[PATCH] D108725: [AArch64][GlobalISel] Implement custom legalization for s32/s64 G_FCOPYSIGN

[Amara Emerson via Phabricator via llvm-commits]

aemerson added inline comments.


================
Comment at: llvm/lib/Target/AArch64/GISel/AArch64LegalizerInfo.cpp:1393
+  auto Zero = MIRBuilder.buildConstant(DstTy, 0);
+  auto Ins1 = MIRBuilder.buildInsertVectorElement(
+      VecTy, Undef, MI.getOperand(1).getReg(), Zero);
----------------
What if we use G_MERGE instead? Do we get an INSERT_SUBREG?


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D108725/new/

https://reviews.llvm.org/D108725