[PATCH] D80131: [x86] favor vector constant load to avoid GPR to XMM transfer, part 2

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon added inline comments.


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Comment at: llvm/lib/Target/X86/X86ISelLowering.cpp:35802
+        return DAG.getLoad(VT, DL, DAG.getEntryNode(), CP, MPI, Alignment,
+                           MachineMemOperand::MOLoad);
+      }
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Would creating X86ISD::VZEXT_LOAD be better? We'd need to zext i8/i16 cases to i32 constant pool entries but we'd avoid the upper zero constants.


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  https://reviews.llvm.org/D80131/new/

https://reviews.llvm.org/D80131