diff options
Diffstat (limited to 'llvm/lib/Analysis/ConstantFolding.cpp')
| -rw-r--r-- | llvm/lib/Analysis/ConstantFolding.cpp | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/llvm/lib/Analysis/ConstantFolding.cpp b/llvm/lib/Analysis/ConstantFolding.cpp index 1c6709c..af25dab 100644 --- a/llvm/lib/Analysis/ConstantFolding.cpp +++ b/llvm/lib/Analysis/ConstantFolding.cpp @@ -3041,10 +3041,18 @@ Constant *llvm::ConstantFoldCall(const CallBase *Call, Function *F, return nullptr; if (!F->hasName()) return nullptr; - StringRef Name = F->getName(); - Type *Ty = F->getReturnType(); + // If this is not an intrinsic and not recognized as a library call, bail out. + if (F->getIntrinsicID() == Intrinsic::not_intrinsic) { + if (!TLI) + return nullptr; + LibFunc LibF; + if (!TLI->getLibFunc(*F, LibF)) + return nullptr; + } + StringRef Name = F->getName(); + Type *Ty = F->getReturnType(); if (auto *FVTy = dyn_cast<FixedVectorType>(Ty)) return ConstantFoldFixedVectorCall( Name, F->getIntrinsicID(), FVTy, Operands, @@ -3055,6 +3063,9 @@ Constant *llvm::ConstantFoldCall(const CallBase *Call, Function *F, Name, F->getIntrinsicID(), SVTy, Operands, F->getParent()->getDataLayout(), TLI, Call); + // TODO: If this is a library function, we already discovered that above, + // so we should pass the LibFunc, not the name (and it might be better + // still to separate intrinsic handling from libcalls). return ConstantFoldScalarCall(Name, F->getIntrinsicID(), Ty, Operands, TLI, Call); } |