Create clearFlags()

Author: dc03-work

llvm/include/llvm/CodeGen/GlobalISel/GenericMachineInstrs.h

@@ -41,13 +41,8 @@ class GenericMachineInstr : public MachineInstr {
   }
 
   void dropPoisonGeneratingFlags() {
-    clearFlag(NoUWrap);
-    clearFlag(NoSWrap);
-    clearFlag(IsExact);
-    clearFlag(Disjoint);
-    clearFlag(NonNeg);
-    clearFlag(FmNoNans);
-    clearFlag(FmNoInfs);
+    clearFlags(NoUWrap | NoSWrap | IsExact | Disjoint | NonNeg | FmNoNans |
+               FmNoInfs);
     assert(!hasPoisonGeneratingFlags());
   }
 };

llvm/include/llvm/CodeGen/MachineInstr.h

@@ -416,6 +416,12 @@ class MachineInstr
     Flags &= ~((uint32_t)Flag);
   }
 
+  void clearFlags(unsigned flags) {
+    assert(isUInt<LLVM_MI_FLAGS_BITS>(flags) &&
+           "flags to be cleared are out of range for the Flags field");
+    Flags &= ~flags;
+  }
+
   /// Return true if MI is in a bundle (but not the first MI in a bundle).
   ///
   /// A bundle looks like this before it's finalized: