maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

[Bitcode] Delete phi node on error 

These error conditions are checked after the phi node has been
created, so we also need to delete it.
This commit is contained in:
Nikita Popov 2022-03-11 11:35:15 +01:00
parent ba3380026a
commit 36be8fabb0
1 changed files with 6 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
llvm/lib/Bitcode/Reader/BitcodeReader.cpp
View File

@ -5197,8 +5197,10 @@ Error BitcodeReader::parseFunctionBody(Function *F) {
// floating-point type.
size_t NumArgs = (Record.size() - 1) / 2;
PHINode *PN = PHINode::Create(Ty, NumArgs);
if ((Record.size() - 1) % 2 == 1 && !isa<FPMathOperator>(PN))
if ((Record.size() - 1) % 2 == 1 && !isa<FPMathOperator>(PN)) {
PN->deleteValue();
return error("Invalid phi record");
}
InstructionList.push_back(PN);
for (unsigned i = 0; i != NumArgs; i++) {
@ -5211,8 +5213,10 @@ Error BitcodeReader::parseFunctionBody(Function *F) {
else
V = getValue(Record, i * 2 + 1, NextValueNo, Ty, TyID);
BasicBlock *BB = getBasicBlock(Record[i * 2 + 2]);
if (!V || !BB)
if (!V || !BB) {
PN->deleteValue();
return error("Invalid phi record");
}
PN->addIncoming(V, BB);
}
I = PN;