Subzero. X86. Lowers shufflevector using xmm instructions.

src/IceTargetLoweringX86Base.h

 //===- subzero/src/IceTargetLoweringX86Base.h - x86 lowering ----*- C++ -*-===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
@@ skipping 783 matching lines @@
     AutoMemorySandboxer<> _(this, &Dest, &Src0);
     Context.insert<typename Traits::Insts::Pmuludq>(Dest, Src0);
   }
   void _pop(Variable *Dest) {
     Context.insert<typename Traits::Insts::Pop>(Dest);
   }
   void _por(Variable *Dest, Operand *Src0) {
     AutoMemorySandboxer<> _(this, &Dest, &Src0);
     Context.insert<typename Traits::Insts::Por>(Dest, Src0);
   }
+  void _punpckl(Variable *Dest, Operand *Src0) {
+    AutoMemorySandboxer<> _(this, &Dest, &Src0);
+    Context.insert<typename Traits::Insts::Punpckl>(Dest, Src0);
+  }
   void _pshufd(Variable *Dest, Operand *Src0, Operand *Src1) {
     AutoMemorySandboxer<> _(this, &Dest, &Src0, &Src1);
     Context.insert<typename Traits::Insts::Pshufd>(Dest, Src0, Src1);
   }
   void _psll(Variable *Dest, Operand *Src0) {
     AutoMemorySandboxer<> _(this, &Dest, &Src0);
     Context.insert<typename Traits::Insts::Psll>(Dest, Src0);
   }
   void _psra(Variable *Dest, Operand *Src0) {
     AutoMemorySandboxer<> _(this, &Dest, &Src0);
@@ skipping 261 matching lines @@
     llvm::report_fatal_error(
         "Hey, yo! This is x86-64. Watcha doin'? (lowerIcmp64)");
   }
   /// x86lowerIcmp64 handles 64-bit icmp lowering.
   template <typename T = Traits>
   typename std::enable_if<!T::Is64Bit, void>::type
   lowerIcmp64(const InstIcmp *Icmp, const Inst *Consumer);
 
   BoolFolding<Traits> FoldingInfo;
 
+  /// Helpers for lowering ShuffleVector
+  /// @{
+  Variable *lowerShuffleVector_AllFromSameSrc(Variable *Src, SizeT Index0,
+                                              SizeT Index1, SizeT Index2,
+                                              SizeT Index3);
+  static constexpr SizeT IGNORE_INDEX = 0x80000000u;
+  Variable *lowerShuffleVector_TwoFromSameSrc(Variable *Src0, SizeT Index0,
+                                              SizeT Index1, Variable *Src1,
+                                              SizeT Index2, SizeT Index3);
+  static constexpr SizeT UNIFIED_INDEX_0 = 0;
+  static constexpr SizeT UNIFIED_INDEX_1 = 2;
+  Variable *lowerShuffleVector_UnifyFromDifferentSrcs(Variable *Src0,
+                                                      SizeT Index0,
+                                                      Variable *Src1,
+                                                      SizeT Index1);
+  /// @}
+
   static FixupKind PcRelFixup;
   static FixupKind AbsFixup;
 };
 
 template <typename TraitsType>
 class TargetDataX86 final : public TargetDataLowering {
   using Traits = TraitsType;
   TargetDataX86() = delete;
   TargetDataX86(const TargetDataX86 &) = delete;
   TargetDataX86 &operator=(const TargetDataX86 &) = delete;
@@ skipping 34 matching lines @@
 
   explicit TargetHeaderX86(GlobalContext *Ctx) : TargetHeaderLowering(Ctx) {}
 };
 
 } // end of namespace X86NAMESPACE
 } // end of namespace Ice
 
 #include "IceTargetLoweringX86BaseImpl.h"
 
 #endif // SUBZERO_SRC_ICETARGETLOWERINGX86BASE_H