1 files changed, 12 insertions, 2 deletions
diff --git a/llvm/lib/Target/X86/X86ISelLowering.h b/llvm/lib/Target/X86/X86ISelLowering.h
index a6dd76253c3..57ba49b5035 100644
--- a/llvm/lib/Target/X86/X86ISelLowering.h
+++ b/llvm/lib/Target/X86/X86ISelLowering.h
@@ -392,11 +392,21 @@ namespace llvm {
       UNPCKH,
       VPERMILPV,
       VPERMILPI,
+      VPERMI,
+      VPERM2X128,
+
+      // Variable Permute (VPERM)
+      // Res = VPERMV MaskV, V0
       VPERMV,
+
+      // 3-op Variable Permute (VPERMT2)
+      // Res = VPERMV3 V0, MaskV, V1
       VPERMV3,
+
+      // 3-op Variable Permute overwriting the index (VPERMI2)
+      // Res = VPERMIV3 V0, MaskV, V1
       VPERMIV3,
-      VPERMI,
-      VPERM2X128,
+
       // Bitwise ternary logic
       VPTERNLOG,
       // Fix Up Special Packed Float32/64 values