Order jump tables for deterministic or randomized emission.

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 222 matching lines @@
   // On X8664 ILP32 pointers are 32-bit hence the use of .long
   for (SizeT I = 0; I < JumpTable->getNumTargets(); ++I)
     Str << "\n\t.long\t" << JumpTable->getTarget(I)->getAsmName();
   Str << "\n";
 }
 
 void TargetDataX8664::lowerJumpTables() {
   switch (Ctx->getFlags().getOutFileType()) {
   case FT_Elf: {
     ELFObjectWriter *Writer = Ctx->getObjectWriter();
-    for (const JumpTableData &JumpTable : *Ctx->getJumpTables())
+    for (const JumpTableData &JT : Ctx->getJumpTables())
       // TODO(jpp): not 386.
-      Writer->writeJumpTable(JumpTable, llvm::ELF::R_386_32);
+      Writer->writeJumpTable(JT, llvm::ELF::R_386_32);
   } break;
   case FT_Asm:
     // Already emitted from Cfg
     break;
   case FT_Iasm: {
     if (!BuildDefs::dump())
       return;
     Ostream &Str = Ctx->getStrEmit();
-    for (const JumpTableData &JT : *Ctx->getJumpTables()) {
+    for (const JumpTableData &JT : Ctx->getJumpTables()) {
       Str << "\t.section\t.rodata." << JT.getFunctionName()
           << "$jumptable,\"a\",@progbits\n";
       Str << "\t.align\t" << typeWidthInBytes(getPointerType()) << "\n";
       Str << InstJumpTable::makeName(JT.getFunctionName(), JT.getId()) << ":";
 
       // On X8664 ILP32 pointers are 32-bit hence the use of .long
       for (intptr_t TargetOffset : JT.getTargetOffsets())
         Str << "\n\t.long\t" << JT.getFunctionName() << "+" << TargetOffset;
       Str << "\n";
     }
@@ skipping 124 matching lines @@
 // entries in case the high-level table has extra entries.
 #define X(tag, sizeLog2, align, elts, elty, str)                               \
   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 Ice