Revert "[IR] Add new Range attribute using new ConstantRange Attribute type" (#84549)

Reverts llvm/llvm-project#83171

broke sanitizer buildbot
https://lab.llvm.org/buildbot/#/builders/168/builds/19110/steps/10/logs/stdio

1 files changed, 0 insertions, 41 deletions

diff --git a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
index 9c63116..832907a 100644
--- a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
+++ b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
@@ -815,30 +815,6 @@ private:
     return getFnValueByID(ValNo, Ty, TyID, ConstExprInsertBB);
   }
 
-  Expected<ConstantRange> readConstantRange(ArrayRef<uint64_t> Record,
-                                            unsigned &OpNum) {
-    if (Record.size() - OpNum < 3)
-      return error("Too few records for range");
-    unsigned BitWidth = Record[OpNum++];
-    if (BitWidth > 64) {
-      unsigned LowerActiveWords = Record[OpNum];
-      unsigned UpperActiveWords = Record[OpNum++] >> 32;
-      if (Record.size() - OpNum < LowerActiveWords + UpperActiveWords)
-        return error("Too few records for range");
-      APInt Lower =
-          readWideAPInt(ArrayRef(&Record[OpNum], LowerActiveWords), BitWidth);
-      OpNum += LowerActiveWords;
-      APInt Upper =
-          readWideAPInt(ArrayRef(&Record[OpNum], UpperActiveWords), BitWidth);
-      OpNum += UpperActiveWords;
-      return ConstantRange(Lower, Upper);
-    } else {
-      int64_t Start = BitcodeReader::decodeSignRotatedValue(Record[OpNum++]);
-      int64_t End = BitcodeReader::decodeSignRotatedValue(Record[OpNum++]);
-      return ConstantRange(APInt(BitWidth, Start), APInt(BitWidth, End));
-    }
-  }
-
   /// Upgrades old-style typeless byval/sret/inalloca attributes by adding the
   /// corresponding argument's pointee type. Also upgrades intrinsics that now
   /// require an elementtype attribute.
@@ -2127,8 +2103,6 @@ static Attribute::AttrKind getAttrFromCode(uint64_t Code) {
     return Attribute::CoroDestroyOnlyWhenComplete;
   case bitc::ATTR_KIND_DEAD_ON_UNWIND:
     return Attribute::DeadOnUnwind;
-  case bitc::ATTR_KIND_RANGE:
-    return Attribute::Range;
   }
 }
 
@@ -2298,21 +2272,6 @@ Error BitcodeReader::parseAttributeGroupBlock() {
             return error("Not a type attribute");
 
           B.addTypeAttr(Kind, HasType ? getTypeByID(Record[++i]) : nullptr);
-        } else if (Record[i] == 7) {
-          Attribute::AttrKind Kind;
-
-          i++;
-          if (Error Err = parseAttrKind(Record[i++], &Kind))
-            return Err;
-          if (!Attribute::isConstantRangeAttrKind(Kind))
-            return error("Not a ConstantRange attribute");
-
-          Expected<ConstantRange> MaybeCR = readConstantRange(Record, i);
-          if (!MaybeCR)
-            return MaybeCR.takeError();
-          i--;
-
-          B.addConstantRangeAttr(Kind, MaybeCR.get());
         } else {
           return error("Invalid attribute group entry");
         }