Subzero: Use a common RelocOffsetType / RelocOffsetT.

There is one in IceDefs.h and one in IceGlobalInits.h. Can we just use one?

BUG=none (mini cleanup)
R=kschimpf@google.com, stichnot@chromium.org

Review URL: https://codereview.chromium.org/695563006

src/IceConverter.cpp

diff --git a/src/IceConverter.cpp b/src/IceConverter.cpp
index bd6841c..3c46496 100644
--- a/src/IceConverter.cpp
+++ b/src/IceConverter.cpp
@@ -659,7 +659,7 @@
   void addGlobalInitializer(Ice::VariableDeclaration &Global,
                             const Constant *Initializer) {
     const bool HasOffset = false;
-    const Ice::VariableDeclaration::RelocOffsetType Offset = 0;
+    const Ice::RelocOffsetT Offset = 0;
     addGlobalInitializer(Global, Initializer, HasOffset, Offset);
   }
 
@@ -669,12 +669,11 @@
   // relocation.
   void addGlobalInitializer(Ice::VariableDeclaration &Global,
                             const Constant *Initializer, bool HasOffset,
-                            Ice::VariableDeclaration::RelocOffsetType Offset);
+                            Ice::RelocOffsetT Offset);
 
   // Converts the given constant C to the corresponding integer
   // literal it contains.
-  Ice::VariableDeclaration::RelocOffsetType
-  getIntegerLiteralConstant(const Value *C) {
+  Ice::RelocOffsetT getIntegerLiteralConstant(const Value *C) {
     const auto CI = dyn_cast<ConstantInt>(C);
     if (CI && CI->getType()->isIntegerTy(32))
       return CI->getSExtValue();
@@ -735,7 +734,7 @@
 
 void LLVM2ICEGlobalsConverter::addGlobalInitializer(
     Ice::VariableDeclaration &Global, const Constant *Initializer,
-    bool HasOffset, Ice::VariableDeclaration::RelocOffsetType Offset) {
+    bool HasOffset, Ice::RelocOffsetT Offset) {
   (void)HasOffset;
   assert(HasOffset || Offset == 0);
 

src/IceDefs.h

diff --git a/src/IceDefs.h b/src/IceDefs.h
index 0beb3a3..2f0547e 100644
--- a/src/IceDefs.h
+++ b/src/IceDefs.h
@@ -85,6 +85,7 @@
 
 // PNaCl is ILP32, so theoretically we should only need 32-bit offsets.
 typedef int32_t RelocOffsetT;
+enum { RelocAddrSize = 4 };
 
 enum LivenessMode {
   // Basic version of live-range-end calculation.  Marks the last uses

src/IceGlobalInits.h

diff --git a/src/IceGlobalInits.h b/src/IceGlobalInits.h
index b4c6299..d5974b4 100644
--- a/src/IceGlobalInits.h
+++ b/src/IceGlobalInits.h
@@ -216,22 +216,17 @@
     SizeT Size;
   };
 
-  // Relocation address offsets must be 32 bit values.
-  typedef int32_t RelocOffsetType;
-  static const SizeT RelocAddrSize = 4;
-
   /// Defines the relocation value of another global declaration.
   class RelocInitializer : public Initializer {
     RelocInitializer(const RelocInitializer &) = delete;
     RelocInitializer &operator=(const RelocInitializer &) = delete;
 
   public:
-    RelocInitializer(const GlobalDeclaration *Declaration,
-                     RelocOffsetType Offset)
+    RelocInitializer(const GlobalDeclaration *Declaration, RelocOffsetT Offset)
         : Initializer(RelocInitializerKind), Declaration(Declaration),
           Offset(Offset) {}
     ~RelocInitializer() override {}
-    RelocOffsetType getOffset() const { return Offset; }
+    RelocOffsetT getOffset() const { return Offset; }
     const GlobalDeclaration *getDeclaration() const { return Declaration; }
     SizeT getNumBytes() const final { return RelocAddrSize; }
     void dump(GlobalContext *Ctx, Ostream &Stream) const final;
@@ -244,7 +239,7 @@
     // The global declaration used in the relocation.
     const GlobalDeclaration *Declaration;
     // The offset to add to the relocation.
-    const RelocOffsetType Offset;
+    const RelocOffsetT Offset;
   };
 
   /// Models the list of initializers.

src/IceTargetLoweringX8632.cpp

diff --git a/src/IceTargetLoweringX8632.cpp b/src/IceTargetLoweringX8632.cpp
index 999556e..dc9a0e5 100644
--- a/src/IceTargetLoweringX8632.cpp
+++ b/src/IceTargetLoweringX8632.cpp
@@ -4702,7 +4702,7 @@
             llvm::cast<VariableDeclaration::RelocInitializer>(Init);
         Str << "\t.long\t";
         Str << Reloc->getDeclaration()->mangleName(Ctx);
-        if (VariableDeclaration::RelocOffsetType Offset = Reloc->getOffset()) {
+        if (RelocOffsetT Offset = Reloc->getOffset()) {
           if (Offset >= 0 || (Offset == INT32_MIN))
             Str << " + " << Offset;
           else