Assertion `V.getNode() && "Getting TableId on SDValue()"' failed.

[Vsevolod-Livinskij]

ISPC fails with

>$ispc --target=avx2-i32x16 -o func.o func.ispc
ispc: /llvm-10.0/llvm/lib/CodeGen/SelectionDAG/LegalizeTypes.h:137: llvm::DAGTypeLegalizer::TableId llvm::DAGTypeLegalizer::getTableId(llvm::SDValue): Assertion `V.getNode() && "Getting TableId on SDValue()"' failed.

Reproducer:

extern uniform bool arr_4 [17];
export void test(uniform int64 var_1, uniform bool var_15) {
    foreach(i_0 = var_1...16U)
        arr_4 [i_0] = !(varying bool) reduce_min(180) ? 5923697687793782713ULL : (varying bool) var_15;
}

ISPC version:
1.14.0dev (build commit 763adc5 @ 20200526, LLVM 10.0.0)

[DeepakRajendrakumaran]

This is a llvm codegen crash with O2 opt. It's fine with O0. Might possibly be a llvm thing. Have to confirm.

[DeepakRajendrakumaran]

This has already been fixed in llvm trunk - https://reviews.llvm.org/D76994

@dbabokin you want me to go ahead and port the patch?

[dbabokin]

Yes.