Add constant blinding/pooling option for X8632 code translation

src/IceGlobalContext.cpp

Index: src/IceGlobalContext.cpp
diff --git a/src/IceGlobalContext.cpp b/src/IceGlobalContext.cpp
index 8ed4d76836553125eed5f746a11baf0db522dc2a..d42191bc224a79c1a6e0d48bc38be3ddfa3e3518 100644
--- a/src/IceGlobalContext.cpp
+++ b/src/IceGlobalContext.cpp
@@ -222,7 +222,7 @@ GlobalContext::GlobalContext(Ostream *OsDump, Ostream *OsEmit, Ostream *OsError,
       OptQ(/*Sequential=*/Flags.isSequential(),
            /*MaxSize=*/Flags.getNumTranslationThreads()),
       // EmitQ is allowed unlimited size.
-      EmitQ(/*Sequential=*/Flags.isSequential()) {
+      EmitQ(/*Sequential=*/Flags.isSequential()), RandomizationCookie(0) {
   assert(OsDump && "OsDump is not defined for GlobalContext");
   assert(OsEmit && "OsEmit is not defined for GlobalContext");
   assert(OsError && "OsError is not defined for GlobalContext");
@@ -767,7 +767,9 @@ ConstantList GlobalContext::getConstantPool(Type Ty) {
   switch (Ty) {
   case IceType_i1:
   case IceType_i8:
+    return getConstPool()->Integers8.getConstantPool();
   case IceType_i16:
+    return getConstPool()->Integers16.getConstantPool();
   case IceType_i32:
     return getConstPool()->Integers32.getConstantPool();
   case IceType_i64: