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-rw-r--r--llvm/lib/Target/X86/X86ISelLowering.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/llvm/lib/Target/X86/X86ISelLowering.h b/llvm/lib/Target/X86/X86ISelLowering.h
index db36bcb929e36..d873edb857a88 100644
--- a/llvm/lib/Target/X86/X86ISelLowering.h
+++ b/llvm/lib/Target/X86/X86ISelLowering.h
@@ -422,7 +422,8 @@ namespace llvm {
// Tests Types Of a FP Values for scalar types.
VFPCLASSS,
- // Broadcast scalar to vector.
+ // Broadcast (splat) scalar or element 0 of a vector. If the operand is
+ // a vector, this node may change the vector length as part of the splat.
VBROADCAST,
// Broadcast mask to vector.
VBROADCASTM,