mirror of
https://github.com/RPCS3/llvm.git
synced 2024-12-28 07:05:03 +00:00
85b0bb175f
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@443 91177308-0d34-0410-b5e6-96231b3b80d8
90 lines
3.3 KiB
C++
90 lines
3.3 KiB
C++
//===-- Verifier.cpp - Implement the Module Verifier -------------*- C++ -*-==//
|
|
//
|
|
// This file defines the method verifier interface, that can be used for some
|
|
// sanity checking of input to the system.
|
|
//
|
|
// Note that this does not provide full 'java style' security and verifications,
|
|
// instead it just tries to ensure that code is well formed.
|
|
//
|
|
// . There are no duplicated names in a symbol table... ie there !exist a val
|
|
// with the same name as something in the symbol table, but with a different
|
|
// address as what is in the symbol table...
|
|
// . Both of a binary operator's parameters are the same type
|
|
// . All of the constants in a switch statement are of the correct type
|
|
// . The code is in valid SSA form
|
|
// . It should be illegal to put a label into any other type (like a structure)
|
|
// or to return one. [except constant arrays!]
|
|
// . Right now 'add bool 0, 0' is valid. This isn't particularly good.
|
|
// . Only phi nodes can be self referential: 'add int 0, 0 ; <int>:0' is bad
|
|
// . PHI nodes must have an entry for each predecessor, with no extras.
|
|
// . All other things that are tested by asserts spread about the code...
|
|
// . All basic blocks should only end with terminator insts, not contain them
|
|
// . All methods must have >= 1 basic block
|
|
// . Verify that none of the Def getType()'s are null.
|
|
// . Method's cannot take a void typed parameter
|
|
// . Verify that a method's argument list agrees with it's declared type.
|
|
// . Verify that arrays and structures have fixed elements: No unsized arrays.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/Analysis/Verifier.h"
|
|
#include "llvm/Method.h"
|
|
#include "llvm/Module.h"
|
|
#include "llvm/BasicBlock.h"
|
|
#include "llvm/Type.h"
|
|
|
|
// Error - Define a macro to do the common task of pushing a message onto the
|
|
// end of the error list and setting Bad to true.
|
|
//
|
|
#define Error(msg) do { ErrorMsgs.push_back(msg); Bad = true; } while (0)
|
|
|
|
#define t(x) (1 << (unsigned)Type::x)
|
|
|
|
#define SignedIntegralTypes (t(SByteTyID) | t(ShortTyID) | \
|
|
t(IntTyID) | t(LongTyID))
|
|
static long UnsignedIntegralTypes = t(UByteTyID) | t(UShortTyID) |
|
|
t(UIntTyID) | t(ULongTyID);
|
|
static const long FloatingPointTypes = t(FloatTyID) | t(DoubleTyID);
|
|
|
|
static const long IntegralTypes = SignedIntegralTypes | UnsignedIntegralTypes;
|
|
|
|
#if 0
|
|
static long ValidTypes[Type::FirstDerivedTyID] = {
|
|
[(unsigned)Instruction::UnaryOps::Not] t(BoolTyID),
|
|
//[Instruction::UnaryOps::Add] = IntegralTypes,
|
|
// [Instruction::Sub] = IntegralTypes,
|
|
};
|
|
#endif
|
|
|
|
#undef t
|
|
|
|
static bool verify(const BasicBlock *BB, vector<string> &ErrorMsgs) {
|
|
bool Bad = false;
|
|
if (BB->getTerminator() == 0) Error("Basic Block does not have terminator!");
|
|
|
|
|
|
return Bad;
|
|
}
|
|
|
|
|
|
bool verify(const Method *M, vector<string> &ErrorMsgs) {
|
|
bool Bad = false;
|
|
|
|
for (Method::const_iterator BBIt = M->begin();
|
|
BBIt != M->end(); ++BBIt)
|
|
Bad |= verify(*BBIt, ErrorMsgs);
|
|
|
|
return Bad;
|
|
}
|
|
|
|
bool verify(const Module *C, vector<string> &ErrorMsgs) {
|
|
bool Bad = false;
|
|
assert(Type::FirstDerivedTyID-1 < sizeof(long)*8 &&
|
|
"Resize ValidTypes table to handle more than 32 primitive types!");
|
|
|
|
for (Module::const_iterator MI = C->begin(); MI != C->end(); ++MI)
|
|
Bad |= verify(*MI, ErrorMsgs);
|
|
|
|
return Bad;
|
|
}
|