[llvm] [CodeGen] Add nneg and disjoint flags (PR #86650)

[Matt Arsenault via llvm-commits]

Thorsten =?utf-8?q?Schütt?= <schuett at gmail.com>
Message-ID:
In-Reply-To: <llvm.org/llvm/llvm-project/pull/86650 at github.com>


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@@ -555,6 +555,16 @@ uint32_t MachineInstr::copyFlagsFromInstruction(const Instruction &I) {
       MIFlags |= MachineInstr::MIFlag::NoUWrap;
   }
 
+  // Copy the nonneg flag.
+  if (const PossiblyNonNegInst *PNI = dyn_cast<PossiblyNonNegInst>(&I))
+    if (PNI->hasNonNeg())
+      MIFlags |= MachineInstr::MIFlag::NonNeg;
+
+  // Copy the disjoint flag.
+  if (const PossiblyDisjointInst *PD = dyn_cast<PossiblyDisjointInst>(&I))
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arsenm wrote:

else if? these are mutually exclusive? 

https://github.com/llvm/llvm-project/pull/86650