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Sparse err #2389

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5 changes: 5 additions & 0 deletions enzyme/Enzyme/FunctionUtils.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -8038,6 +8038,11 @@ void replaceToDense(llvm::CallBase *CI, bool replaceAll, llvm::Function *F,
continue;
}
if (auto SI = dyn_cast<StoreInst>(U)) {
if (SI->getValueOperand() == val) {
EmitFailure("IllegalSparse", SI->getDebugLoc(), SI,
" result of __enzyme_todense was captured (e.g. stored into memory and not directly loaded from or stored into) ", *SI);
continue;
}
assert(SI->getValueOperand() != val);
auto diff = toInt(B, replacements[SI->getPointerOperand()]);
SmallVector<Value *, 2> args;
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1 change: 1 addition & 0 deletions enzyme/test/Integration/Sparse/ringspring.cpp
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Original file line number Diff line number Diff line change
@@ -1,5 +1,6 @@
// This should work on LLVM 7, 8, 9, however in CI the version of clang installed on Ubuntu 18.04 cannot load
// a clang plugin properly without segfaulting on exit. This is fine on Ubuntu 20.04 or later LLVM versions...
// RUN: if [ %llvmver -ge 12 ]; then %clang++ -fno-exceptions -ffast-math -mllvm -enable-load-pre=0 -std=c++11 -O0 %s -S -emit-llvm -o - %loadClangEnzyme -mllvm -enzyme-auto-sparsity=1 | %lli - ; fi
// RUN: if [ %llvmver -ge 12 ]; then %clang++ -fno-exceptions -ffast-math -mllvm -enable-load-pre=0 -std=c++11 -O1 %s -S -emit-llvm -o - %loadClangEnzyme -mllvm -enzyme-auto-sparsity=1 | %lli - ; fi
// RUN: if [ %llvmver -ge 12 ]; then %clang++ -fno-exceptions -ffast-math -mllvm -enable-load-pre=0 -std=c++11 -O2 %s -S -emit-llvm -o - %loadClangEnzyme -mllvm -enzyme-auto-sparsity=1 | %lli - ; fi
// RUN: if [ %llvmver -ge 12 ]; then %clang++ -fno-exceptions -ffast-math -mllvm -enable-load-pre=0 -std=c++11 -O3 %s -S -emit-llvm -o - %loadClangEnzyme -mllvm -enzyme-auto-sparsity=1 | %lli - ; fi
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