[PATCH] D118222: [RISCV] Split f64 undef into two integer undefs

[Fraser Cormack via Phabricator via llvm-commits]

frasercrmck added a comment.

This could do with some tests to show the effect on codegen.



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Comment at: llvm/lib/Target/RISCV/RISCVISelLowering.cpp:8362
+  // If the source is undef, we split it into two integer undefs. No need to
+  // remove SrcDef since pass `processimpdefs` will do the favor.
+  MachineInstr* SrcDef = RegInfo.getVRegDef(SrcReg);
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"since the ProcessImplicitDefs pass will do it for us". I don't think referring to the `DEBUG_TYPE` is as helpful.


Repository:
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  https://reviews.llvm.org/D118222/new/

https://reviews.llvm.org/D118222