
|
{
|
|
VarDeclaration* f = (VarDeclaration*)sym->fields.data[i];
|
|
unsigned a = f->type->alignsize() - 1;
|
|
if (((f->offset + a) & ~a) != f->offset)
|
|
return true;
|
|
else if (f->type->toBasetype()->ty == Tstruct && hasUnalignedFields(f->type))
|
|
return true;
|
|
}
|
|
|
|
ts->unaligned = 1;
|
|
return false;
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////////////////////////
|
|
|
|
IrModule * getIrModule(Module * M)
|
|
{
|
|
if (M == NULL)
|
|
M = gIR->func()->decl->getModule();
|
|
assert(M && "null module");
|
|
if (!M->ir.irModule)
|
|
M->ir.irModule = new IrModule(M, M->srcfile->toChars());
|
|
return M->ir.irModule;
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////////////////////////
|
|
|
|
size_t realignOffset(size_t offset, Type* type)
|
|
{
|
|
size_t alignsize = type->alignsize();
|
|
size_t alignedoffset = (offset + alignsize - 1) & ~(alignsize - 1);
|
|
|
|
// if the aligned offset already matches the input offset
|
|
// don't waste time checking things are ok!
|
|
if (alignedoffset == offset)
|
|
return alignedoffset;
|
|
|
|
// we cannot get the llvm alignment if the type is still opaque, this can happen in some
|
|
// forward reference situations, so when this happens we fall back to manual padding.
|
|
const llvm::Type* T = DtoType(type);
|
|
if (llvm::isa<llvm::OpaqueType>(T))
|
|
{
|
|
return offset;
|
|
}
|
|
|
|
// then we check against the llvm alignment
|
|
size_t alignsize2 = gTargetData->getABITypeAlignment(T);
|
|
|
|
// if it differs we need to insert manual padding as well
|
|
if (alignsize != alignsize2)
|
|
{
|
|
assert(alignsize > alignsize2 && "this is not good, the D and LLVM "
|
|
"type alignments differ, but LLVM's is bigger! This will break "
|
|
"aggregate type mapping");
|
|
// don't try and align the offset, and let the mappers pad 100% manually
|
|
return offset;
|
|
}
|
|
|
|
// ok, we're good, llvm will align properly!
|
|
return alignedoffset;
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////////////////////////
|