[llvm] [InstSimplify] Avoid use of ConstantExpr::getICmp. NFC (PR #67873)

[Craig Topper via llvm-commits]

================
@@ -3916,12 +3916,12 @@ static Value *simplifyICmpInst(unsigned Predicate, Value *LHS, Value *RHS,
           // is non-negative then LHS <s RHS.
           case ICmpInst::ICMP_SGT:
           case ICmpInst::ICMP_SGE:
-            return ConstantExpr::getICmp(ICmpInst::ICMP_SLT, C,
-                                         Constant::getNullValue(C->getType()));
+            return ConstantFoldCompareInstruction(
----------------
topperc wrote:

Does that matter here? `C` came from m_ImmConstant and we're comparing it to null.

https://github.com/llvm/llvm-project/pull/67873