Lower icmp operations between vector values.

src/IceInst.cpp

Index: src/IceInst.cpp
diff --git a/src/IceInst.cpp b/src/IceInst.cpp
index 004b5550baab037ed52cfab41cad584766990a34..1b2a52d76dfb9097be252428ac42f588b2410fbb 100644
--- a/src/IceInst.cpp
+++ b/src/IceInst.cpp
@@ -63,9 +63,10 @@ const size_t InstFcmpAttributesSize = llvm::array_lengthof(InstFcmpAttributes);
 // Using non-anonymous struct so that array_lengthof works.
 const struct InstIcmpAttributes_ {
   const char *DisplayString;
+  bool IsUnsigned;
 } InstIcmpAttributes[] = {
-#define X(tag, str)                                                            \
-  { str }                                                                      \
+#define X(tag, str, isunsigned)                                                \
+  { str, isunsigned }                                                          \
   ,
     ICEINSTICMP_TABLE
 #undef X
@@ -281,6 +282,10 @@ InstFcmp::InstFcmp(Cfg *Func, FCond Condition, Variable *Dest, Operand *Source1,
   addSource(Source2);
 }
 
+bool InstIcmp::isUnsigned() const {
+  return InstIcmpAttributes[getCondition()].IsUnsigned;
+}
+
 InstIcmp::InstIcmp(Cfg *Func, ICond Condition, Variable *Dest, Operand *Source1,
                    Operand *Source2)
     : Inst(Func, Inst::Icmp, 2, Dest), Condition(Condition) {