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[bug] AffineApplyNormalizer assert Error #421

Description

@sBobHuang

When running my code using cgeist with the --raise-scf-to-affine option, I encountered the following error:

cgeist: ../lib/polygeist/Passes/AffineCFG.cpp:534: AffineApplyNormalizer::AffineApplyNormalizer(mlir::AffineMap, llvm::ArrayRefmlir::Value, mlir::PatternRewriter&, mlir::DominanceInfo&): Assertion `isValidSymbolInt(t, false)' failed.
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.

Use the following minimal code example (saved as test.c) that reproduces the error,run the code using cgeist test.c --raise-scf-to-affine --function=* -S --memref-fullrank -o test.mlir

void nested_loop_using_variable_as_step(int vali[20][30]) {
  int stepx = vali[0][0];
  for (int x = 0; x < 20; x++) {
    for (int y = 1; y < 30; y += stepx) {
      vali[x][y] = 1;
    }
  }
}

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