From 17fad045cccf34822d3163ada9e70a8f4528746e Mon Sep 17 00:00:00 2001
From: Jim Grosbach <grosbach@apple.com>
Date: Fri, 11 Mar 2011 01:33:54 +0000
Subject: [PATCH] Make the register enum value part of the CodeGenRegister
 struct.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127448 91177308-0d34-0410-b5e6-96231b3b80d8
---
 utils/TableGen/CodeGenRegisters.h      | 1 +
 utils/TableGen/CodeGenTarget.cpp       | 3 +++
 utils/TableGen/RegisterInfoEmitter.cpp | 5 ++++-
 3 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/utils/TableGen/CodeGenRegisters.h b/utils/TableGen/CodeGenRegisters.h
index 7f45b6ffe02..f6d6af8c972 100644
--- a/utils/TableGen/CodeGenRegisters.h
+++ b/utils/TableGen/CodeGenRegisters.h
@@ -30,6 +30,7 @@ namespace llvm {
     Record *TheDef;
     const std::string &getName() const;
     unsigned DeclaredSpillSize, DeclaredSpillAlignment;
+    unsigned EnumValue;
     CodeGenRegister(Record *R);
   };
 
diff --git a/utils/TableGen/CodeGenTarget.cpp b/utils/TableGen/CodeGenTarget.cpp
index 52df698f4d5..cc09c8d6833 100644
--- a/utils/TableGen/CodeGenTarget.cpp
+++ b/utils/TableGen/CodeGenTarget.cpp
@@ -164,6 +164,9 @@ void CodeGenTarget::ReadRegisters() const {
 
   Registers.reserve(Regs.size());
   Registers.assign(Regs.begin(), Regs.end());
+  // Assign the enumeration values.
+  for (unsigned i = 0, e = Registers.size(); i != e; ++i)
+    Registers[i].EnumValue = i + 1;
 }
 
 CodeGenRegister::CodeGenRegister(Record *R) : TheDef(R) {
diff --git a/utils/TableGen/RegisterInfoEmitter.cpp b/utils/TableGen/RegisterInfoEmitter.cpp
index 7857c5b411b..b3a9dea3bec 100644
--- a/utils/TableGen/RegisterInfoEmitter.cpp
+++ b/utils/TableGen/RegisterInfoEmitter.cpp
@@ -38,7 +38,10 @@ void RegisterInfoEmitter::runEnums(raw_ostream &OS) {
   OS << "enum {\n  NoRegister,\n";
 
   for (unsigned i = 0, e = Registers.size(); i != e; ++i)
-    OS << "  " << Registers[i].getName() << ", \t// " << i+1 << "\n";
+    OS << "  " << Registers[i].getName() << " = " <<
+      Registers[i].EnumValue << ",\n";
+  assert(Registers.size() == Registers[Registers.size()-1].EnumValue &&
+         "Register enum value mismatch!");
   OS << "  NUM_TARGET_REGS \t// " << Registers.size()+1 << "\n";
   OS << "};\n";
   if (!Namespace.empty())