[llvm] [WebAssembly][FastISel] Emit signed loads for sext of i8/i16/i32 (PR #182333)

[via llvm-commits]

ParkHanbum wrote:

@QuantumSegfault To move this implementation to tryToFoldLoadIntoMI, we'd have to revert most of the code changes. Would it be better to move it to a new PR? 


https://github.com/llvm/llvm-project/pull/182333