[X86][NFC] Remove unused encoding string: VK[1/2/4/8/16]PAIR

This is also a bug. The VK[1/2/4/8/16]PAIR here should be VK[1/2/4/8/16]Pair which has its
custom PrintMethod and ParserMatchClass. However we don't have any instructions using vvvv
and ModR/M.REG field so this issue is not exposed.

Differential Revision: https://reviews.llvm.org/D109564

diff --git a/llvm/utils/TableGen/X86RecognizableInstr.cpp b/llvm/utils/TableGen/X86RecognizableInstr.cpp
index 02d7fd8..1a918c0 100644 (file)
--- a/llvm/utils/TableGen/X86RecognizableInstr.cpp
+++ b/llvm/utils/TableGen/X86RecognizableInstr.cpp
@@ -1065,11 +1065,6 @@ RecognizableInstr::rmRegisterEncodingFromString(const std::string &s,
   ENCODING("VK16",            ENCODING_RM)
   ENCODING("VK32",            ENCODING_RM)
   ENCODING("VK64",            ENCODING_RM)
-  ENCODING("VK1PAIR",         ENCODING_RM)
-  ENCODING("VK2PAIR",         ENCODING_RM)
-  ENCODING("VK4PAIR",         ENCODING_RM)
-  ENCODING("VK8PAIR",         ENCODING_RM)
-  ENCODING("VK16PAIR",        ENCODING_RM)
   ENCODING("BNDR",            ENCODING_RM)
   ENCODING("TILE",            ENCODING_RM)
   errs() << "Unhandled R/M register encoding " << s << "\n";
@@ -1148,11 +1143,6 @@ RecognizableInstr::vvvvRegisterEncodingFromString(const std::string &s,
   ENCODING("VK16",            ENCODING_VVVV)
   ENCODING("VK32",            ENCODING_VVVV)
   ENCODING("VK64",            ENCODING_VVVV)
-  ENCODING("VK1PAIR",         ENCODING_VVVV)
-  ENCODING("VK2PAIR",         ENCODING_VVVV)
-  ENCODING("VK4PAIR",         ENCODING_VVVV)
-  ENCODING("VK8PAIR",         ENCODING_VVVV)
-  ENCODING("VK16PAIR",        ENCODING_VVVV)
   ENCODING("TILE",            ENCODING_VVVV)
   errs() << "Unhandled VEX.vvvv register encoding " << s << "\n";
   llvm_unreachable("Unhandled VEX.vvvv register encoding");