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PowerPC backend uses FCFID* and FCTI(D|W)* as custom ISD node name for in-place conversion between float and integers. But we do not always use these instructions.

Also, separate nodes from int to f32/f64/f128 are not needed, since we can differentiate them by node types.

Migrated from https://reviews.llvm.org/D148494

PowerPC backend uses `FCFID*` and `FCTI(D|W)*` as custom ISD node name
for in-place conversion between float and integers. But we do not always
use these instructions.

Also, separate nodes from int to f32/f64/f128 are not needed, since we
can differentiate them by node types.
@ecnelises ecnelises closed this Oct 21, 2024
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