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Clauses in a landingpad are always Constant. Use a stricter type.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210203 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola 2014-06-04 18:51:31 +00:00
parent c45bee91b8
commit dcac1523c0
6 changed files with 17 additions and 15 deletions
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12
include/llvm/IR/Instructions.h
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@ -2311,12 +2311,14 @@ public:
(V ? 1 : 0));
}
/// addClause - Add a catch or filter clause to the landing pad.
void addClause(Value *ClauseVal);
/// Add a catch or filter clause to the landing pad.
void addClause(Constant *ClauseVal);
/// getClause - Get the value of the clause at index Idx. Use isCatch/isFilter
/// to determine what type of clause this is.
Value *getClause(unsigned Idx) const { return OperandList[Idx + 1]; }
/// Get the value of the clause at index Idx. Use isCatch/isFilter to
/// determine what type of clause this is.
Constant *getClause(unsigned Idx) const {
return cast<Constant>(OperandList[Idx + 1]);
}
/// isCatch - Return 'true' if the clause and index Idx is a catch clause.
bool isCatch(unsigned Idx) const {

5
lib/AsmParser/LLParser.cpp
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@ -3991,7 +3991,8 @@ bool LLParser::ParseLandingPad(Instruction *&Inst, PerFunctionState &PFS) {
else
return TokError("expected 'catch' or 'filter' clause type");
Value *V; LocTy VLoc;
Value *V;
LocTy VLoc;
if (ParseTypeAndValue(V, VLoc, PFS)) {
delete LP;
return true;
@ -4007,7 +4008,7 @@ bool LLParser::ParseLandingPad(Instruction *&Inst, PerFunctionState &PFS) {
Error(VLoc, "'filter' clause has an invalid type");
}
LP->addClause(V);
LP->addClause(cast<Constant>(V));
}
Inst = LP;

2
lib/Bitcode/Reader/BitcodeReader.cpp
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@ -2826,7 +2826,7 @@ error_code BitcodeReader::ParseFunctionBody(Function *F) {
assert((CT != LandingPadInst::Filter ||
isa<ArrayType>(Val->getType())) &&
"Filter clause has invalid type!");
LP->addClause(Val);
LP->addClause(cast<Constant>(Val));
}
I = LP;

2
lib/IR/Instructions.cpp
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@ -248,7 +248,7 @@ void LandingPadInst::growOperands(unsigned Size) {
Use::zap(OldOps, OldOps + e, true);
}
void LandingPadInst::addClause(Value *Val) {
void LandingPadInst::addClause(Constant *Val) {
unsigned OpNo = getNumOperands();
growOperands(1);
assert(OpNo < ReservedSpace && "Growing didn't work!");

3
lib/IR/Verifier.cpp
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@ -2077,8 +2077,7 @@ void Verifier::visitLandingPadInst(LandingPadInst &LPI) {
Assert1(isa<Constant>(PersonalityFn), "Personality function is not constant!",
&LPI);
for (unsigned i = 0, e = LPI.getNumClauses(); i < e; ++i) {
Value *Clause = LPI.getClause(i);
Assert1(isa<Constant>(Clause), "Clause is not constant!", &LPI);
Constant *Clause = LPI.getClause(i);
if (LPI.isCatch(i)) {
Assert1(isa<PointerType>(Clause->getType()),
"Catch operand does not have pointer type!", &LPI);

8
lib/Transforms/InstCombine/InstructionCombining.cpp
View File

@ -2099,7 +2099,7 @@ Instruction *InstCombiner::visitLandingPadInst(LandingPadInst &LI) {
// Simplify the list of clauses, eg by removing repeated catch clauses
// (these are often created by inlining).
bool MakeNewInstruction = false; // If true, recreate using the following:
SmallVector<Value *, 16> NewClauses; // - Clauses for the new instruction;
SmallVector<Constant *, 16> NewClauses; // - Clauses for the new instruction;
bool CleanupFlag = LI.isCleanup(); // - The new instruction is a cleanup.
SmallPtrSet<Value *, 16> AlreadyCaught; // Typeinfos known caught already.
@ -2107,7 +2107,7 @@ Instruction *InstCombiner::visitLandingPadInst(LandingPadInst &LI) {
bool isLastClause = i + 1 == e;
if (LI.isCatch(i)) {
// A catch clause.
Value *CatchClause = LI.getClause(i);
Constant *CatchClause = LI.getClause(i);
Constant *TypeInfo = cast<Constant>(CatchClause->stripPointerCasts());
// If we already saw this clause, there is no point in having a second
@ -2137,7 +2137,7 @@ Instruction *InstCombiner::visitLandingPadInst(LandingPadInst &LI) {
// equal (for example if one represents a C++ class, and the other some
// class derived from it).
assert(LI.isFilter(i) && "Unsupported landingpad clause!");
Value *FilterClause = LI.getClause(i);
Constant *FilterClause = LI.getClause(i);
ArrayType *FilterType = cast<ArrayType>(FilterClause->getType());
unsigned NumTypeInfos = FilterType->getNumElements();
@ -2287,7 +2287,7 @@ Instruction *InstCombiner::visitLandingPadInst(LandingPadInst &LI) {
continue;
// If Filter is a subset of LFilter, i.e. every element of Filter is also
// an element of LFilter, then discard LFilter.
SmallVectorImpl<Value *>::iterator J = NewClauses.begin() + j;
SmallVectorImpl<Constant *>::iterator J = NewClauses.begin() + j;
// If Filter is empty then it is a subset of LFilter.
if (!FElts) {
// Discard LFilter.