steven.zhang added a comment.
I think some follow up is needed to optimize the code sequence for
cr = vec_test_div
if (rotate_and_mask(cr, 62))
...
For now, we will copy the cr to gpr, and shift it to 61-64 bit,then, extract
the bit and then compare to 0. the shift is not needed. Please double confirm
to see if the peephole handle it well.
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D88278/new/
https://reviews.llvm.org/D88278
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