<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/63370>63370</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [MLIR] Bare pointer memref lowering crashes on dynamic memrefs
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
      </td>
    </tr>

    <tr>
      <th>Assignees</th>
      <td>
      </td>
    </tr>

    <tr>
      <th>Reporter</th>
      <td>
          bondhugula
      </td>
    </tr>
</table>

<pre>
    Bare pointer memref lowering isn't expected to work on dynamic memrefs, but shouldn't crash on such input either.

Reproduce on git version on `test/Integration/GPU/CUDA/gpu-to-cubin.mlir` for example, by adding the option `use-bare-ptr-memref-call-conv=1` to gpu-to-nvvm in its run line. The result is a segfault with a trace like:
```
Command Output (stderr):
--
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.
Stack dump:
0.      Program arguments: /home/uday/llvm-project-upstream/build/bin/mlir-opt -pass-pipeline=builtin.module(gpu.module(strip-debuginfo,convert-gpu-to-nvvm{use-bare-ptr-memref-call-conv=1},gpu-to-cubin))
 #0 0x00005589c27a448f llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/home/uday/llvm-project-upstream/build/bin/mlir-opt+0x237948f)
 #1 0x00005589c27a1f04 SignalHandler(int) Signals.cpp:0:0
 #2 0x00007f94f903c420 __restore_rt (/lib/x86_64-linux-gnu/libpthread.so.0+0x14420)
 #3 0x00005589c4b2db67 mlir::Type::getContext() const (/home/uday/llvm-project-upstream/build/bin/mlir-opt+0x4702b67)
 #4 0x00005589c4a62b85 mlir::TypeAttr::get(mlir::Type) (/home/uday/llvm-project-upstream/build/bin/mlir-opt+0x4637b85)
 #5 0x00005589c329aaf8 mlir::LLVM::LLVMFuncOp::build(mlir::OpBuilder&, mlir::OperationState&, llvm::StringRef, mlir::Type, mlir::LLVM::linkage::Linkage, bool, mlir::LLVM::cconv::CConv, llvm::ArrayRef<mlir::NamedAttribute>, llvm::ArrayRef<mlir::DictionaryAttr>, std::optional<unsigned long>) (/home/uday/llvm-project-upstream/build/bin/mlir-opt+0x2e6faf8)
 #6 0x00005589c4160fad mlir::GPUFuncOpLowering::matchAndRewrite(mlir::gpu::GPUFuncOp, mlir::gpu::GPUFuncOpAdaptor, mlir::ConversionPatternRewriter&) const (/home/uday/llvm-project-upstream/build/bin/mlir-opt+0x3d35fad)
 #7 0x00005589c413d6e7 mlir::ConvertOpToLLVMPattern<mlir::gpu::GPUFuncOp>::matchAndRewrite(mlir::Operation*, llvm::ArrayRef<mlir::Value>, mlir::ConversionPatternRewriter&) const LowerGpuOpsToNVVMOps.cpp:0:0
 #8 0x00005589c49b8959 mlir::ConversionPattern::matchAndRewrite(mlir::Operation*, mlir::PatternRewriter&) const (/home/uday/llvm-project-upstream/build/bin/mlir-opt+0x458d959)
```
</pre>
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