Add DecodeShuffle shuffle support for VPERMIPD variantes

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136452 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 8 insertions, 7 deletions

diff --git a/lib/Target/X86/Utils/X86ShuffleDecode.h b/lib/Target/X86/Utils/X86ShuffleDecode.h
index 4a5214028f..1b11c6e3c2 100644
--- a/lib/Target/X86/Utils/X86ShuffleDecode.h
+++ b/lib/Target/X86/Utils/X86ShuffleDecode.h
@@ -83,19 +83,20 @@ void DecodeUNPCKLPMask(EVT VT,
                        SmallVectorImpl<unsigned> &ShuffleMask);
 
 
+// DecodeVPERMILPSMask - Decodes VPERMILPS permutes for any 128-bit 32-bit
+// elements. For 256-bit vectors, it's considered as two 128 lanes, the
+// referenced elements can't cross lanes and the mask of the first lane must
+// be the same of the second.
 void DecodeVPERMILPSMask(unsigned NElts, unsigned Imm,
                         SmallVectorImpl<unsigned> &ShuffleMask);
 
+// DecodeVPERMILPDMask - Decodes VPERMILPD permutes for any 128-bit 64-bit
+// elements. For 256-bit vectors, it's considered as two 128 lanes, the
+// referenced elements can't cross lanes but the mask of the first lane can
+// be the different of the second (not like VPERMILPS).
 void DecodeVPERMILPDMask(unsigned NElts, unsigned Imm,
                         SmallVectorImpl<unsigned> &ShuffleMask);
 
-// DecodeVPERMILMask - Decodes VPERMIL permutes for any 128-bit
-// with 32/64-bit elements. For 256-bit vectors, it's considered
-// as two 128 lanes and the mask of the first lane should be
-// identical of the second one.
-void DecodeVPERMILMask(EVT VT, unsigned Imm,
-                       SmallVectorImpl<unsigned> &ShuffleMask);
-
 } // llvm namespace
 
 #endif