mirror of
https://github.com/ldc-developers/ldc.git
synced 2025-05-04 09:00:33 +03:00
a2748cd2fd
First merge of current development stream. Asm blocks are known to be broken. DMD: 0c9f437bc24015707130ba42dc434d9cd58282fb druntime: 86d49cfb3670904603df0cfdfe44c6fff565c0fc Phobos: a8ca4f7964becac680af0eadbde05aa7d10fc338
164 lines
3.8 KiB
C++
164 lines
3.8 KiB
C++
//===-- target.cpp -------------------------------------------------------===//
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//
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// LDC – the LLVM D compiler
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//
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// This file is distributed under the BSD-style LDC license. See the LICENSE
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// file for details.
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//
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//===----------------------------------------------------------------------===//
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#include "target.h"
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#include "gen/irstate.h"
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#include "mars.h"
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#include "mtype.h"
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#include <assert.h>
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#if defined(_MSC_VER)
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#include <windows.h>
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#else
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#include <pthread.h>
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#endif
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int Target::ptrsize;
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int Target::realsize;
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int Target::realpad;
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int Target::realalignsize;
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int Target::c_longsize;
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int Target::c_long_doublesize;
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bool Target::reverseCppOverloads;
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void Target::init()
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{
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ptrsize = gDataLayout->getPointerSize(ADDRESS_SPACE);
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llvm::Type* real = DtoType(Type::basic[Tfloat80]);
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realsize = gDataLayout->getTypeAllocSize(real);
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realpad = realsize - gDataLayout->getTypeStoreSize(real);
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realalignsize = gDataLayout->getABITypeAlignment(real);
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c_longsize = global.params.is64bit ? 8 : 4;
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c_long_doublesize = realsize;
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reverseCppOverloads = false; // DMC is not supported.
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}
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/******************************
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* Return memory alignment size of type.
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*/
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unsigned Target::alignsize (Type* type)
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{
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assert (type->isTypeBasic());
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if (type->ty == Tvoid) return 1;
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return gDataLayout->getABITypeAlignment(DtoType(type));
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}
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/******************************
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* Return field alignment size of type.
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*/
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unsigned Target::fieldalign (Type* type)
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{
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// LDC_FIXME: Verify this.
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return type->alignsize();
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}
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// sizes based on those from tollvm.cpp:DtoMutexType()
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unsigned Target::critsecsize()
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{
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#if defined(_MSC_VER)
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// Return sizeof(RTL_CRITICAL_SECTION)
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return global.params.is64bit ? 40 : 24;
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#else
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if (global.params.targetTriple.isOSWindows())
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return global.params.is64bit ? 40 : 24;
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else if (global.params.targetTriple.getOS() == llvm::Triple::FreeBSD)
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return sizeof(size_t);
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else
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return sizeof(pthread_mutex_t);
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#endif
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}
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Type *Target::va_listType()
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{
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return Type::tchar->pointerTo();
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}
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/******************************
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* Encode the given expression, which is assumed to be an rvalue literal
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* as another type for use in CTFE.
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* This corresponds roughly to the idiom *(Type *)&e.
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*/
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Expression *Target::paintAsType(Expression *e, Type *type)
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{
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union
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{
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d_int32 int32value;
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d_int64 int64value;
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float float32value;
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double float64value;
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} u;
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assert(e->type->size() == type->size());
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switch (e->type->ty)
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{
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case Tint32:
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case Tuns32:
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u.int32value = (d_int32)e->toInteger();
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break;
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case Tint64:
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case Tuns64:
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u.int64value = (d_int64)e->toInteger();
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break;
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case Tfloat32:
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u.float32value = e->toReal();
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break;
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case Tfloat64:
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u.float64value = e->toReal();
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break;
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default:
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assert(0);
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}
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switch (type->ty)
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{
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case Tint32:
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case Tuns32:
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return new IntegerExp(e->loc, u.int32value, type);
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case Tint64:
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case Tuns64:
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return new IntegerExp(e->loc, u.int64value, type);
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case Tfloat32:
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return new RealExp(e->loc, ldouble(u.float32value), type);
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case Tfloat64:
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return new RealExp(e->loc, ldouble(u.float64value), type);
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default:
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assert(0);
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}
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return NULL; // avoid warning
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}
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/******************************
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* Check if the given type is supported for this target
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* 0: supported
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* 1: not supported
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* 2: wrong size
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* 3: wrong base type
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*/
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int Target::checkVectorType(int sz, Type *type)
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{
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// FIXME: It is possible to query the LLVM target about supported vectors?
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return 0;
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}
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