| Issue |
96047
|
| Summary |
[mlir] Do not generate sizeof expressions using GEP
|
| Labels |
mlir
|
| Assignees |
|
| Reporter |
nikic
|
Lowering MemRef to LLVM dialect currently generates `ptrtoint (getelementptr null, 1)` style sizeof expressions using this helper:
https://github.com/llvm/llvm-project/blob/cfb4dce90ce66acbd094e443f422c4e5c413a9e8/mlir/lib/Conversion/LLVMCommon/Pattern.cpp#L171-L184
These need to be replaced with an emission of a constant based on the DataLayout.
The ability to generate the expressions in this form will go away entirely with https://discourse.llvm.org/t/rfc-replacing-getelementptr-with-ptradd/68699 and causes problems for https://discourse.llvm.org/t/rfc-remove-most-constant-expressions/63179 as well.
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