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Add some basic checks of CallInst's.

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Assert now returns from the current function on error.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2308 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2002-04-18 22:11:52 +00:00
parent 7b5577b371
commit efdd0a2c2e
1 changed files with 17 additions and 8 deletions
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25
lib/VMCore/Verifier.cpp
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@ -41,6 +41,7 @@
#include "llvm/DerivedTypes.h"
#include "llvm/iPHINode.h"
#include "llvm/iTerminators.h"
#include "llvm/iOther.h"
#include "llvm/Argument.h"
#include "llvm/SymbolTable.h"
#include "llvm/Support/CFG.h"
@ -71,6 +72,7 @@ namespace { // Anonymous namespace for class
void visitBasicBlock(BasicBlock *BB);
void visitPHINode(PHINode *PN);
void visitBinaryOperator(BinaryOperator *B);
void visitCallInst(CallInst *CI);
void visitInstruction(Instruction *I);
// CheckFailed - A check failed, so print out the condition and the message
@ -89,11 +91,11 @@ namespace { // Anonymous namespace for class
// Assert - We know that cond should be true, if not print an error message.
#define Assert(C, M) \
do { if (!(C)) { CheckFailed(#C, M); } } while (0)
do { if (!(C)) { CheckFailed(#C, M); return; } } while (0)
#define Assert1(C, M, V1) \
do { if (!(C)) { CheckFailed(#C, M, V1); } } while (0)
do { if (!(C)) { CheckFailed(#C, M, V1); return; } } while (0)
#define Assert2(C, M, V1, V2) \
do { if (!(C)) { CheckFailed(#C, M, V1, V2); } } while (0)
do { if (!(C)) { CheckFailed(#C, M, V1, V2); return; } } while (0)
// verifySymbolTable - Verify that a function or module symbol table is ok
@ -156,7 +158,7 @@ void Verifier::visitBasicBlock(BasicBlock *BB) {
Assert1(BB->getTerminator(), "Basic Block does not have terminator!\n", BB);
// Check that the terminator is ok as well...
if (BB->getTerminator() && isa<ReturnInst>(BB->getTerminator())) {
if (isa<ReturnInst>(BB->getTerminator())) {
Instruction *I = BB->getTerminator();
Function *F = I->getParent()->getParent();
if (I->getNumOperands() == 0)
@ -189,7 +191,7 @@ void Verifier::visitPHINode(PHINode *PN) {
find(Preds.begin(), Preds.end(), BB);
Assert2(PI != Preds.end(), "PHI node has entry for basic block that"
" is not a predecessor!", PN, BB);
if (PI != Preds.end()) Preds.erase(PI);
Preds.erase(PI);
}
// There should be no entries left in the predecessor list...
@ -201,6 +203,13 @@ void Verifier::visitPHINode(PHINode *PN) {
visitInstruction(PN);
}
void Verifier::visitCallInst(CallInst *CI) {
Assert1(isa<PointerType>(CI->getOperand(0)->getType()),
"Called function must be a pointer!", CI);
PointerType *FPTy = cast<PointerType>(CI->getOperand(0)->getType());
Assert1(isa<FunctionType>(FPTy->getElementType()),
"Called function is not pointer to function type!", CI);
}
// visitBinaryOperator - Check that both arguments to the binary operator are
// of the same type!
@ -227,9 +236,9 @@ void Verifier::visitInstruction(Instruction *I) {
UI != UE; ++UI) {
Assert1(isa<Instruction>(*UI), "Use of instruction is not an instruction!",
*UI);
if (Instruction *Used = dyn_cast<Instruction>(*UI))
Assert2(Used->getParent() != 0, "Instruction referencing instruction not"
" embeded in a basic block!", I, Used);
Instruction *Used = cast<Instruction>(*UI);
Assert2(Used->getParent() != 0, "Instruction referencing instruction not"
" embeded in a basic block!", I, Used);
}
if (!isa<PHINode>(I)) { // Check that non-phi nodes are not self referential