[flang-commits] [flang] [Flang][HLFIR] Lower PACK(array, .TRUE.) to hlfir.reshape (PR #213603)

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ejose02 wrote:

@vzakhari @tblah , Thanks for the review. I have made a new commit addressing the concerns. I have created the hlfir.pack op in the new commit. 
The genHLFIRIntrinsicRefCore doc comment is back, and the extent product stays in index through fir.shape (no default-integer truncation). For the SHAPE temp, I dropped the reshape hop and canonicalize scalar .TRUE. PACK straight to hlfir.elemental with the same copy kernel as reshape inlining. I also expanded simplify-hlfir-intrinsics-pack.fir with few more tests as well.

https://github.com/llvm/llvm-project/pull/213603