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Simplify interpreter construction.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28826 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2006-06-16 18:08:38 +00:00
parent 7c1fb5f08c
commit 276f4b5235
2 changed files with 11 additions and 21 deletions
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30
lib/ExecutionEngine/Interpreter/Interpreter.cpp
View File

@ -39,37 +39,27 @@ ExecutionEngine *Interpreter::create(ModuleProvider *MP) {
return 0; // error materializing the module.
}
bool isLittleEndian = false;
switch (M->getEndianness()) {
case Module::LittleEndian: isLittleEndian = true; break;
case Module::BigEndian: isLittleEndian = false; break;
case Module::AnyPointerSize:
if (M->getEndianness() == Module::AnyEndianness) {
int Test = 0;
*(char*)&Test = 1; // Return true if the host is little endian
isLittleEndian = (Test == 1);
break;
bool isLittleEndian = (Test == 1);
M->setEndianness(isLittleEndian ? Module::LittleEndian : Module::BigEndian);
}
bool isLongPointer = false;
switch (M->getPointerSize()) {
case Module::Pointer32: isLongPointer = false; break;
case Module::Pointer64: isLongPointer = true; break;
case Module::AnyPointerSize:
isLongPointer = (sizeof(void*) == 8); // Follow host
break;
if (M->getPointerSize() == Module::AnyPointerSize) {
// Follow host.
bool Ptr64 = sizeof(void*) == 8;
M->setPointerSize(Ptr64 ? Module::Pointer64 : Module::Pointer32);
}
return new Interpreter(M, isLittleEndian, isLongPointer);
return new Interpreter(M);
}
//===----------------------------------------------------------------------===//
// Interpreter ctor - Initialize stuff
//
Interpreter::Interpreter(Module *M, bool isLittleEndian, bool isLongPointer)
: ExecutionEngine(M),
TD("lli", isLittleEndian, isLongPointer ? 8 : 4, isLongPointer ? 8 : 4,
isLongPointer ? 8 : 4) {
Interpreter::Interpreter(Module *M) : ExecutionEngine(M), TD("lli", M) {
memset(&ExitValue, 0, sizeof(ExitValue));
setTargetData(&TD);
// Initialize the "backend"

2
lib/ExecutionEngine/Interpreter/Interpreter.h
View File

@ -94,7 +94,7 @@ class Interpreter : public ExecutionEngine, public InstVisitor<Interpreter> {
std::vector<Function*> AtExitHandlers;
public:
Interpreter(Module *M, bool isLittleEndian, bool isLongPointer);
Interpreter(Module *M);
~Interpreter();
/// runAtExitHandlers - Run any functions registered by the program's calls to