[clang][bytecode] Handle invalid temporary descriptors #125033
Merged
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
llvmbot
added
clang
|
@llvm/pr-subscribers-clang Author: Timm Baeder (tbaederr) ChangesThis happens e.g. when a vector element type is not primitive. Full diff: https://github.com/llvm/llvm-project/pull/125033.diff 2 Files Affected:
diff --git a/clang/lib/AST/ByteCode/Compiler.cpp b/clang/lib/AST/ByteCode/Compiler.cpp
index 4659d0e00784d9..f7f4f713c787f2 100644
--- a/clang/lib/AST/ByteCode/Compiler.cpp
+++ b/clang/lib/AST/ByteCode/Compiler.cpp
@@ -562,8 +562,10 @@ bool Compiler<Emitter>::VisitCastExpr(const CastExpr *CE) {
// We're creating a complex value here, so we need to
// allocate storage for it.
if (!Initializing) {
- unsigned LocalIndex = allocateTemporary(CE);
- if (!this->emitGetPtrLocal(LocalIndex, CE))
+ std::optional<unsigned> LocalIndex = allocateTemporary(CE);
+ if (!LocalIndex)
+ return false;
+ if (!this->emitGetPtrLocal(*LocalIndex, CE))
return false;
}
@@ -679,8 +681,10 @@ bool Compiler<Emitter>::VisitCastExpr(const CastExpr *CE) {
assert(CE->getType()->isVectorType());
if (!Initializing) {
- unsigned LocalIndex = allocateTemporary(CE);
- if (!this->emitGetPtrLocal(LocalIndex, CE))
+ std::optional<unsigned> LocalIndex = allocateTemporary(CE);
+ if (!LocalIndex)
+ return false;
+ if (!this->emitGetPtrLocal(*LocalIndex, CE))
return false;
}
unsigned ToSize = CE->getType()->getAs<VectorType>()->getNumElements();
@@ -759,8 +763,10 @@ bool Compiler<Emitter>::VisitImaginaryLiteral(const ImaginaryLiteral *E) {
return true;
if (!Initializing) {
- unsigned LocalIndex = allocateTemporary(E);
- if (!this->emitGetPtrLocal(LocalIndex, E))
+ std::optional<unsigned> LocalIndex = allocateTemporary(E);
+ if (!LocalIndex)
+ return false;
+ if (!this->emitGetPtrLocal(*LocalIndex, E))
return false;
}
@@ -1118,8 +1124,10 @@ template <class Emitter>
bool Compiler<Emitter>::VisitComplexBinOp(const BinaryOperator *E) {
// Prepare storage for result.
if (!Initializing) {
- unsigned LocalIndex = allocateTemporary(E);
- if (!this->emitGetPtrLocal(LocalIndex, E))
+ std::optional<unsigned> LocalIndex = allocateTemporary(E);
+ if (!LocalIndex)
+ return false;
+ if (!this->emitGetPtrLocal(*LocalIndex, E))
return false;
}
@@ -1175,7 +1183,10 @@ bool Compiler<Emitter>::VisitComplexBinOp(const BinaryOperator *E) {
if (!LHSIsComplex) {
// This is using the RHS type for the fake-complex LHS.
- LHSOffset = allocateTemporary(RHS);
+ std::optional<unsigned> LocalIndex = allocateTemporary(RHS);
+ if (!LocalIndex)
+ return false;
+ LHSOffset = *LocalIndex;
if (!this->emitGetPtrLocal(LHSOffset, E))
return false;
@@ -1347,8 +1358,10 @@ bool Compiler<Emitter>::VisitVectorBinOp(const BinaryOperator *E) {
// Prepare storage for result.
if (!Initializing && !E->isCompoundAssignmentOp()) {
- unsigned LocalIndex = allocateTemporary(E);
- if (!this->emitGetPtrLocal(LocalIndex, E))
+ std::optional<unsigned> LocalIndex = allocateTemporary(E);
+ if (!LocalIndex)
+ return false;
+ if (!this->emitGetPtrLocal(*LocalIndex, E))
return false;
}
@@ -4170,14 +4183,16 @@ Compiler<Emitter>::allocateLocal(DeclTy &&Src, QualType Ty,
}
template <class Emitter>
-unsigned Compiler<Emitter>::allocateTemporary(const Expr *E) {
+std::optional<unsigned> Compiler<Emitter>::allocateTemporary(const Expr *E) {
QualType Ty = E->getType();
assert(!Ty->isRecordType());
Descriptor *D = P.createDescriptor(
E, Ty.getTypePtr(), Descriptor::InlineDescMD, Ty.isConstQualified(),
/*IsTemporary=*/true, /*IsMutable=*/false, /*Init=*/nullptr);
- assert(D);
+
+ if (!D)
+ return std::nullopt;
Scope::Local Local = this->createLocal(D);
VariableScope<Emitter> *S = VarScope;
diff --git a/clang/lib/AST/ByteCode/Compiler.h b/clang/lib/AST/ByteCode/Compiler.h
index f9a597a16ef4ae..5a02f38d78dec8 100644
--- a/clang/lib/AST/ByteCode/Compiler.h
+++ b/clang/lib/AST/ByteCode/Compiler.h
@@ -309,7 +309,7 @@ class Compiler : public ConstStmtVisitor<Compiler<Emitter>, bool>,
std::optional<unsigned>
allocateLocal(DeclTy &&Decl, QualType Ty = QualType(),
const ValueDecl *ExtendingDecl = nullptr);
- unsigned allocateTemporary(const Expr *E);
+ std::optional<unsigned> allocateTemporary(const Expr *E);
private:
friend class VariableScope<Emitter>;
|
This happens e.g. when a vector element type is not primitive.
tbaederr
force-pushed
the
invalid-temporaries
branch
from
c63d51e to
0269823
Compare
|
LLVM Buildbot has detected a new failure on builder Full details are available at: https://lab.llvm.org/buildbot/#/builders/50/builds/9675 Here is the relevant piece of the build log for the reference |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
This happens e.g. when a vector element type is not primitive.