[PATCH] D159053: [RISCV] Support select/merge like ops for fp16 vectors when only have Zvfhmin

[Michael Maitland via Phabricator via llvm-commits]

michaelmaitland added inline comments.


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Comment at: llvm/lib/Target/RISCV/RISCVISelLowering.cpp:13988
+    // For splat_vector to fp16 vectors when we only have zvfhmin, we promote it
+    // to fp_round(vf32 splat_vector(c)). But the constant folder of getNode
+    // would fold fp_round(vf32 splat_vector(c)) back to vf16 splat_vector(c)
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How does this approach compare to making the constant folder of getNode not do the fold when only have zvfhmin?


Repository:
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  https://reviews.llvm.org/D159053/new/

https://reviews.llvm.org/D159053