Subzero. Performance tweaks.

src/IceTargetLoweringX8664.cpp

 //===- subzero/src/IceTargetLoweringX8664.cpp - x86-64 lowering -----------===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
@@ skipping 85 matching lines @@
 #undef X
 };
 
 const size_t TargetX8664Traits::TableTypeX8664AttributesSize =
     llvm::array_lengthof(TableTypeX8664Attributes);
 
 const uint32_t TargetX8664Traits::X86_STACK_ALIGNMENT_BYTES = 16;
 const char *TargetX8664Traits::TargetName = "X8664";
 
 template <>
-std::array<llvm::SmallBitVector, RCX86_NUM>
+std::array<SmallBitVector, RCX86_NUM>
     TargetX86Base<X8664::Traits>::TypeToRegisterSet = {{}};
 
 template <>
-std::array<llvm::SmallBitVector, RCX86_NUM>
+std::array<SmallBitVector, RCX86_NUM>
     TargetX86Base<X8664::Traits>::TypeToRegisterSetUnfiltered = {{}};
 
 template <>
-std::array<llvm::SmallBitVector,
+std::array<SmallBitVector,
            TargetX86Base<X8664::Traits>::Traits::RegisterSet::Reg_NUM>
     TargetX86Base<X8664::Traits>::RegisterAliases = {{}};
 
 template <>
 FixupKind TargetX86Base<X8664::Traits>::PcRelFixup =
     TargetX86Base<X8664::Traits>::Traits::FK_PcRel;
 
 template <>
 FixupKind TargetX86Base<X8664::Traits>::AbsFixup =
     TargetX86Base<X8664::Traits>::Traits::FK_Abs;
@@ skipping 494 matching lines @@
     //
     // ReturnReloc has an offset that is only known during binary emission.
     // Therefore, we set a custom emit string for ReturnReloc that will be
     // used instead. In this particular case, the code will be emitted as
     //
     //  push .after_call
     InstX86Label *ReturnAddress = InstX86Label::create(Func, this);
     auto *ReturnRelocOffset = RelocOffset::create(Ctx);
     ReturnAddress->setRelocOffset(ReturnRelocOffset);
     constexpr bool SuppressMangling = true;
+    constexpr RelocOffsetT NoFixedOffset = 0;
     const IceString EmitString = ReturnAddress->getName(Func);
-    auto *ReturnReloc = llvm::cast<ConstantRelocatable>(Ctx->getConstantSym(
-        {ReturnRelocOffset}, Ctx->mangleName(Func->getFunctionName()),
-        EmitString, SuppressMangling));
+    auto *ReturnReloc = llvm::cast<ConstantRelocatable>(
+        Ctx->getConstantSym(NoFixedOffset, {ReturnRelocOffset},
+                            Ctx->mangleName(Func->getFunctionName()),
+                            EmitString, SuppressMangling));
     /* AutoBundle scoping */ {
       std::unique_ptr<AutoBundle> Bundler;
       if (CallTargetR == nullptr) {
         Bundler = makeUnique<AutoBundle>(this, InstBundleLock::Opt_PadToEnd);
         _push(ReturnReloc);
       } else {
         Variable *T = makeReg(IceType_i32);
         Variable *T64 = makeReg(IceType_i64);
         Variable *r15 =
             getPhysicalRegister(Traits::RegisterSet::Reg_r15, IceType_i64);
@@ skipping 162 matching lines @@
 #define X(tag, sizeLog2, align, elts, elty, str, rcstr)                        \
   static_assert(_table1_##tag == _table2_##tag,                                \
                 "Inconsistency between ICETYPEX8664_TABLE and ICETYPE_TABLE");
 ICETYPE_TABLE
 #undef X
 } // end of namespace dummy3
 } // end of anonymous namespace
 
 } // end of namespace X8664
 } // end of namespace Ice