[PATCH] D56478: GlobalISel: Add comment to clarify G_BUILD_VECTOR

[Matt Arsenault via Phabricator via llvm-commits]

arsenm created this revision.
arsenm added reviewers: aditya_nandakumar, aemerson.
Herald added subscribers: kristof.beyls, rovka, wdng.

https://reviews.llvm.org/D56478

Files:
  include/llvm/Target/GenericOpcodes.td


Index: include/llvm/Target/GenericOpcodes.td
===================================================================
--- include/llvm/Target/GenericOpcodes.td
+++ include/llvm/Target/GenericOpcodes.td
@@ -689,7 +689,9 @@
   let hasSideEffects = 0;
 }
 
-/// Create a vector from multiple scalar registers.
+/// Create a vector from multiple scalar registers. No implicit
+/// conversion is performed (i.e. the result element type must be the
+/// same as all source operands)
 def G_BUILD_VECTOR : GenericInstruction {
   let OutOperandList = (outs type0:$dst);
   let InOperandList = (ins type1:$src0, variable_ops);


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